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/wp-includes/ -> general-template.php (source)

   1  <?php
   2  /**
   3   * General template tags that can go anywhere in a template.
   4   *
   5   * @package WordPress
   6   * @subpackage Template
   7   */
   8  
   9  /**
  10   * Loads header template.
  11   *
  12   * Includes the header template for a theme or if a name is specified then a
  13   * specialized header will be included.
  14   *
  15   * For the parameter, if the file is called "header-special.php" then specify
  16   * "special".
  17   *
  18   * @since 1.5.0
  19   * @since 5.5.0 A return value was added.
  20   * @since 5.5.0 The `$args` parameter was added.
  21   *
  22   * @param string|null $name The name of the specialized header. Default null.
  23   * @param array       $args Optional. Additional arguments passed to the header template.
  24   *                          Default empty array.
  25   * @return void|false Void on success, false if the template does not exist.
  26   */
  27  function get_header( $name = null, $args = array() ) {
  28      /**
  29       * Fires before the header template file is loaded.
  30       *
  31       * @since 2.1.0
  32       * @since 2.8.0 The `$name` parameter was added.
  33       * @since 5.5.0 The `$args` parameter was added.
  34       *
  35       * @param string|null $name Name of the specific header file to use. Null for the default header.
  36       * @param array       $args Additional arguments passed to the header template.
  37       */
  38      do_action( 'get_header', $name, $args );
  39  
  40      $templates = array();
  41      $name      = (string) $name;
  42      if ( '' !== $name ) {
  43          $templates[] = "header-{$name}.php";
  44      }
  45  
  46      $templates[] = 'header.php';
  47  
  48      if ( ! locate_template( $templates, true, true, $args ) ) {
  49          return false;
  50      }
  51  }
  52  
  53  /**
  54   * Loads footer template.
  55   *
  56   * Includes the footer template for a theme or if a name is specified then a
  57   * specialized footer will be included.
  58   *
  59   * For the parameter, if the file is called "footer-special.php" then specify
  60   * "special".
  61   *
  62   * @since 1.5.0
  63   * @since 5.5.0 A return value was added.
  64   * @since 5.5.0 The `$args` parameter was added.
  65   *
  66   * @param string|null $name The name of the specialized footer. Default null.
  67   * @param array       $args Optional. Additional arguments passed to the footer template.
  68   *                          Default empty array.
  69   * @return void|false Void on success, false if the template does not exist.
  70   */
  71  function get_footer( $name = null, $args = array() ) {
  72      /**
  73       * Fires before the footer template file is loaded.
  74       *
  75       * @since 2.1.0
  76       * @since 2.8.0 The `$name` parameter was added.
  77       * @since 5.5.0 The `$args` parameter was added.
  78       *
  79       * @param string|null $name Name of the specific footer file to use. Null for the default footer.
  80       * @param array       $args Additional arguments passed to the footer template.
  81       */
  82      do_action( 'get_footer', $name, $args );
  83  
  84      $templates = array();
  85      $name      = (string) $name;
  86      if ( '' !== $name ) {
  87          $templates[] = "footer-{$name}.php";
  88      }
  89  
  90      $templates[] = 'footer.php';
  91  
  92      if ( ! locate_template( $templates, true, true, $args ) ) {
  93          return false;
  94      }
  95  }
  96  
  97  /**
  98   * Loads sidebar template.
  99   *
 100   * Includes the sidebar template for a theme or if a name is specified then a
 101   * specialized sidebar will be included.
 102   *
 103   * For the parameter, if the file is called "sidebar-special.php" then specify
 104   * "special".
 105   *
 106   * @since 1.5.0
 107   * @since 5.5.0 A return value was added.
 108   * @since 5.5.0 The `$args` parameter was added.
 109   *
 110   * @param string|null $name The name of the specialized sidebar. Default null.
 111   * @param array       $args Optional. Additional arguments passed to the sidebar template.
 112   *                          Default empty array.
 113   * @return void|false Void on success, false if the template does not exist.
 114   */
 115  function get_sidebar( $name = null, $args = array() ) {
 116      /**
 117       * Fires before the sidebar template file is loaded.
 118       *
 119       * @since 2.2.0
 120       * @since 2.8.0 The `$name` parameter was added.
 121       * @since 5.5.0 The `$args` parameter was added.
 122       *
 123       * @param string|null $name Name of the specific sidebar file to use. Null for the default sidebar.
 124       * @param array       $args Additional arguments passed to the sidebar template.
 125       */
 126      do_action( 'get_sidebar', $name, $args );
 127  
 128      $templates = array();
 129      $name      = (string) $name;
 130      if ( '' !== $name ) {
 131          $templates[] = "sidebar-{$name}.php";
 132      }
 133  
 134      $templates[] = 'sidebar.php';
 135  
 136      if ( ! locate_template( $templates, true, true, $args ) ) {
 137          return false;
 138      }
 139  }
 140  
 141  /**
 142   * Loads a template part into a template.
 143   *
 144   * Provides a simple mechanism for child themes to overload reusable sections of code
 145   * in the theme.
 146   *
 147   * Includes the named template part for a theme or if a name is specified then a
 148   * specialized part will be included. If the theme contains no {slug}.php file
 149   * then no template will be included.
 150   *
 151   * The template is included using require, not require_once, so you may include the
 152   * same template part multiple times.
 153   *
 154   * For the $name parameter, if the file is called "{slug}-special.php" then specify
 155   * "special".
 156   *
 157   * @since 3.0.0
 158   * @since 5.5.0 A return value was added.
 159   * @since 5.5.0 The `$args` parameter was added.
 160   *
 161   * @param string      $slug The slug name for the generic template.
 162   * @param string|null $name Optional. The name of the specialized template. Default null.
 163   * @param array       $args Optional. Additional arguments passed to the template.
 164   *                          Default empty array.
 165   * @return void|false Void on success, false if the template does not exist.
 166   */
 167  function get_template_part( $slug, $name = null, $args = array() ) {
 168      /**
 169       * Fires before the specified template part file is loaded.
 170       *
 171       * The dynamic portion of the hook name, `$slug`, refers to the slug name
 172       * for the generic template part.
 173       *
 174       * @since 3.0.0
 175       * @since 5.5.0 The `$args` parameter was added.
 176       *
 177       * @param string      $slug The slug name for the generic template.
 178       * @param string|null $name The name of the specialized template
 179       *                          or null if there is none.
 180       * @param array       $args Additional arguments passed to the template.
 181       */
 182      do_action( "get_template_part_{$slug}", $slug, $name, $args );
 183  
 184      $templates = array();
 185      $name      = (string) $name;
 186      if ( '' !== $name ) {
 187          $templates[] = "{$slug}-{$name}.php";
 188      }
 189  
 190      $templates[] = "{$slug}.php";
 191  
 192      /**
 193       * Fires before an attempt is made to locate and load a template part.
 194       *
 195       * @since 5.2.0
 196       * @since 5.5.0 The `$args` parameter was added.
 197       *
 198       * @param string   $slug      The slug name for the generic template.
 199       * @param string   $name      The name of the specialized template
 200       *                            or an empty string if there is none.
 201       * @param string[] $templates Array of template files to search for, in order.
 202       * @param array    $args      Additional arguments passed to the template.
 203       */
 204      do_action( 'get_template_part', $slug, $name, $templates, $args );
 205  
 206      if ( ! locate_template( $templates, true, false, $args ) ) {
 207          return false;
 208      }
 209  }
 210  
 211  /**
 212   * Displays search form.
 213   *
 214   * Will first attempt to locate the searchform.php file in either the child or
 215   * the parent, then load it. If it doesn't exist, then the default search form
 216   * will be displayed. The default search form is HTML, which will be displayed.
 217   * There is a filter applied to the search form HTML in order to edit or replace
 218   * it. The filter is {@see 'get_search_form'}.
 219   *
 220   * This function is primarily used by themes which want to hardcode the search
 221   * form into the sidebar and also by the search widget in WordPress.
 222   *
 223   * There is also an action that is called whenever the function is run called,
 224   * {@see 'pre_get_search_form'}. This can be useful for outputting JavaScript that the
 225   * search relies on or various formatting that applies to the beginning of the
 226   * search. To give a few examples of what it can be used for.
 227   *
 228   * @since 2.7.0
 229   * @since 5.2.0 The `$args` array parameter was added in place of an `$echo` boolean flag.
 230   *
 231   * @param array $args {
 232   *     Optional. Array of display arguments.
 233   *
 234   *     @type bool   $echo       Whether to echo or return the form. Default true.
 235   *     @type string $aria_label ARIA label for the search form. Useful to distinguish
 236   *                              multiple search forms on the same page and improve
 237   *                              accessibility. Default empty.
 238   * }
 239   * @return string|void Search form HTML if 'echo' is false, nothing otherwise.
 240   * @phpstan-param array<string, mixed>|bool $args
 241   * @phpstan-return (
 242   *     $args is array{ echo: false|0|''|'0', ... }
 243   *         ? string
 244   *         : ( $args is false|0|''|'0' ? string : void )
 245   * )
 246   */
 247  function get_search_form( $args = array() ) {
 248      /**
 249       * Fires before the search form is retrieved, at the start of get_search_form().
 250       *
 251       * @since 2.7.0 as 'get_search_form' action.
 252       * @since 3.6.0
 253       * @since 5.5.0 The `$args` parameter was added.
 254       *
 255       * @link https://core.trac.wordpress.org/ticket/19321
 256       *
 257       * @param array $args The array of arguments for building the search form.
 258       *                    See get_search_form() for information on accepted arguments.
 259       */
 260      do_action( 'pre_get_search_form', $args );
 261  
 262      $echo = true;
 263  
 264      if ( ! is_array( $args ) ) {
 265          /*
 266           * Back compat: to ensure previous uses of get_search_form() continue to
 267           * function as expected, we handle a value for the boolean $echo param removed
 268           * in 5.2.0. Then we deal with the $args array and cast its defaults.
 269           */
 270          $echo = (bool) $args;
 271  
 272          // Set an empty array and allow default arguments to take over.
 273          $args = array();
 274      }
 275  
 276      // Defaults are to echo and to output no custom label on the form.
 277      $defaults = array(
 278          'echo'       => $echo,
 279          'aria_label' => '',
 280      );
 281  
 282      $args = wp_parse_args( $args, $defaults );
 283  
 284      /**
 285       * Filters the array of arguments used when generating the search form.
 286       *
 287       * @since 5.2.0
 288       *
 289       * @param array $args The array of arguments for building the search form.
 290       *                    See get_search_form() for information on accepted arguments.
 291       */
 292      $args = apply_filters( 'search_form_args', $args );
 293  
 294      // Ensure that the filtered arguments contain all required default values.
 295      $args = array_merge( $defaults, $args );
 296  
 297      $format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';
 298  
 299      /**
 300       * Filters the HTML format of the search form.
 301       *
 302       * @since 3.6.0
 303       * @since 5.5.0 The `$args` parameter was added.
 304       *
 305       * @param string $format The type of markup to use in the search form.
 306       *                       Accepts 'html5', 'xhtml'.
 307       * @param array  $args   The array of arguments for building the search form.
 308       *                       See get_search_form() for information on accepted arguments.
 309       */
 310      $format = apply_filters( 'search_form_format', $format, $args );
 311  
 312      $search_form_template = locate_template( 'searchform.php' );
 313  
 314      if ( '' !== $search_form_template ) {
 315          ob_start();
 316          require $search_form_template;
 317          $form = ob_get_clean();
 318      } else {
 319          // Build a string containing an aria-label to use for the search form.
 320          if ( $args['aria_label'] ) {
 321              $aria_label = 'aria-label="' . esc_attr( $args['aria_label'] ) . '" ';
 322          } else {
 323              /*
 324               * If there's no custom aria-label, we can set a default here. At the
 325               * moment it's empty as there's uncertainty about what the default should be.
 326               */
 327              $aria_label = '';
 328          }
 329  
 330          if ( 'html5' === $format ) {
 331              $form = '<form role="search" ' . $aria_label . 'method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
 332                  <label>
 333                      <span class="screen-reader-text">' .
 334                      /* translators: Hidden accessibility text. */
 335                      _x( 'Search for:', 'label' ) .
 336                      '</span>
 337                      <input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" />
 338                  </label>
 339                  <input type="submit" class="search-submit" value="' . esc_attr_x( 'Search', 'submit button' ) . '" />
 340              </form>';
 341          } else {
 342              $form = '<form role="search" ' . $aria_label . 'method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
 343                  <div>
 344                      <label class="screen-reader-text" for="s">' .
 345                      /* translators: Hidden accessibility text. */
 346                      _x( 'Search for:', 'label' ) .
 347                      '</label>
 348                      <input type="text" value="' . get_search_query() . '" name="s" id="s" />
 349                      <input type="submit" id="searchsubmit" value="' . esc_attr_x( 'Search', 'submit button' ) . '" />
 350                  </div>
 351              </form>';
 352          }
 353      }
 354  
 355      /**
 356       * Filters the HTML output of the search form.
 357       *
 358       * @since 2.7.0
 359       * @since 5.5.0 The `$args` parameter was added.
 360       *
 361       * @param string $form The search form HTML output.
 362       * @param array  $args The array of arguments for building the search form.
 363       *                     See get_search_form() for information on accepted arguments.
 364       */
 365      $result = apply_filters( 'get_search_form', $form, $args );
 366  
 367      if ( null === $result ) {
 368          $result = $form;
 369      }
 370  
 371      if ( $args['echo'] ) {
 372          echo $result;
 373      } else {
 374          return $result;
 375      }
 376  }
 377  
 378  
 379  /**
 380   * Retrieves the markup for an accessible tooltip.
 381   *
 382   * Returns a button with an accessible name popover hint.
 383   *
 384   * @since 7.1.0
 385   *
 386   * @param string $content Plain-text tooltip content. An empty value returns an empty string.
 387   * @param array  $args {
 388   *     Optional. Arguments for building the tooltip.
 389   *
 390   *     @type string $id          Unique ID for the popover element. Default is a
 391   *                               generated unique ID.
 392   *     @type string $button      Existing `button` or `a` markup. Used instead of generated button.
 393   *                               Default empty string.
 394   *     @type string $label       Not used for tooltips.
 395   *     @type string $close_label Not used for tooltips.
 396   *     @type string $icon        Dashicons icon class for the toggle button.
 397   *                               Default 'dashicons-editor-help'. Should match the control's
 398   *                               visible label.
 399   *     @type string $class       Additional class(es) for the wrapping element.
 400   *                               Default empty.
 401   * }
 402   * @return string Tooltip HTML markup, or an empty string when no content is provided.
 403   */
 404  function wp_get_tooltip( $content, $args = array() ) {
 405      $args['type'] = 'tooltip';
 406      return wp_get_tooltip_helper( $content, $args );
 407  }
 408  
 409  /**
 410   * Retrieves the markup for an accessible toggle tip.
 411   *
 412   * Returns a button and an action triggered toggle tip with `$content`.
 413   *
 414   * @since 7.1.0
 415   *
 416   * @param string $content Plain-text tooltip content. An empty value returns an empty string.
 417   * @param array  $args {
 418   *     Optional. Arguments for building the tooltip.
 419   *
 420   *     @type string $id          Unique ID for the popover element. Default is a
 421   *                               generated unique ID.
 422   *     @type string $button      Existing `button` markup. Used instead of generated button.
 423   *                               Default empty string.
 424   *     @type string $label       Accessible label for the toggle button.
 425   *                               Default 'Help', matching the default icon.
 426   *                               Ignored for tooltips.
 427   *     @type string $close_label Accessible label for the close button. Default 'Close'.
 428   *     @type string $icon        Dashicons icon class for the toggle button.
 429   *                               Default 'dashicons-editor-help'. Should match the control's
 430   *                               visible label.
 431   *     @type string $class       Additional class(es) for the wrapping element.
 432   *                               Default empty.
 433   * }
 434   * @return string Toggletip HTML markup, or an empty string when no content is provided.
 435   */
 436  function wp_get_toggletip( $content, $args = array() ) {
 437      $args['type'] = 'toggletip';
 438      return wp_get_tooltip_helper( $content, $args );
 439  }
 440  
 441  /**
 442   * Retrieves the markup for an accessible tooltip or toggletip.
 443   *
 444   * Returns a button and either a hover/focus triggered tooltip popover or an action
 445   * triggered toggle tip. Enqueue the `wp-tooltip` style and script where it is used.
 446   * Tooltips are used to show the accessible name of a control.
 447   * Toggletips are used for longer supporting text explaining context.
 448   *
 449   * @since 7.1.0
 450   *
 451   * @param string $content Plain-text tooltip content. An empty value returns an empty string.
 452   * @param array  $args {
 453   *     Optional. Arguments for building the tooltip.
 454   *
 455   *     @type string $id          Unique ID for the popover element. Default is a
 456   *                               generated unique ID.
 457   *     @type string $button      Existing `button` or `a` markup. Used instead of generated button.
 458   *                               Default empty string.
 459   *     @type string $label       Accessible label for the toggle button.
 460   *                               Default 'Help', matching the default icon.
 461   *                               Ignored for tooltips.
 462   *     @type string $close_label Accessible label for the close button. Default 'Close'.
 463   *     @type string $icon        Dashicons icon class for the toggle button.
 464   *                               Default 'dashicons-editor-help'. Should match the control's
 465   *                               visible label.
 466   *     @type string $class       Additional class(es) for the wrapping element.
 467   *                               Default empty.
 468   *     @type string $type        Type of tooltip: either `tooltip` or `toggletip`.
 469   *                               Default 'tooltip'.
 470   * }
 471   * @return string Tooltip HTML markup, or an empty string when no content is provided.
 472   */
 473  function wp_get_tooltip_helper( $content, $args = array() ) {
 474      $content = trim( (string) $content );
 475  
 476      if ( '' === $content ) {
 477          return '';
 478      }
 479  
 480      $defaults = array(
 481          'id'          => wp_unique_id( 'wp-tooltip-' ),
 482          'button'      => '',
 483          'label'       => __( 'Help' ),
 484          'close_label' => __( 'Close' ),
 485          'icon'        => 'dashicons-editor-help',
 486          'class'       => '',
 487          'type'        => 'tooltip',
 488      );
 489  
 490      $args = wp_parse_args( $args, $defaults );
 491  
 492      $classes = ( 'tooltip' === $args['type'] ) ? 'wp-tooltip wp-is-tooltip' : 'wp-tooltip wp-is-toggletip';
 493      if ( '' !== $args['class'] ) {
 494          $classes .= ' ' . $args['class'];
 495      }
 496  
 497      $icon = ( $args['icon'] ) ? trim( $args['icon'] ) : $defaults['icon'];
 498      $id   = ( $args['id'] ) ? $args['id'] : $defaults['id'];
 499  
 500      // Tooltips use the content as the accessible name; toggletips use the label.
 501      $label = ( 'tooltip' === $args['type'] ) ? wp_strip_all_tags( $content, true ) : $args['label'];
 502  
 503      /*
 504       * The generated button is a plain skeleton. Every dynamic attribute is
 505       * added through the tag processor below, so caller-supplied markup is
 506       * never scanned or substituted and a percent sign in custom markup,
 507       * such as a percent-encoded URL, is never treated as a conversion
 508       * specification.
 509       */
 510      $default_button = '<button type="button"><span></span></button>';
 511  
 512      $is_default = ! $args['button'];
 513      $button     = ( $args['button'] ) ? $args['button'] : $default_button;
 514  
 515      // The accepted root element is a `button`, or an `a` for tooltips.
 516      $tag       = false;
 517      $processor = new WP_HTML_Tag_Processor( $button );
 518      if ( true === $processor->next_tag( 'button' ) ) {
 519          $tag = 'button';
 520      } else {
 521          $processor = new WP_HTML_Tag_Processor( $button );
 522          if ( 'tooltip' === $args['type'] && true === $processor->next_tag( 'a' ) ) {
 523              $tag = 'a';
 524          }
 525      }
 526  
 527      if ( false === $tag ) {
 528          // Button HTML passed was not valid. Reset to default.
 529          $is_default = true;
 530          $button     = $default_button;
 531          $processor  = new WP_HTML_Tag_Processor( $button );
 532          $processor->next_tag( 'button' );
 533          $tag = 'button';
 534      }
 535  
 536      /*
 537       * Attributes that apply to every accepted button are added in one pass.
 538       * Attributes that name the control are only added when the caller's
 539       * markup did not already provide them.
 540       */
 541      if ( null === $processor->get_attribute( 'aria-label' ) ) {
 542          $processor->set_attribute( 'aria-label', $label );
 543      }
 544      $processor->add_class( 'wp-tooltip__toggle' );
 545      if ( 'button' === $tag && 'tooltip' !== $args['type'] ) {
 546          $processor->set_attribute( 'popovertarget', $id );
 547          $processor->set_attribute( 'aria-haspopup', 'dialog' );
 548      }
 549  
 550      // The generated button also carries the dashicon on its inner span.
 551      if ( $is_default && true === $processor->next_tag( 'span' ) ) {
 552          $processor->set_attribute( 'class', 'dashicons ' . $icon );
 553          $processor->set_attribute( 'aria-hidden', 'true' );
 554      }
 555  
 556      $button = $processor->get_updated_html();
 557  
 558      /*
 559       * The markup only uses phrasing content so it is valid when nested
 560       * in a phrasing context. Sectioning content (e.g. `div`, `dialog`) will
 561       * cause the parser to close an open `p`, creating an empty and breaking
 562       * the layout. See #65660.
 563       */
 564      if ( 'tooltip' === $args['type'] ) {
 565          $markup = sprintf(
 566              '<span class="%1$s">
 567                  %6$s
 568                  <span popover="hint" id="%2$s" class="wp-tooltip__bubble" role="tooltip">' .
 569                      '<span id="%2$s-text" class="wp-tooltip__text">%5$s</span>' .
 570                  '</span>' .
 571              '</span>',
 572              esc_attr( $classes ),
 573              esc_attr( $id ),
 574              esc_attr( $label ),
 575              esc_attr( $icon ),
 576              esc_html( $content ),
 577              $button,
 578          );
 579      } else {
 580          /*
 581           * A `span` with `role="dialog"` is used instead of a `dialog` element to keep the
 582           * markup as phrasing content. The `aria-label`, `tabindex`, and `autofocus`
 583           * attributes reproduce the accessible name and focus handling of the native element.
 584           */
 585          $markup = sprintf(
 586              '<span class="%1$s">
 587                  %7$s
 588                  <span popover="auto" id="%2$s" class="wp-tooltip__bubble" role="dialog" aria-label="%3$s" tabindex="-1" autofocus>' .
 589                      '<span id="%2$s-text" class="wp-tooltip__text">%5$s</span>' .
 590                      '<button type="button" class="wp-tooltip__close" popovertarget="%2$s" popovertargetaction="hide" aria-label="%6$s">' .
 591                          '<span class="dashicons dashicons-no-alt" aria-hidden="true"></span>' .
 592                      '</button>' .
 593                  '</span>' .
 594              '</span>',
 595              esc_attr( $classes ),
 596              esc_attr( $id ),
 597              esc_attr( $label ),
 598              esc_attr( $icon ),
 599              esc_html( $content ),
 600              esc_attr( $args['close_label'] ),
 601              $button,
 602          );
 603      }
 604  
 605      return $markup;
 606  }
 607  
 608  /**
 609   * Displays the Log In/Out link.
 610   *
 611   * Displays a link, which allows users to navigate to the Log In page to log in
 612   * or log out depending on whether they are currently logged in.
 613   *
 614   * @since 1.5.0
 615   *
 616   * @param string $redirect Optional path to redirect to on login/logout.
 617   * @param bool   $display  Default to echo and not return the link.
 618   * @return string|void Log in/out link if `$display` is false, nothing otherwise.
 619   * @phpstan-return ( $display is true ? void : string )
 620   */
 621  function wp_loginout( $redirect = '', $display = true ) {
 622      if ( ! is_user_logged_in() ) {
 623          $link = '<a href="' . esc_url( wp_login_url( $redirect ) ) . '">' . __( 'Log in' ) . '</a>';
 624      } else {
 625          $link = '<a href="' . esc_url( wp_logout_url( $redirect ) ) . '">' . __( 'Log out' ) . '</a>';
 626      }
 627  
 628      if ( $display ) {
 629          /**
 630           * Filters the HTML output for the Log In/Log Out link.
 631           *
 632           * @since 1.5.0
 633           *
 634           * @param string $link The HTML link content.
 635           */
 636          echo apply_filters( 'loginout', $link );
 637      } else {
 638          /** This filter is documented in wp-includes/general-template.php */
 639          return apply_filters( 'loginout', $link );
 640      }
 641  }
 642  
 643  /**
 644   * Retrieves the logout URL.
 645   *
 646   * Returns the URL that allows the user to log out of the site.
 647   *
 648   * @since 2.7.0
 649   *
 650   * @param string $redirect Path to redirect to on logout.
 651   * @return string The logout URL. Note: HTML-encoded via esc_html() in wp_nonce_url().
 652   */
 653  function wp_logout_url( $redirect = '' ) {
 654      $args = array();
 655      if ( ! empty( $redirect ) ) {
 656          $args['redirect_to'] = urlencode( $redirect );
 657      }
 658  
 659      $logout_url = add_query_arg( $args, site_url( 'wp-login.php?action=logout', 'login' ) );
 660      $logout_url = wp_nonce_url( $logout_url, 'log-out' );
 661  
 662      /**
 663       * Filters the logout URL.
 664       *
 665       * @since 2.8.0
 666       *
 667       * @param string $logout_url The HTML-encoded logout URL.
 668       * @param string $redirect   Path to redirect to on logout.
 669       */
 670      return apply_filters( 'logout_url', $logout_url, $redirect );
 671  }
 672  
 673  /**
 674   * Retrieves the login URL.
 675   *
 676   * @since 2.7.0
 677   *
 678   * @param string $redirect     Path to redirect to on log in.
 679   * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.
 680   *                             Default false.
 681   * @return string The login URL. Not HTML-encoded.
 682   */
 683  function wp_login_url( $redirect = '', $force_reauth = false ) {
 684      $login_url = site_url( 'wp-login.php', 'login' );
 685  
 686      if ( ! empty( $redirect ) ) {
 687          $login_url = add_query_arg( 'redirect_to', urlencode( $redirect ), $login_url );
 688      }
 689  
 690      if ( $force_reauth ) {
 691          $login_url = add_query_arg( 'reauth', '1', $login_url );
 692      }
 693  
 694      /**
 695       * Filters the login URL.
 696       *
 697       * @since 2.8.0
 698       * @since 4.2.0 The `$force_reauth` parameter was added.
 699       *
 700       * @param string $login_url    The login URL. Not HTML-encoded.
 701       * @param string $redirect     The path to redirect to on login, if supplied.
 702       * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.
 703       */
 704      return apply_filters( 'login_url', $login_url, $redirect, $force_reauth );
 705  }
 706  
 707  /**
 708   * Returns the URL that allows the user to register on the site.
 709   *
 710   * @since 3.6.0
 711   *
 712   * @return string User registration URL.
 713   */
 714  function wp_registration_url() {
 715      /**
 716       * Filters the user registration URL.
 717       *
 718       * @since 3.6.0
 719       *
 720       * @param string $register The user registration URL.
 721       */
 722      return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );
 723  }
 724  
 725  /**
 726   * Provides a simple login form for use anywhere within WordPress.
 727   *
 728   * The login form HTML is echoed by default. Pass a false value for `$echo` to return it instead.
 729   *
 730   * @since 3.0.0
 731   * @since 6.6.0 Added `required_username` and `required_password` arguments.
 732   *
 733   * @param array $args {
 734   *     Optional. Array of options to control the form output. Default empty array.
 735   *
 736   *     @type bool   $echo              Whether to display the login form or return the form HTML code.
 737   *                                     Default true (echo).
 738   *     @type string $redirect          URL to redirect to. Must be absolute, as in "https://example.com/mypage/".
 739   *                                     Default is to redirect back to the request URI.
 740   *     @type string $form_id           ID attribute value for the form. Default 'loginform'.
 741   *     @type string $label_username    Label for the username or email address field. Default 'Username or Email Address'.
 742   *     @type string $label_password    Label for the password field. Default 'Password'.
 743   *     @type string $label_remember    Label for the remember field. Default 'Remember Me'.
 744   *     @type string $label_log_in      Label for the submit button. Default 'Log In'.
 745   *     @type string $id_username       ID attribute value for the username field. Default 'user_login'.
 746   *     @type string $id_password       ID attribute value for the password field. Default 'user_pass'.
 747   *     @type string $id_remember       ID attribute value for the remember field. Default 'rememberme'.
 748   *     @type string $id_submit         ID attribute value for the submit button. Default 'wp-submit'.
 749   *     @type bool   $remember          Whether to display the "rememberme" checkbox in the form.
 750   *     @type string $value_username    Default value for the username field. Default empty.
 751   *     @type bool   $value_remember    Whether the "Remember Me" checkbox should be checked by default.
 752   *                                     Default false (unchecked).
 753   *     @type bool   $required_username Whether the username field has the 'required' attribute.
 754   *                                     Default false.
 755   *     @type bool   $required_password Whether the password field has the 'required' attribute.
 756   *                                     Default false.
 757   *
 758   * }
 759   * @return string|void Login form HTML if 'echo' is false, nothing otherwise.
 760   * @phpstan-return ( $args is array{ echo: false|0|''|'0', ... } ? string : void )
 761   */
 762  function wp_login_form( $args = array() ) {
 763      $defaults = array(
 764          'echo'              => true,
 765          // Default 'redirect' value takes the user back to the request URI.
 766          'redirect'          => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'],
 767          'form_id'           => 'loginform',
 768          'label_username'    => __( 'Username or Email Address' ),
 769          'label_password'    => __( 'Password' ),
 770          'label_remember'    => __( 'Remember Me' ),
 771          'label_log_in'      => __( 'Log In' ),
 772          'id_username'       => 'user_login',
 773          'id_password'       => 'user_pass',
 774          'id_remember'       => 'rememberme',
 775          'id_submit'         => 'wp-submit',
 776          'remember'          => true,
 777          'value_username'    => '',
 778          // Set 'value_remember' to true to default the "Remember me" checkbox to checked.
 779          'value_remember'    => false,
 780          // Set 'required_username' to true to add the required attribute to username field.
 781          'required_username' => false,
 782          // Set 'required_password' to true to add the required attribute to password field.
 783          'required_password' => false,
 784      );
 785  
 786      /**
 787       * Filters the default login form output arguments.
 788       *
 789       * @since 3.0.0
 790       *
 791       * @see wp_login_form()
 792       *
 793       * @param array $defaults An array of default login form arguments.
 794       */
 795      $args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );
 796  
 797      /**
 798       * Filters content to display at the top of the login form.
 799       *
 800       * The filter evaluates just following the opening form tag element.
 801       *
 802       * @since 3.0.0
 803       *
 804       * @param string $content Content to display. Default empty.
 805       * @param array  $args    Array of login form arguments.
 806       */
 807      $login_form_top = apply_filters( 'login_form_top', '', $args );
 808  
 809      /**
 810       * Filters content to display in the middle of the login form.
 811       *
 812       * The filter evaluates just following the location where the 'login-password'
 813       * field is displayed.
 814       *
 815       * @since 3.0.0
 816       *
 817       * @param string $content Content to display. Default empty.
 818       * @param array  $args    Array of login form arguments.
 819       */
 820      $login_form_middle = apply_filters( 'login_form_middle', '', $args );
 821  
 822      /**
 823       * Filters content to display at the bottom of the login form.
 824       *
 825       * The filter evaluates just preceding the closing form tag element.
 826       *
 827       * @since 3.0.0
 828       *
 829       * @param string $content Content to display. Default empty.
 830       * @param array  $args    Array of login form arguments.
 831       */
 832      $login_form_bottom = apply_filters( 'login_form_bottom', '', $args );
 833  
 834      $direction_style = is_rtl() ? ' style="direction: ltr;"' : '';
 835  
 836      $form =
 837          sprintf(
 838              '<form name="%1$s" id="%1$s" action="%2$s" method="post">',
 839              esc_attr( $args['form_id'] ),
 840              esc_url( site_url( 'wp-login.php', 'login_post' ) )
 841          ) .
 842          $login_form_top .
 843          sprintf(
 844              '<p class="login-username">
 845                  <label for="%1$s">%2$s</label>
 846                  <input type="text" name="log" id="%1$s" autocomplete="username" class="input" value="%3$s" size="20"%4$s%5$s />
 847              </p>',
 848              esc_attr( $args['id_username'] ),
 849              esc_html( $args['label_username'] ),
 850              esc_attr( $args['value_username'] ),
 851              ( $args['required_username'] ? ' required="required"' : '' ),
 852              $direction_style
 853          ) .
 854          sprintf(
 855              '<p class="login-password">
 856                  <label for="%1$s">%2$s</label>
 857                  <input type="password" name="pwd" id="%1$s" autocomplete="current-password" spellcheck="false" class="input" value="" size="20"%3$s%4$s />
 858              </p>',
 859              esc_attr( $args['id_password'] ),
 860              esc_html( $args['label_password'] ),
 861              ( $args['required_password'] ? ' required="required"' : '' ),
 862              $direction_style
 863          ) .
 864          $login_form_middle .
 865          ( $args['remember'] ?
 866              sprintf(
 867                  '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="%1$s" value="forever"%2$s /> %3$s</label></p>',
 868                  esc_attr( $args['id_remember'] ),
 869                  ( $args['value_remember'] ? ' checked="checked"' : '' ),
 870                  esc_html( $args['label_remember'] )
 871              ) : ''
 872          ) .
 873          sprintf(
 874              '<p class="login-submit">
 875                  <input type="submit" name="wp-submit" id="%1$s" class="button button-primary" value="%2$s" />
 876                  <input type="hidden" name="redirect_to" value="%3$s" />
 877              </p>',
 878              esc_attr( $args['id_submit'] ),
 879              esc_attr( $args['label_log_in'] ),
 880              esc_url( $args['redirect'] )
 881          ) .
 882          $login_form_bottom .
 883          '</form>';
 884  
 885      if ( $args['echo'] ) {
 886          echo $form;
 887      } else {
 888          return $form;
 889      }
 890  }
 891  
 892  /**
 893   * Returns the URL that allows the user to reset the lost password.
 894   *
 895   * @since 2.8.0
 896   *
 897   * @param string $redirect Path to redirect to on login.
 898   * @return string Lost password URL.
 899   */
 900  function wp_lostpassword_url( $redirect = '' ) {
 901      $args = array(
 902          'action' => 'lostpassword',
 903      );
 904  
 905      if ( ! empty( $redirect ) ) {
 906          $args['redirect_to'] = urlencode( $redirect );
 907      }
 908  
 909      if ( is_multisite() ) {
 910          $blog_details  = get_site();
 911          $wp_login_path = $blog_details->path . 'wp-login.php';
 912      } else {
 913          $wp_login_path = 'wp-login.php';
 914      }
 915  
 916      $lostpassword_url = add_query_arg( $args, network_site_url( $wp_login_path, 'login' ) );
 917  
 918      /**
 919       * Filters the Lost Password URL.
 920       *
 921       * @since 2.8.0
 922       *
 923       * @param string $lostpassword_url The lost password page URL.
 924       * @param string $redirect         The path to redirect to on login.
 925       */
 926      return apply_filters( 'lostpassword_url', $lostpassword_url, $redirect );
 927  }
 928  
 929  /**
 930   * Displays the Registration or Admin link.
 931   *
 932   * Display a link which allows the user to navigate to the registration page if
 933   * not logged in and registration is enabled or to the dashboard if logged in.
 934   *
 935   * @since 1.5.0
 936   *
 937   * @param string $before  Text to output before the link. Default `<li>`.
 938   * @param string $after   Text to output after the link. Default `</li>`.
 939   * @param bool   $display Default to echo and not return the link.
 940   * @return string|void The registration or admin link when `$display` is false, or an empty
 941   *                     string when registration is disabled or the logged-in user cannot
 942   *                     access the dashboard. Nothing otherwise.
 943   * @phpstan-return ( $display is true ? void : string )
 944   */
 945  function wp_register( $before = '<li>', $after = '</li>', $display = true ) {
 946      if ( ! is_user_logged_in() ) {
 947          if ( get_option( 'users_can_register' ) ) {
 948              $link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __( 'Register' ) . '</a>' . $after;
 949          } else {
 950              $link = '';
 951          }
 952      } elseif ( current_user_can( 'read' ) ) {
 953          $link = $before . '<a href="' . admin_url() . '">' . __( 'Site Admin' ) . '</a>' . $after;
 954      } else {
 955          $link = '';
 956      }
 957  
 958      /**
 959       * Filters the HTML link to the Registration or Admin page.
 960       *
 961       * Users are sent to the admin page if logged-in, or the registration page
 962       * if enabled and logged-out.
 963       *
 964       * @since 1.5.0
 965       *
 966       * @param string $link The HTML code for the link to the Registration or Admin page.
 967       */
 968      $link = apply_filters( 'register', $link );
 969  
 970      if ( $display ) {
 971          echo $link;
 972      } else {
 973          return $link;
 974      }
 975  }
 976  
 977  /**
 978   * Theme container function for the 'wp_meta' action.
 979   *
 980   * The {@see 'wp_meta'} action can have several purposes, depending on how you use it,
 981   * but one purpose might have been to allow for theme switching.
 982   *
 983   * @since 1.5.0
 984   *
 985   * @link https://core.trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.
 986   */
 987  function wp_meta() {
 988      /**
 989       * Fires before displaying echoed content in the sidebar.
 990       *
 991       * @since 1.5.0
 992       */
 993      do_action( 'wp_meta' );
 994  }
 995  
 996  /**
 997   * Displays information about the current site.
 998   *
 999   * @since 0.71
1000   *
1001   * @see get_bloginfo() For possible `$show` values
1002   *
1003   * @param string $show Optional. Site information to display. Default empty.
1004   */
1005  function bloginfo( $show = '' ) {
1006      echo get_bloginfo( $show, 'display' );
1007  }
1008  
1009  /**
1010   * Retrieves information about the current site.
1011   *
1012   * Possible values for `$show` include:
1013   *
1014   * - 'name' - Site title (set in Settings > General)
1015   * - 'description' - Site tagline (set in Settings > General)
1016   * - 'wpurl' - The WordPress address (URL) (set in Settings > General)
1017   * - 'url' - The Site address (URL) (set in Settings > General)
1018   * - 'admin_email' - Admin email (set in Settings > General)
1019   * - 'charset' - The "Encoding for pages and feeds"  (set in Settings > Reading)
1020   * - 'version' - The current WordPress version
1021   * - 'html_type' - The Content-Type (default: "text/html"). Themes and plugins
1022   *   can override the default value using the {@see 'pre_option_html_type'} filter
1023   * - 'text_direction' - The text direction determined by the site's language. is_rtl()
1024   *   should be used instead
1025   * - 'language' - Language code for the current site
1026   * - 'stylesheet_url' - URL to the stylesheet for the active theme. An active child theme
1027   *   will take precedence over this value
1028   * - 'stylesheet_directory' - Directory path for the active theme.  An active child theme
1029   *   will take precedence over this value
1030   * - 'template_url' / 'template_directory' - URL of the active theme's directory. An active
1031   *   child theme will NOT take precedence over this value
1032   * - 'pingback_url' - The pingback XML-RPC file URL (xmlrpc.php)
1033   * - 'atom_url' - The Atom feed URL (/feed/atom)
1034   * - 'rdf_url' - The RDF/RSS 1.0 feed URL (/feed/rdf)
1035   * - 'rss_url' - The RSS 0.92 feed URL (/feed/rss)
1036   * - 'rss2_url' - The RSS 2.0 feed URL (/feed)
1037   * - 'comments_atom_url' - The comments Atom feed URL (/comments/feed)
1038   * - 'comments_rss2_url' - The comments RSS 2.0 feed URL (/comments/feed)
1039   *
1040   * Some `$show` values are deprecated and will be removed in future versions.
1041   * These options will trigger the _deprecated_argument() function.
1042   *
1043   * Deprecated arguments include:
1044   *
1045   * - 'siteurl' - Use 'url' instead
1046   * - 'home' - Use 'url' instead
1047   *
1048   * @since 0.71
1049   *
1050   * @global string $wp_version The WordPress version string.
1051   *
1052   * @param string $show   Optional. Site info to retrieve. Default empty (site name).
1053   * @param string $filter Optional. How to filter what is retrieved. Default 'raw'.
1054   * @return string Mostly string values, might be empty.
1055   */
1056  function get_bloginfo( $show = '', $filter = 'raw' ) {
1057      switch ( $show ) {
1058          case 'home':    // Deprecated.
1059          case 'siteurl': // Deprecated.
1060              _deprecated_argument(
1061                  __FUNCTION__,
1062                  '2.2.0',
1063                  sprintf(
1064                      /* translators: 1: 'siteurl'/'home' argument, 2: bloginfo() function name, 3: 'url' argument. */
1065                      __( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s option instead.' ),
1066                      '<code>' . $show . '</code>',
1067                      '<code>bloginfo()</code>',
1068                      '<code>url</code>'
1069                  )
1070              );
1071              // Intentional fall-through to be handled by the 'url' case.
1072          case 'url':
1073              $output = home_url();
1074              break;
1075          case 'wpurl':
1076              $output = site_url();
1077              break;
1078          case 'description':
1079              $output = get_option( 'blogdescription' );
1080              break;
1081          case 'rdf_url':
1082              $output = get_feed_link( 'rdf' );
1083              break;
1084          case 'rss_url':
1085              $output = get_feed_link( 'rss' );
1086              break;
1087          case 'rss2_url':
1088              $output = get_feed_link( 'rss2' );
1089              break;
1090          case 'atom_url':
1091              $output = get_feed_link( 'atom' );
1092              break;
1093          case 'comments_atom_url':
1094              $output = get_feed_link( 'comments_atom' );
1095              break;
1096          case 'comments_rss2_url':
1097              $output = get_feed_link( 'comments_rss2' );
1098              break;
1099          case 'pingback_url':
1100              $output = site_url( 'xmlrpc.php' );
1101              break;
1102          case 'stylesheet_url':
1103              $output = get_stylesheet_uri();
1104              break;
1105          case 'stylesheet_directory':
1106              $output = get_stylesheet_directory_uri();
1107              break;
1108          case 'template_directory':
1109          case 'template_url':
1110              $output = get_template_directory_uri();
1111              break;
1112          case 'admin_email':
1113              $output = get_option( 'admin_email' );
1114              break;
1115          case 'charset':
1116              $output = get_option( 'blog_charset' );
1117              if ( '' === $output ) {
1118                  $output = 'UTF-8';
1119              }
1120              break;
1121          case 'html_type':
1122              $output = get_option( 'html_type' );
1123              break;
1124          case 'version':
1125              global $wp_version;
1126              $output = $wp_version;
1127              break;
1128          case 'language':
1129              /*
1130               * translators: Translate this to the correct language tag for your locale,
1131               * see https://www.w3.org/International/articles/language-tags/ for reference.
1132               * Do not translate into your own language.
1133               */
1134              $output = __( 'html_lang_attribute' );
1135              if ( 'html_lang_attribute' === $output || preg_match( '/[^a-zA-Z0-9-]/', $output ) ) {
1136                  $output = determine_locale();
1137                  $output = str_replace( '_', '-', $output );
1138              }
1139              break;
1140          case 'text_direction':
1141              _deprecated_argument(
1142                  __FUNCTION__,
1143                  '2.2.0',
1144                  sprintf(
1145                      /* translators: 1: 'text_direction' argument, 2: bloginfo() function name, 3: is_rtl() function name. */
1146                      __( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s function instead.' ),
1147                      '<code>' . $show . '</code>',
1148                      '<code>bloginfo()</code>',
1149                      '<code>is_rtl()</code>'
1150                  )
1151              );
1152              if ( function_exists( 'is_rtl' ) ) {
1153                  $output = is_rtl() ? 'rtl' : 'ltr';
1154              } else {
1155                  $output = 'ltr';
1156              }
1157              break;
1158          case 'name':
1159          default:
1160              $output = get_option( 'blogname' );
1161              break;
1162      }
1163  
1164      if ( 'display' === $filter ) {
1165          if (
1166              str_contains( $show, 'url' )
1167              || str_contains( $show, 'directory' )
1168              || str_contains( $show, 'home' )
1169          ) {
1170              /**
1171               * Filters the URL returned by get_bloginfo().
1172               *
1173               * @since 2.0.5
1174               *
1175               * @param string $output The URL returned by bloginfo().
1176               * @param string $show   Type of information requested.
1177               */
1178              $output = apply_filters( 'bloginfo_url', $output, $show );
1179          } else {
1180              /**
1181               * Filters the site information returned by get_bloginfo().
1182               *
1183               * @since 0.71
1184               *
1185               * @param mixed  $output The requested non-URL site information.
1186               * @param string $show   Type of information requested.
1187               */
1188              $output = apply_filters( 'bloginfo', $output, $show );
1189          }
1190      }
1191  
1192      return $output;
1193  }
1194  
1195  /**
1196   * Returns the Site Icon URL.
1197   *
1198   * @since 4.3.0
1199   *
1200   * @param int    $size    Optional. Size of the site icon. Default 512 (pixels).
1201   * @param string $url     Optional. Fallback url if no site icon is found. Default empty.
1202   * @param int    $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
1203   * @return string Site Icon URL.
1204   */
1205  function get_site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
1206      $switched_blog = false;
1207  
1208      if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
1209          switch_to_blog( $blog_id );
1210          $switched_blog = true;
1211      }
1212  
1213      $site_icon_id = (int) get_option( 'site_icon' );
1214  
1215      if ( $site_icon_id ) {
1216          if ( $size >= 512 ) {
1217              $size_data = 'full';
1218          } else {
1219              $size_data = array( $size, $size );
1220          }
1221          $attachment_url = wp_get_attachment_image_url( $site_icon_id, $size_data );
1222          if ( $attachment_url ) {
1223              $url = is_ssl() ? set_url_scheme( $attachment_url, 'https' ) : $attachment_url;
1224          }
1225      }
1226  
1227      if ( $switched_blog ) {
1228          restore_current_blog();
1229      }
1230  
1231      /**
1232       * Filters the site icon URL.
1233       *
1234       * @since 4.4.0
1235       *
1236       * @param string $url     Site icon URL.
1237       * @param int    $size    Size of the site icon.
1238       * @param int    $blog_id ID of the blog to get the site icon for.
1239       */
1240      return apply_filters( 'get_site_icon_url', $url, $size, $blog_id );
1241  }
1242  
1243  /**
1244   * Displays the Site Icon URL.
1245   *
1246   * @since 4.3.0
1247   *
1248   * @param int    $size    Optional. Size of the site icon. Default 512 (pixels).
1249   * @param string $url     Optional. Fallback url if no site icon is found. Default empty.
1250   * @param int    $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
1251   */
1252  function site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
1253      echo esc_url( get_site_icon_url( $size, $url, $blog_id ) );
1254  }
1255  
1256  /**
1257   * Determines whether the site has a Site Icon.
1258   *
1259   * @since 4.3.0
1260   *
1261   * @param int $blog_id Optional. ID of the blog in question. Default current blog.
1262   * @return bool Whether the site has a site icon or not.
1263   */
1264  function has_site_icon( $blog_id = 0 ) {
1265      return (bool) get_site_icon_url( 512, '', $blog_id );
1266  }
1267  
1268  /**
1269   * Determines whether the site has a custom logo.
1270   *
1271   * @since 4.5.0
1272   *
1273   * @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
1274   * @return bool Whether the site has a custom logo or not.
1275   */
1276  function has_custom_logo( $blog_id = 0 ) {
1277      $switched_blog = false;
1278  
1279      if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
1280          switch_to_blog( $blog_id );
1281          $switched_blog = true;
1282      }
1283  
1284      $custom_logo_id = get_theme_mod( 'custom_logo' );
1285      $is_image       = ( $custom_logo_id ) ? wp_attachment_is_image( $custom_logo_id ) : false;
1286  
1287      if ( $switched_blog ) {
1288          restore_current_blog();
1289      }
1290  
1291      return $is_image;
1292  }
1293  
1294  /**
1295   * Returns a custom logo, linked to home unless the theme supports removing the link on the home page.
1296   *
1297   * @since 4.5.0
1298   * @since 5.5.0 Added option to remove the link on the home page with `unlink-homepage-logo` theme support
1299   *              for the `custom-logo` theme feature.
1300   * @since 5.5.1 Disabled lazy-loading by default.
1301   *
1302   * @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
1303   * @return string Custom logo markup.
1304   */
1305  function get_custom_logo( $blog_id = 0 ) {
1306      $html          = '';
1307      $switched_blog = false;
1308  
1309      if ( is_multisite() && ! empty( $blog_id ) && get_current_blog_id() !== (int) $blog_id ) {
1310          switch_to_blog( $blog_id );
1311          $switched_blog = true;
1312      }
1313  
1314      // We have a logo. Logo is go.
1315      if ( has_custom_logo() ) {
1316          $custom_logo_id   = get_theme_mod( 'custom_logo' );
1317          $custom_logo_attr = array(
1318              'class'   => 'custom-logo',
1319              'loading' => false,
1320          );
1321  
1322          $unlink_homepage_logo = (bool) get_theme_support( 'custom-logo', 'unlink-homepage-logo' );
1323  
1324          if ( $unlink_homepage_logo && is_front_page() && ! is_paged() ) {
1325              /*
1326               * If on the home page, set the logo alt attribute to an empty string,
1327               * as the image is decorative and doesn't need its purpose to be described.
1328               */
1329              $custom_logo_attr['alt'] = '';
1330          } else {
1331              /*
1332               * If the logo alt attribute is empty, get the site title and explicitly pass it
1333               * to the attributes used by wp_get_attachment_image().
1334               */
1335              $image_alt = get_post_meta( $custom_logo_id, '_wp_attachment_image_alt', true );
1336              if ( empty( $image_alt ) ) {
1337                  $custom_logo_attr['alt'] = get_bloginfo( 'name', 'display' );
1338              }
1339          }
1340  
1341          /**
1342           * Filters the list of custom logo image attributes.
1343           *
1344           * @since 5.5.0
1345           *
1346           * @param array $custom_logo_attr Custom logo image attributes.
1347           * @param int   $custom_logo_id   Custom logo attachment ID.
1348           * @param int   $blog_id          ID of the blog to get the custom logo for.
1349           */
1350          $custom_logo_attr = apply_filters( 'get_custom_logo_image_attributes', $custom_logo_attr, $custom_logo_id, $blog_id );
1351  
1352          /*
1353           * If the alt attribute is not empty, there's no need to explicitly pass it
1354           * because wp_get_attachment_image() already adds the alt attribute.
1355           */
1356          $image = wp_get_attachment_image( $custom_logo_id, 'full', false, $custom_logo_attr );
1357  
1358          // Check that we have a proper HTML img element.
1359          if ( $image ) {
1360  
1361              if ( $unlink_homepage_logo && is_front_page() && ! is_paged() ) {
1362                  // If on the home page, don't link the logo to home.
1363                  $html = sprintf(
1364                      '<span class="custom-logo-link">%1$s</span>',
1365                      $image
1366                  );
1367              } else {
1368                  $aria_current = ! is_paged() && ( is_front_page() || is_home() && ( (int) get_option( 'page_for_posts' ) !== get_queried_object_id() ) ) ? ' aria-current="page"' : '';
1369  
1370                  $html = sprintf(
1371                      '<a href="%1$s" class="custom-logo-link" rel="home"%2$s>%3$s</a>',
1372                      esc_url( home_url( '/' ) ),
1373                      $aria_current,
1374                      $image
1375                  );
1376              }
1377          }
1378      } elseif ( is_customize_preview() ) {
1379          // If no logo is set but we're in the Customizer, leave a placeholder (needed for the live preview).
1380          $html = sprintf(
1381              '<a href="%1$s" class="custom-logo-link" style="display:none;"><img class="custom-logo" alt="" /></a>',
1382              esc_url( home_url( '/' ) )
1383          );
1384      }
1385  
1386      if ( $switched_blog ) {
1387          restore_current_blog();
1388      }
1389  
1390      /**
1391       * Filters the custom logo output.
1392       *
1393       * @since 4.5.0
1394       * @since 4.6.0 Added the `$blog_id` parameter.
1395       *
1396       * @param string $html    Custom logo HTML output.
1397       * @param int    $blog_id ID of the blog to get the custom logo for.
1398       */
1399      return apply_filters( 'get_custom_logo', $html, $blog_id );
1400  }
1401  
1402  /**
1403   * Displays a custom logo, linked to home unless the theme supports removing the link on the home page.
1404   *
1405   * @since 4.5.0
1406   *
1407   * @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
1408   */
1409  function the_custom_logo( $blog_id = 0 ) {
1410      echo get_custom_logo( $blog_id );
1411  }
1412  
1413  /**
1414   * Returns document title for the current page.
1415   *
1416   * @since 4.4.0
1417   *
1418   * @global int $page  Page number of a single post.
1419   * @global int $paged Page number of a list of posts.
1420   *
1421   * @return string Tag with the document title.
1422   */
1423  function wp_get_document_title() {
1424  
1425      /**
1426       * Filters the document title before it is generated.
1427       *
1428       * Passing a non-empty value will short-circuit wp_get_document_title(),
1429       * returning that value instead.
1430       *
1431       * @since 4.4.0
1432       *
1433       * @param string $title The document title. Default empty string.
1434       */
1435      $title = apply_filters( 'pre_get_document_title', '' );
1436      if ( ! empty( $title ) ) {
1437          return $title;
1438      }
1439  
1440      global $page, $paged;
1441  
1442      $title = array(
1443          'title' => '',
1444      );
1445  
1446      // If it's a 404 page, use a "Page not found" title.
1447      if ( is_404() ) {
1448          $title['title'] = __( 'Page not found' );
1449  
1450          // If it's a search, use a dynamic search results title.
1451      } elseif ( is_search() ) {
1452          /* translators: %s: Search query. */
1453          $title['title'] = sprintf( __( 'Search Results for &#8220;%s&#8221;' ), get_search_query() );
1454  
1455          // If on the front page, use the site title.
1456      } elseif ( is_front_page() ) {
1457          $title['title'] = get_bloginfo( 'name', 'display' );
1458  
1459          // If on a post type archive, use the post type archive title.
1460      } elseif ( is_post_type_archive() ) {
1461          $title['title'] = post_type_archive_title( '', false );
1462  
1463          // If on a taxonomy archive, use the term title.
1464      } elseif ( is_tax() ) {
1465          $title['title'] = single_term_title( '', false );
1466  
1467          /*
1468          * If we're on the blog page that is not the homepage
1469          * or a single post of any post type, use the post title.
1470          */
1471      } elseif ( is_home() || is_singular() ) {
1472          $title['title'] = single_post_title( '', false );
1473  
1474          // If on a category or tag archive, use the term title.
1475      } elseif ( is_category() || is_tag() ) {
1476          $title['title'] = single_term_title( '', false );
1477  
1478          // If on an author archive, use the author's display name.
1479      } elseif ( is_author() && get_queried_object() ) {
1480          $author         = get_queried_object();
1481          $title['title'] = $author->display_name;
1482  
1483          // If it's a date archive, use the date as the title.
1484      } elseif ( is_year() ) {
1485          $title['title'] = get_the_date( _x( 'Y', 'yearly archives date format' ) );
1486  
1487      } elseif ( is_month() ) {
1488          $title['title'] = get_the_date( _x( 'F Y', 'monthly archives date format' ) );
1489  
1490      } elseif ( is_day() ) {
1491          $title['title'] = get_the_date();
1492      }
1493  
1494      // Add a page number if necessary.
1495      if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
1496          /* translators: %s: Page number. */
1497          $title['page'] = sprintf( __( 'Page %s' ), max( $paged, $page ) );
1498      }
1499  
1500      // Append the description or site title to give context.
1501      if ( is_front_page() ) {
1502          $title['tagline'] = get_bloginfo( 'description', 'display' );
1503      } else {
1504          $title['site'] = get_bloginfo( 'name', 'display' );
1505      }
1506  
1507      /**
1508       * Filters the separator for the document title.
1509       *
1510       * @since 4.4.0
1511       *
1512       * @param string $sep Document title separator. Default '-'.
1513       */
1514      $sep = apply_filters( 'document_title_separator', '-' );
1515  
1516      /**
1517       * Filters the parts of the document title.
1518       *
1519       * @since 4.4.0
1520       *
1521       * @param array $title {
1522       *     The document title parts.
1523       *
1524       *     @type string $title   Title of the viewed page.
1525       *     @type string $page    Optional. Page number if paginated.
1526       *     @type string $tagline Optional. Site description when on home page.
1527       *     @type string $site    Optional. Site title when not on home page.
1528       * }
1529       */
1530      $title = apply_filters( 'document_title_parts', $title );
1531  
1532      $title = implode( " $sep ", array_filter( $title ) );
1533  
1534      /**
1535       * Filters the document title.
1536       *
1537       * @since 5.8.0
1538       *
1539       * @param string $title Document title.
1540       */
1541      $title = apply_filters( 'document_title', $title );
1542  
1543      return $title;
1544  }
1545  
1546  /**
1547   * Displays title tag with content.
1548   *
1549   * @since 4.1.0
1550   * @since 4.4.0 Improved title output replaced `wp_title()`.
1551   * @access private
1552   */
1553  function _wp_render_title_tag() {
1554      if ( ! current_theme_supports( 'title-tag' ) ) {
1555          return;
1556      }
1557  
1558      echo '<title>' . wp_get_document_title() . '</title>' . "\n";
1559  }
1560  
1561  /**
1562   * Displays or retrieves page title for all areas of blog.
1563   *
1564   * By default, the page title will display the separator before the page title,
1565   * so that the blog title will be before the page title. This is not good for
1566   * title display, since the blog title shows up on most tabs and not what is
1567   * important, which is the page that the user is looking at.
1568   *
1569   * There are also SEO benefits to having the blog title after or to the 'right'
1570   * of the page title. However, it is mostly common sense to have the blog title
1571   * to the right with most browsers supporting tabs. You can achieve this by
1572   * using the seplocation parameter and setting the value to 'right'. This change
1573   * was introduced around 2.5.0, in case backward compatibility of themes is
1574   * important.
1575   *
1576   * @since 1.0.0
1577   *
1578   * @global WP_Locale $wp_locale WordPress date and time locale object.
1579   *
1580   * @param string $sep         Optional. How to separate the various items within the page title.
1581   *                            Default '&raquo;'.
1582   * @param bool   $display     Optional. Whether to display or retrieve title. Default true.
1583   * @param string $seplocation Optional. Location of the separator (either 'left' or 'right').
1584   * @return string|void String when `$display` is false, nothing otherwise.
1585   * @phpstan-return ( $display is true ? void : string )
1586   */
1587  function wp_title( $sep = '&raquo;', $display = true, $seplocation = '' ) {
1588      global $wp_locale;
1589  
1590      $m        = get_query_var( 'm' );
1591      $year     = get_query_var( 'year' );
1592      $monthnum = get_query_var( 'monthnum' );
1593      $day      = get_query_var( 'day' );
1594      $search   = get_query_var( 's' );
1595      $title    = '';
1596  
1597      $t_sep = '%WP_TITLE_SEP%'; // Temporary separator, for accurate flipping, if necessary.
1598  
1599      // If there is a post.
1600      if ( is_single() || ( is_home() && ! is_front_page() ) || ( is_page() && ! is_front_page() ) ) {
1601          $title = single_post_title( '', false );
1602      }
1603  
1604      // If there's a post type archive.
1605      if ( is_post_type_archive() ) {
1606          $post_type = get_query_var( 'post_type' );
1607          if ( is_array( $post_type ) ) {
1608              $post_type = reset( $post_type );
1609          }
1610          $post_type_object = get_post_type_object( $post_type );
1611          if ( ! $post_type_object->has_archive ) {
1612              $title = post_type_archive_title( '', false );
1613          }
1614      }
1615  
1616      // If there's a category or tag.
1617      if ( is_category() || is_tag() ) {
1618          $title = single_term_title( '', false );
1619      }
1620  
1621      // If there's a taxonomy.
1622      if ( is_tax() ) {
1623          $term = get_queried_object();
1624          if ( $term ) {
1625              $tax   = get_taxonomy( $term->taxonomy );
1626              $title = single_term_title( $tax->labels->name . $t_sep, false );
1627          }
1628      }
1629  
1630      // If there's an author.
1631      if ( is_author() && ! is_post_type_archive() ) {
1632          $author = get_queried_object();
1633          if ( $author ) {
1634              $title = $author->display_name;
1635          }
1636      }
1637  
1638      // Post type archives with has_archive should override terms.
1639      if ( is_post_type_archive() && $post_type_object->has_archive ) {
1640          $title = post_type_archive_title( '', false );
1641      }
1642  
1643      // If there's a month.
1644      if ( is_archive() && ! empty( $m ) ) {
1645          $my_year  = substr( $m, 0, 4 );
1646          $my_month = substr( $m, 4, 2 );
1647          $my_day   = (int) substr( $m, 6, 2 );
1648          $title    = $my_year .
1649              ( $my_month ? $t_sep . $wp_locale->get_month( $my_month ) : '' ) .
1650              ( $my_day ? $t_sep . $my_day : '' );
1651      }
1652  
1653      // If there's a year.
1654      if ( is_archive() && ! empty( $year ) ) {
1655          $title = $year;
1656          if ( ! empty( $monthnum ) ) {
1657              $title .= $t_sep . $wp_locale->get_month( $monthnum );
1658          }
1659          if ( ! empty( $day ) ) {
1660              $title .= $t_sep . zeroise( $day, 2 );
1661          }
1662      }
1663  
1664      // If it's a search.
1665      if ( is_search() ) {
1666          /* translators: 1: Separator, 2: Search query. */
1667          $title = sprintf( __( 'Search Results %1$s %2$s' ), $t_sep, strip_tags( $search ) );
1668      }
1669  
1670      // If it's a 404 page.
1671      if ( is_404() ) {
1672          $title = __( 'Page not found' );
1673      }
1674  
1675      if ( ! is_string( $title ) ) {
1676          $title = '';
1677      }
1678  
1679      $prefix      = '';
1680      $title_array = array();
1681      if ( '' !== $title ) {
1682          $prefix      = " $sep ";
1683          $title_array = explode( $t_sep, $title );
1684      }
1685  
1686      /**
1687       * Filters the parts of the page title.
1688       *
1689       * @since 4.0.0
1690       *
1691       * @param string[] $title_array Array of parts of the page title.
1692       */
1693      $title_array = apply_filters( 'wp_title_parts', $title_array );
1694  
1695      // Determines position of the separator and direction of the breadcrumb.
1696      if ( 'right' === $seplocation ) { // Separator on right, so reverse the order.
1697          $title_array = array_reverse( $title_array );
1698          $title       = implode( " $sep ", $title_array ) . $prefix;
1699      } else {
1700          $title = $prefix . implode( " $sep ", $title_array );
1701      }
1702  
1703      /**
1704       * Filters the text of the page title.
1705       *
1706       * @since 2.0.0
1707       *
1708       * @param string $title       Page title.
1709       * @param string $sep         Title separator.
1710       * @param string $seplocation Location of the separator (either 'left' or 'right').
1711       */
1712      $title = apply_filters( 'wp_title', $title, $sep, $seplocation );
1713  
1714      // Send it out.
1715      if ( ! $display ) {
1716          return $title;
1717      }
1718  
1719      echo $title;
1720  }
1721  
1722  /**
1723   * Displays or retrieves page title for post.
1724   *
1725   * This is optimized for single.php template file for displaying the post title.
1726   *
1727   * It does not support placing the separator after the title, but by leaving the
1728   * prefix parameter empty, you can set the title separator manually. The prefix
1729   * does not automatically place a space between the prefix, so if there should
1730   * be a space, the parameter value will need to have it at the end.
1731   *
1732   * @since 0.71
1733   *
1734   * @param string $prefix  Optional. What to display before the title.
1735   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1736   * @return string|null|void Title when retrieving, null on failure.
1737   *                          Nothing when displaying.
1738   * @phpstan-return ( $display is true ? void : string|null )
1739   */
1740  function single_post_title( $prefix = '', $display = true ) {
1741      $_post = get_queried_object();
1742  
1743      if ( ! isset( $_post->post_title ) ) {
1744          return null;
1745      }
1746  
1747      /**
1748       * Filters the page title for a single post.
1749       *
1750       * @since 0.71
1751       *
1752       * @param string  $_post_title The single post page title.
1753       * @param WP_Post $_post       The current post.
1754       */
1755      $title = apply_filters( 'single_post_title', $_post->post_title, $_post );
1756  
1757      if ( ! $display ) {
1758          return $prefix . $title;
1759      }
1760  
1761      echo $prefix . $title;
1762  }
1763  
1764  /**
1765   * Displays or retrieves title for a post type archive.
1766   *
1767   * This is optimized for archive.php and archive-{$post_type}.php template files
1768   * for displaying the title of the post type.
1769   *
1770   * @since 3.1.0
1771   *
1772   * @param string $prefix  Optional. What to display before the title.
1773   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1774   * @return string|null|void Title when retrieving, null on failure.
1775   *                          Nothing when displaying.
1776   * @phpstan-return ( $display is true ? void : string|null )
1777   */
1778  function post_type_archive_title( $prefix = '', $display = true ) {
1779      if ( ! is_post_type_archive() ) {
1780          return null;
1781      }
1782  
1783      $post_type = get_query_var( 'post_type' );
1784      if ( is_array( $post_type ) ) {
1785          $post_type = reset( $post_type );
1786      }
1787  
1788      $post_type_obj = get_post_type_object( $post_type );
1789  
1790      /**
1791       * Filters the post type archive title.
1792       *
1793       * @since 3.1.0
1794       *
1795       * @param string $post_type_name Post type 'name' label.
1796       * @param string $post_type      Post type.
1797       */
1798      $title = apply_filters( 'post_type_archive_title', $post_type_obj->labels->name, $post_type );
1799  
1800      if ( ! $display ) {
1801          return $prefix . $title;
1802      }
1803  
1804      echo $prefix . $title;
1805  }
1806  
1807  /**
1808   * Displays or retrieves page title for category archive.
1809   *
1810   * Useful for category template files for displaying the category page title.
1811   * The prefix does not automatically place a space between the prefix, so if
1812   * there should be a space, the parameter value will need to have it at the end.
1813   *
1814   * @since 0.71
1815   *
1816   * @param string $prefix  Optional. What to display before the title.
1817   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1818   * @return string|null|void Title when retrieving, null on failure.
1819   *                          Nothing when displaying.
1820   * @phpstan-return ( $display is true ? void : string|null )
1821   */
1822  function single_cat_title( $prefix = '', $display = true ) {
1823      if ( ! $display ) {
1824          return single_term_title( $prefix, false );
1825      }
1826  
1827      single_term_title( $prefix, true );
1828  }
1829  
1830  /**
1831   * Displays or retrieves page title for tag post archive.
1832   *
1833   * Useful for tag template files for displaying the tag page title. The prefix
1834   * does not automatically place a space between the prefix, so if there should
1835   * be a space, the parameter value will need to have it at the end.
1836   *
1837   * @since 2.3.0
1838   *
1839   * @param string $prefix  Optional. What to display before the title.
1840   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1841   * @return string|null|void Title when retrieving, null on failure.
1842   *                          Nothing when displaying.
1843   * @phpstan-return ( $display is true ? void : string|null )
1844   */
1845  function single_tag_title( $prefix = '', $display = true ) {
1846      if ( ! $display ) {
1847          return single_term_title( $prefix, false );
1848      }
1849  
1850      single_term_title( $prefix, true );
1851  }
1852  
1853  /**
1854   * Displays or retrieves page title for taxonomy term archive.
1855   *
1856   * Useful for taxonomy term template files for displaying the taxonomy term page title.
1857   * The prefix does not automatically place a space between the prefix, so if there should
1858   * be a space, the parameter value will need to have it at the end.
1859   *
1860   * @since 3.1.0
1861   *
1862   * @param string $prefix  Optional. What to display before the title.
1863   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1864   * @return string|null|void Title when retrieving, null on failure.
1865   *                          Nothing when displaying.
1866   * @phpstan-return ( $display is true ? void : string|null )
1867   */
1868  function single_term_title( $prefix = '', $display = true ) {
1869      $term = get_queried_object();
1870  
1871      if ( ! $term ) {
1872          return null;
1873      }
1874  
1875      if ( is_category() ) {
1876          /**
1877           * Filters the category archive page title.
1878           *
1879           * @since 2.0.10
1880           *
1881           * @param string $term_name Category name for archive being displayed.
1882           */
1883          $term_name = apply_filters( 'single_cat_title', $term->name );
1884      } elseif ( is_tag() ) {
1885          /**
1886           * Filters the tag archive page title.
1887           *
1888           * @since 2.3.0
1889           *
1890           * @param string $term_name Tag name for archive being displayed.
1891           */
1892          $term_name = apply_filters( 'single_tag_title', $term->name );
1893      } elseif ( is_tax() ) {
1894          /**
1895           * Filters the custom taxonomy archive page title.
1896           *
1897           * @since 3.1.0
1898           *
1899           * @param string $term_name Term name for archive being displayed.
1900           */
1901          $term_name = apply_filters( 'single_term_title', $term->name );
1902      } else {
1903          return null;
1904      }
1905  
1906      if ( empty( $term_name ) ) {
1907          return null;
1908      }
1909  
1910      if ( ! $display ) {
1911          return $prefix . $term_name;
1912      }
1913  
1914      echo $prefix . $term_name;
1915  }
1916  
1917  /**
1918   * Displays or retrieves page title for post archive based on date.
1919   *
1920   * Useful for when the template only needs to display the month and year,
1921   * if either are available. The prefix does not automatically place a space
1922   * between the prefix, so if there should be a space, the parameter value
1923   * will need to have it at the end.
1924   *
1925   * @since 0.71
1926   *
1927   * @global WP_Locale $wp_locale WordPress date and time locale object.
1928   *
1929   * @param string $prefix  Optional. What to display before the title.
1930   * @param bool   $display Optional. Whether to display or retrieve title. Default true.
1931   * @return string|false|null False if there's no valid title for the month. Title when retrieving.
1932   *
1933   * @phpstan-return ( $display is true ? false|null : string|false )
1934   */
1935  function single_month_title( $prefix = '', $display = true ) {
1936      global $wp_locale;
1937  
1938      $m        = get_query_var( 'm' );
1939      $year     = get_query_var( 'year' );
1940      $monthnum = get_query_var( 'monthnum' );
1941  
1942      if ( ! empty( $monthnum ) && ! empty( $year ) ) {
1943          $my_year  = $year;
1944          $my_month = $wp_locale->get_month( $monthnum );
1945      } elseif ( ! empty( $m ) ) {
1946          $my_year  = substr( $m, 0, 4 );
1947          $my_month = $wp_locale->get_month( substr( $m, 4, 2 ) );
1948      }
1949  
1950      if ( empty( $my_month ) ) {
1951          return false;
1952      }
1953  
1954      $result = $prefix . $my_month . $prefix . $my_year;
1955  
1956      if ( ! $display ) {
1957          return $result;
1958      }
1959  
1960      echo $result;
1961  
1962      return null;
1963  }
1964  
1965  /**
1966   * Displays the archive title based on the queried object.
1967   *
1968   * @since 4.1.0
1969   *
1970   * @see get_the_archive_title()
1971   *
1972   * @param string $before Optional. Content to prepend to the title. Default empty.
1973   * @param string $after  Optional. Content to append to the title. Default empty.
1974   */
1975  function the_archive_title( $before = '', $after = '' ) {
1976      $title = get_the_archive_title();
1977  
1978      if ( ! empty( $title ) ) {
1979          echo $before . $title . $after;
1980      }
1981  }
1982  
1983  /**
1984   * Retrieves the archive title based on the queried object.
1985   *
1986   * @since 4.1.0
1987   * @since 5.5.0 The title part is wrapped in a `<span>` element.
1988   *
1989   * @return string Archive title.
1990   */
1991  function get_the_archive_title() {
1992      $title  = __( 'Archives' );
1993      $prefix = '';
1994  
1995      if ( is_category() ) {
1996          $title  = single_cat_title( '', false );
1997          $prefix = _x( 'Category:', 'category archive title prefix' );
1998      } elseif ( is_tag() ) {
1999          $title  = single_tag_title( '', false );
2000          $prefix = _x( 'Tag:', 'tag archive title prefix' );
2001      } elseif ( is_author() ) {
2002          $title  = get_the_author();
2003          $prefix = _x( 'Author:', 'author archive title prefix' );
2004      } elseif ( is_year() ) {
2005          /* translators: See https://www.php.net/manual/datetime.format.php */
2006          $title  = get_the_date( _x( 'Y', 'yearly archives date format' ) );
2007          $prefix = _x( 'Year:', 'date archive title prefix' );
2008      } elseif ( is_month() ) {
2009          /* translators: See https://www.php.net/manual/datetime.format.php */
2010          $title  = get_the_date( _x( 'F Y', 'monthly archives date format' ) );
2011          $prefix = _x( 'Month:', 'date archive title prefix' );
2012      } elseif ( is_day() ) {
2013          /* translators: See https://www.php.net/manual/datetime.format.php */
2014          $title  = get_the_date( _x( 'F j, Y', 'daily archives date format' ) );
2015          $prefix = _x( 'Day:', 'date archive title prefix' );
2016      } elseif ( is_tax( 'post_format' ) ) {
2017          if ( is_tax( 'post_format', 'post-format-aside' ) ) {
2018              $title = _x( 'Asides', 'post format archive title' );
2019          } elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
2020              $title = _x( 'Galleries', 'post format archive title' );
2021          } elseif ( is_tax( 'post_format', 'post-format-image' ) ) {
2022              $title = _x( 'Images', 'post format archive title' );
2023          } elseif ( is_tax( 'post_format', 'post-format-video' ) ) {
2024              $title = _x( 'Videos', 'post format archive title' );
2025          } elseif ( is_tax( 'post_format', 'post-format-quote' ) ) {
2026              $title = _x( 'Quotes', 'post format archive title' );
2027          } elseif ( is_tax( 'post_format', 'post-format-link' ) ) {
2028              $title = _x( 'Links', 'post format archive title' );
2029          } elseif ( is_tax( 'post_format', 'post-format-status' ) ) {
2030              $title = _x( 'Statuses', 'post format archive title' );
2031          } elseif ( is_tax( 'post_format', 'post-format-audio' ) ) {
2032              $title = _x( 'Audio', 'post format archive title' );
2033          } elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
2034              $title = _x( 'Chats', 'post format archive title' );
2035          }
2036      } elseif ( is_post_type_archive() ) {
2037          $title  = post_type_archive_title( '', false );
2038          $prefix = _x( 'Archives:', 'post type archive title prefix' );
2039      } elseif ( is_tax() ) {
2040          $queried_object = get_queried_object();
2041          if ( $queried_object ) {
2042              $tax    = get_taxonomy( $queried_object->taxonomy );
2043              $title  = single_term_title( '', false );
2044              $prefix = sprintf(
2045                  /* translators: %s: Taxonomy singular name. */
2046                  _x( '%s:', 'taxonomy term archive title prefix' ),
2047                  $tax->labels->singular_name
2048              );
2049          }
2050      }
2051  
2052      $original_title = $title;
2053  
2054      /**
2055       * Filters the archive title prefix.
2056       *
2057       * @since 5.5.0
2058       *
2059       * @param string $prefix Archive title prefix.
2060       */
2061      $prefix = apply_filters( 'get_the_archive_title_prefix', $prefix );
2062      if ( $prefix ) {
2063          $title = sprintf(
2064              /* translators: 1: Title prefix. 2: Title. */
2065              _x( '%1$s %2$s', 'archive title' ),
2066              $prefix,
2067              '<span>' . $title . '</span>'
2068          );
2069      }
2070  
2071      /**
2072       * Filters the archive title.
2073       *
2074       * @since 4.1.0
2075       * @since 5.5.0 Added the `$prefix` and `$original_title` parameters.
2076       *
2077       * @param string $title          Archive title to be displayed.
2078       * @param string $original_title Archive title without prefix.
2079       * @param string $prefix         Archive title prefix.
2080       */
2081      return apply_filters( 'get_the_archive_title', $title, $original_title, $prefix );
2082  }
2083  
2084  /**
2085   * Displays category, tag, term, or author description.
2086   *
2087   * @since 4.1.0
2088   *
2089   * @see get_the_archive_description()
2090   *
2091   * @param string $before Optional. Content to prepend to the description. Default empty.
2092   * @param string $after  Optional. Content to append to the description. Default empty.
2093   */
2094  function the_archive_description( $before = '', $after = '' ) {
2095      $description = get_the_archive_description();
2096      if ( $description ) {
2097          echo $before . $description . $after;
2098      }
2099  }
2100  
2101  /**
2102   * Retrieves the description for an author, post type, or term archive.
2103   *
2104   * @since 4.1.0
2105   * @since 4.7.0 Added support for author archives.
2106   * @since 4.9.0 Added support for post type archives.
2107   *
2108   * @see term_description()
2109   *
2110   * @return string Archive description.
2111   */
2112  function get_the_archive_description() {
2113      if ( is_author() ) {
2114          $description = get_the_author_meta( 'description' );
2115      } elseif ( is_post_type_archive() ) {
2116          $description = get_the_post_type_description();
2117      } else {
2118          $description = term_description();
2119      }
2120  
2121      /**
2122       * Filters the archive description.
2123       *
2124       * @since 4.1.0
2125       *
2126       * @param string $description Archive description to be displayed.
2127       */
2128      return apply_filters( 'get_the_archive_description', $description );
2129  }
2130  
2131  /**
2132   * Retrieves the description for a post type archive.
2133   *
2134   * @since 4.9.0
2135   *
2136   * @return string The post type description.
2137   */
2138  function get_the_post_type_description() {
2139      $post_type = get_query_var( 'post_type' );
2140  
2141      if ( is_array( $post_type ) ) {
2142          $post_type = reset( $post_type );
2143      }
2144  
2145      $post_type_obj = get_post_type_object( $post_type );
2146  
2147      // Check if a description is set.
2148      $description = $post_type_obj->description ?? '';
2149  
2150      /**
2151       * Filters the description for a post type archive.
2152       *
2153       * @since 4.9.0
2154       *
2155       * @param string       $description   The post type description.
2156       * @param WP_Post_Type $post_type_obj The post type object.
2157       */
2158      return apply_filters( 'get_the_post_type_description', $description, $post_type_obj );
2159  }
2160  
2161  /**
2162   * Retrieves archive link content based on predefined or custom code.
2163   *
2164   * The format can be one of four styles. The 'link' for head element, 'option'
2165   * for use in the select element, 'html' for use in list (either ol or ul HTML
2166   * elements). Custom content is also supported using the before and after
2167   * parameters.
2168   *
2169   * The 'link' format uses the `<link>` HTML element with the **archives**
2170   * relationship. The before and after parameters are not used. The text
2171   * parameter is used to describe the link.
2172   *
2173   * The 'option' format uses the option HTML element for use in select element.
2174   * The value is the url parameter and the before and after parameters are used
2175   * between the text description.
2176   *
2177   * The 'html' format, which is the default, uses the li HTML element for use in
2178   * the list HTML elements. The before parameter is before the link and the after
2179   * parameter is after the closing link.
2180   *
2181   * The custom format uses the before parameter before the link ('a' HTML
2182   * element) and the after parameter after the closing link tag. If the above
2183   * three values for the format are not used, then custom format is assumed.
2184   *
2185   * @since 1.0.0
2186   * @since 5.2.0 Added the `$selected` parameter.
2187   *
2188   * @param string $url      URL to archive.
2189   * @param string $text     Archive text description.
2190   * @param string $format   Optional. Can be 'link', 'option', 'html', or custom. Default 'html'.
2191   * @param string $before   Optional. Content to prepend to the description. Default empty.
2192   * @param string $after    Optional. Content to append to the description. Default empty.
2193   * @param bool   $selected Optional. Set to true if the current page is the selected archive page. Default false.
2194   * @return string HTML link content for archive.
2195   */
2196  function get_archives_link( $url, $text, $format = 'html', $before = '', $after = '', $selected = false ) {
2197      $text         = wptexturize( $text );
2198      $url          = esc_url( $url );
2199      $aria_current = $selected ? ' aria-current="page"' : '';
2200  
2201      if ( 'link' === $format ) {
2202          $link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";
2203      } elseif ( 'option' === $format ) {
2204          $selected_attr = $selected ? " selected='selected'" : '';
2205          $link_html     = "\t<option value='$url'$selected_attr>$before $text $after</option>\n";
2206      } elseif ( 'html' === $format ) {
2207          $link_html = "\t<li>$before<a href='$url'$aria_current>$text</a>$after</li>\n";
2208      } else { // Custom.
2209          $link_html = "\t$before<a href='$url'$aria_current>$text</a>$after\n";
2210      }
2211  
2212      /**
2213       * Filters the archive link content.
2214       *
2215       * @since 2.6.0
2216       * @since 4.5.0 Added the `$url`, `$text`, `$format`, `$before`, and `$after` parameters.
2217       * @since 5.2.0 Added the `$selected` parameter.
2218       *
2219       * @param string $link_html The archive HTML link content.
2220       * @param string $url       URL to archive.
2221       * @param string $text      Archive text description.
2222       * @param string $format    Link format. Can be 'link', 'option', 'html', or custom.
2223       * @param string $before    Content to prepend to the description.
2224       * @param string $after     Content to append to the description.
2225       * @param bool   $selected  True if the current page is the selected archive.
2226       */
2227      return apply_filters( 'get_archives_link', $link_html, $url, $text, $format, $before, $after, $selected );
2228  }
2229  
2230  /**
2231   * Displays archive links based on type and format.
2232   *
2233   * @since 1.2.0
2234   * @since 4.4.0 The `$post_type` argument was added.
2235   * @since 5.2.0 The `$year`, `$monthnum`, `$day`, and `$w` arguments were added.
2236   *
2237   * @see get_archives_link()
2238   *
2239   * @global wpdb      $wpdb      WordPress database abstraction object.
2240   * @global WP_Locale $wp_locale WordPress date and time locale object.
2241   *
2242   * @param string|array $args {
2243   *     Default archive links arguments. Optional.
2244   *
2245   *     @type string     $type            Type of archive to retrieve. Accepts 'daily', 'weekly', 'monthly',
2246   *                                       'yearly', 'postbypost', or 'alpha'. Both 'postbypost' and 'alpha'
2247   *                                       display the same archive link list as well as post titles instead
2248   *                                       of displaying dates. The difference between the two is that 'alpha'
2249   *                                       will order by post title and 'postbypost' will order by post date.
2250   *                                       Default 'monthly'.
2251   *     @type string|int $limit           Number of links to limit the query to. Default empty (no limit).
2252   *     @type string     $format          Format each link should take using the $before and $after args.
2253   *                                       Accepts 'link' (`<link>` tag), 'option' (`<option>` tag), 'html'
2254   *                                       (`<li>` tag), or a custom format, which generates a link anchor
2255   *                                       with $before preceding and $after succeeding. Default 'html'.
2256   *     @type string     $before          Markup to prepend to the beginning of each link. Default empty.
2257   *     @type string     $after           Markup to append to the end of each link. Default empty.
2258   *     @type bool       $show_post_count Whether to display the post count alongside the link. Default false.
2259   *     @type bool|int   $echo            Whether to echo or return the links list. Default 1|true to echo.
2260   *     @type string     $order           Whether to use ascending or descending order. Accepts 'ASC', or 'DESC'.
2261   *                                       Default 'DESC'.
2262   *     @type string     $post_type       Post type. Default 'post'.
2263   *     @type string     $year            Year. Default current year.
2264   *     @type string     $monthnum        Month number. Default current month number.
2265   *     @type string     $day             Day. Default current day.
2266   *     @type string     $w               Week. Default current week.
2267   * }
2268   * @return string|null|void Archive links when 'echo' is false, null when the post type is
2269   *                          not viewable. Nothing otherwise.
2270   * @phpstan-return (
2271   *     $args is array{ echo: false|0|''|'0', ... }
2272   *         ? string|null
2273   *         : ( $args is ''|'0'|array ? void : string|null )
2274   * )
2275   */
2276  function wp_get_archives( $args = '' ) {
2277      global $wpdb, $wp_locale;
2278  
2279      $defaults = array(
2280          'type'            => 'monthly',
2281          'limit'           => '',
2282          'format'          => 'html',
2283          'before'          => '',
2284          'after'           => '',
2285          'show_post_count' => false,
2286          'echo'            => 1,
2287          'order'           => 'DESC',
2288          'post_type'       => 'post',
2289          'year'            => get_query_var( 'year' ),
2290          'monthnum'        => get_query_var( 'monthnum' ),
2291          'day'             => get_query_var( 'day' ),
2292          'w'               => get_query_var( 'w' ),
2293      );
2294  
2295      /**
2296       * Filters the arguments for displaying archive links.
2297       *
2298       * @since 7.0.0
2299       *
2300       * @see wp_get_archives()
2301       *
2302       * @param array<string, string|int|bool> $args Arguments.
2303       */
2304      $args = apply_filters( 'wp_get_archives_args', $args );
2305  
2306      $parsed_args = wp_parse_args( $args, $defaults );
2307  
2308      $post_type_object = get_post_type_object( $parsed_args['post_type'] );
2309      if ( ! is_post_type_viewable( $post_type_object ) ) {
2310          return null;
2311      }
2312  
2313      $parsed_args['post_type'] = $post_type_object->name;
2314  
2315      if ( '' === $parsed_args['type'] ) {
2316          $parsed_args['type'] = 'monthly';
2317      }
2318  
2319      if ( ! empty( $parsed_args['limit'] ) ) {
2320          $parsed_args['limit'] = absint( $parsed_args['limit'] );
2321          $parsed_args['limit'] = ' LIMIT ' . $parsed_args['limit'];
2322      }
2323  
2324      $order = strtoupper( $parsed_args['order'] );
2325      if ( 'ASC' !== $order ) {
2326          $order = 'DESC';
2327      }
2328  
2329      // This is what will separate dates on weekly archive links.
2330      $archive_week_separator = '&#8211;';
2331  
2332      $sql_where = $wpdb->prepare( "WHERE post_type = %s AND post_status = 'publish'", $parsed_args['post_type'] );
2333  
2334      /**
2335       * Filters the SQL WHERE clause for retrieving archives.
2336       *
2337       * @since 2.2.0
2338       *
2339       * @param string $sql_where   Portion of SQL query containing the WHERE clause.
2340       * @param array  $parsed_args An array of default arguments.
2341       */
2342      $where = apply_filters( 'getarchives_where', $sql_where, $parsed_args );
2343  
2344      /**
2345       * Filters the SQL JOIN clause for retrieving archives.
2346       *
2347       * @since 2.2.0
2348       *
2349       * @param string $sql_join    Portion of SQL query containing JOIN clause.
2350       * @param array  $parsed_args An array of default arguments.
2351       */
2352      $join = apply_filters( 'getarchives_join', '', $parsed_args );
2353  
2354      $output = '';
2355  
2356      $last_changed = wp_cache_get_last_changed( 'posts' );
2357  
2358      $limit = $parsed_args['limit'];
2359  
2360      if ( 'monthly' === $parsed_args['type'] ) {
2361          $query   = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";
2362          $key     = md5( $query );
2363          $key     = "wp_get_archives:$key";
2364          $results = wp_cache_get_salted( $key, 'post-queries', $last_changed );
2365          if ( ! $results ) {
2366              $results = $wpdb->get_results( $query );
2367              wp_cache_set_salted( $key, $results, 'post-queries', $last_changed );
2368          }
2369          if ( $results ) {
2370              $after = $parsed_args['after'];
2371              foreach ( (array) $results as $result ) {
2372                  $url = get_month_link( $result->year, $result->month );
2373                  if ( 'post' !== $parsed_args['post_type'] ) {
2374                      $url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2375                  }
2376                  /* translators: 1: Month name, 2: 4-digit year. */
2377                  $text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $result->month ), $result->year );
2378                  if ( $parsed_args['show_post_count'] ) {
2379                      $parsed_args['after'] = '&nbsp;(' . $result->posts . ')' . $after;
2380                  }
2381                  $selected = is_archive() && (string) $parsed_args['year'] === $result->year && (string) $parsed_args['monthnum'] === $result->month;
2382                  $output  .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2383              }
2384          }
2385      } elseif ( 'yearly' === $parsed_args['type'] ) {
2386          $query   = "SELECT YEAR(post_date) AS `year`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date) ORDER BY post_date $order $limit";
2387          $key     = md5( $query );
2388          $key     = "wp_get_archives:$key";
2389          $results = wp_cache_get_salted( $key, 'post-queries', $last_changed );
2390          if ( ! $results ) {
2391              $results = $wpdb->get_results( $query );
2392              wp_cache_set_salted( $key, $results, 'post-queries', $last_changed );
2393          }
2394          if ( $results ) {
2395              $after = $parsed_args['after'];
2396              foreach ( (array) $results as $result ) {
2397                  $url = get_year_link( $result->year );
2398                  if ( 'post' !== $parsed_args['post_type'] ) {
2399                      $url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2400                  }
2401                  $text = sprintf( '%d', $result->year );
2402                  if ( $parsed_args['show_post_count'] ) {
2403                      $parsed_args['after'] = '&nbsp;(' . $result->posts . ')' . $after;
2404                  }
2405                  $selected = is_archive() && (string) $parsed_args['year'] === $result->year;
2406                  $output  .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2407              }
2408          }
2409      } elseif ( 'daily' === $parsed_args['type'] ) {
2410          $query   = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, DAYOFMONTH(post_date) AS `dayofmonth`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date), DAYOFMONTH(post_date) ORDER BY post_date $order $limit";
2411          $key     = md5( $query );
2412          $key     = "wp_get_archives:$key";
2413          $results = wp_cache_get_salted( $key, 'post-queries', $last_changed );
2414          if ( ! $results ) {
2415              $results = $wpdb->get_results( $query );
2416              wp_cache_set_salted( $key, $results, 'post-queries', $last_changed );
2417          }
2418          if ( $results ) {
2419              $after       = $parsed_args['after'];
2420              $date_format = get_option( 'date_format' );
2421              foreach ( (array) $results as $result ) {
2422                  $url = get_day_link( $result->year, $result->month, $result->dayofmonth );
2423                  if ( 'post' !== $parsed_args['post_type'] ) {
2424                      $url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2425                  }
2426                  $date = sprintf( '%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth );
2427                  $text = mysql2date( $date_format, $date );
2428                  if ( $parsed_args['show_post_count'] ) {
2429                      $parsed_args['after'] = '&nbsp;(' . $result->posts . ')' . $after;
2430                  }
2431                  $selected = is_archive() && (string) $parsed_args['year'] === $result->year && (string) $parsed_args['monthnum'] === $result->month && (string) $parsed_args['day'] === $result->dayofmonth;
2432                  $output  .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2433              }
2434          }
2435      } elseif ( 'weekly' === $parsed_args['type'] ) {
2436          $week    = _wp_mysql_week( '`post_date`' );
2437          $query   = "SELECT DISTINCT $week AS `week`, YEAR( `post_date` ) AS `yr`, DATE_FORMAT( `post_date`, '%Y-%m-%d' ) AS `yyyymmdd`, count( `ID` ) AS `posts` FROM `$wpdb->posts` $join $where GROUP BY $week, YEAR( `post_date` ) ORDER BY `post_date` $order $limit";
2438          $key     = md5( $query );
2439          $key     = "wp_get_archives:$key";
2440          $results = wp_cache_get_salted( $key, 'post-queries', $last_changed );
2441          if ( ! $results ) {
2442              $results = $wpdb->get_results( $query );
2443              wp_cache_set_salted( $key, $results, 'post-queries', $last_changed );
2444          }
2445          $arc_w_last = '';
2446          if ( $results ) {
2447              $after         = $parsed_args['after'];
2448              $start_of_week = get_option( 'start_of_week' );
2449              $date_format   = get_option( 'date_format' );
2450              foreach ( (array) $results as $result ) {
2451                  if ( $result->week !== $arc_w_last ) {
2452                      $arc_year       = $result->yr;
2453                      $arc_w_last     = $result->week;
2454                      $arc_week       = get_weekstartend( $result->yyyymmdd, $start_of_week );
2455                      $arc_week_start = date_i18n( $date_format, $arc_week['start'] );
2456                      $arc_week_end   = date_i18n( $date_format, $arc_week['end'] );
2457                      $url            = add_query_arg(
2458                          array(
2459                              'm' => $arc_year,
2460                              'w' => $result->week,
2461                          ),
2462                          home_url( '/' )
2463                      );
2464                      if ( 'post' !== $parsed_args['post_type'] ) {
2465                          $url = add_query_arg( 'post_type', $parsed_args['post_type'], $url );
2466                      }
2467                      $text = $arc_week_start . $archive_week_separator . $arc_week_end;
2468                      if ( $parsed_args['show_post_count'] ) {
2469                          $parsed_args['after'] = '&nbsp;(' . $result->posts . ')' . $after;
2470                      }
2471                      $selected = is_archive() && (string) $parsed_args['year'] === $result->yr && (string) $parsed_args['w'] === $result->week;
2472                      $output  .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2473                  }
2474              }
2475          }
2476      } elseif ( ( 'postbypost' === $parsed_args['type'] ) || ( 'alpha' === $parsed_args['type'] ) ) {
2477          $orderby = ( 'alpha' === $parsed_args['type'] ) ? 'post_title ASC ' : 'post_date DESC, ID DESC ';
2478          $query   = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";
2479          $key     = md5( $query );
2480          $key     = "wp_get_archives:$key";
2481          $results = wp_cache_get_salted( $key, 'post-queries', $last_changed );
2482          if ( ! $results ) {
2483              $results = $wpdb->get_results( $query );
2484              wp_cache_set_salted( $key, $results, 'post-queries', $last_changed );
2485          }
2486          if ( $results ) {
2487              foreach ( (array) $results as $result ) {
2488                  if ( '0000-00-00 00:00:00' !== $result->post_date ) {
2489                      $url = get_permalink( $result );
2490                      if ( $result->post_title ) {
2491                          /** This filter is documented in wp-includes/post-template.php */
2492                          $text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
2493                      } else {
2494                          $text = $result->ID;
2495                      }
2496                      $selected = get_the_ID() === $result->ID;
2497                      $output  .= get_archives_link( $url, $text, $parsed_args['format'], $parsed_args['before'], $parsed_args['after'], $selected );
2498                  }
2499              }
2500          }
2501      }
2502  
2503      if ( $parsed_args['echo'] ) {
2504          echo $output;
2505      } else {
2506          return $output;
2507      }
2508  }
2509  
2510  /**
2511   * Gets number of days since the start of the week.
2512   *
2513   * @since 1.5.0
2514   *
2515   * @param int $num Number of day.
2516   * @return float Days since the start of the week.
2517   */
2518  function calendar_week_mod( $num ) {
2519      $base = 7;
2520      return ( $num - $base * floor( $num / $base ) );
2521  }
2522  
2523  /**
2524   * Displays calendar with days that have posts as links.
2525   *
2526   * The calendar is cached, which will be retrieved, if it exists. If there are
2527   * no posts for the month, then it will not be displayed.
2528   *
2529   * @since 1.0.0
2530   * @since 6.8.0 Added the `$args` parameter, with backward compatibility
2531   *              for the replaced `$initial` and `$display` parameters.
2532   *
2533   * @global wpdb      $wpdb      WordPress database abstraction object.
2534   * @global int       $m
2535   * @global int       $monthnum
2536   * @global int       $year
2537   * @global WP_Locale $wp_locale WordPress date and time locale object.
2538   * @global array     $posts
2539   *
2540   * @param array $args {
2541   *     Optional. Arguments for the `get_calendar` function.
2542   *
2543   *     @type bool   $initial   Whether to use initial calendar names. Default true.
2544   *     @type bool   $display   Whether to display the calendar output. Default true.
2545   *     @type string $post_type Optional. Post type. Default 'post'.
2546   * }
2547   * @return string|null|void Calendar HTML when `$display` is false, null when the site has
2548   *                          no posts. Nothing otherwise.
2549   * @phpstan-return ( $args is array{ display: false|0|''|'0', ... } ? string|null : void )
2550   */
2551  function get_calendar( $args = array() ) {
2552      global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
2553  
2554      $defaults = array(
2555          'initial'   => true,
2556          'display'   => true,
2557          'post_type' => 'post',
2558      );
2559  
2560      $original_args = func_get_args();
2561      $args          = array();
2562  
2563      if ( ! empty( $original_args ) ) {
2564          if ( ! is_array( $original_args[0] ) ) {
2565              if ( isset( $original_args[0] ) && is_bool( $original_args[0] ) ) {
2566                  $defaults['initial'] = $original_args[0];
2567              }
2568              if ( isset( $original_args[1] ) && is_bool( $original_args[1] ) ) {
2569                  $defaults['display'] = $original_args[1];
2570              }
2571          } else {
2572              $args = $original_args[0];
2573          }
2574      }
2575  
2576      /**
2577       * Filter the `get_calendar` function arguments before they are used.
2578       *
2579       * @since 6.8.0
2580       *
2581       * @param array $args {
2582       *     Optional. Arguments for the `get_calendar` function.
2583       *
2584       *     @type bool   $initial   Whether to use initial calendar names. Default true.
2585       *     @type bool   $display   Whether to display the calendar output. Default true.
2586       *     @type string $post_type Optional. Post type. Default 'post'.
2587       * }
2588       */
2589      $args = apply_filters( 'get_calendar_args', wp_parse_args( $args, $defaults ) );
2590  
2591      if ( ! post_type_exists( $args['post_type'] ) ) {
2592          $args['post_type'] = 'post';
2593      }
2594  
2595      $w = 0;
2596      if ( isset( $_GET['w'] ) ) {
2597          $w = (int) $_GET['w'];
2598      }
2599  
2600      /*
2601       * Normalize the cache key.
2602       *
2603       * The following ensures the same cache key is used for the same parameter
2604       * and parameter equivalents. This prevents `post_type > post, initial > true`
2605       * from generating a different key from the same values in the reverse order.
2606       *
2607       * `display` is excluded from the cache key as the cache contains the same
2608       * HTML regardless of this function's need to echo or return the output.
2609       *
2610       * The global values contain data generated by the URL query string variables.
2611       */
2612      $cache_args = $args;
2613      unset( $cache_args['display'] );
2614  
2615      $cache_args['globals'] = array(
2616          'm'        => $m,
2617          'monthnum' => $monthnum,
2618          'year'     => $year,
2619          'week'     => $w,
2620      );
2621  
2622      wp_recursive_ksort( $cache_args );
2623      $key   = md5( serialize( $cache_args ) );
2624      $cache = wp_cache_get( 'get_calendar', 'calendar' );
2625  
2626      if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) {
2627          /** This filter is documented in wp-includes/general-template.php */
2628          $output = apply_filters( 'get_calendar', $cache[ $key ], $args );
2629  
2630          if ( $args['display'] ) {
2631              echo $output;
2632              return;
2633          }
2634  
2635          return $output;
2636      }
2637  
2638      if ( ! is_array( $cache ) ) {
2639          $cache = array();
2640      }
2641  
2642      $post_type = $args['post_type'];
2643  
2644      // Quick check. If we have no posts at all, abort!
2645      if ( ! $posts ) {
2646          $gotsome = $wpdb->get_var(
2647              $wpdb->prepare(
2648                  "SELECT 1 as test
2649                  FROM $wpdb->posts
2650                  WHERE post_type = %s
2651                  AND post_status = 'publish'
2652                  LIMIT 1",
2653                  $post_type
2654              )
2655          );
2656  
2657          if ( ! $gotsome ) {
2658              $cache[ $key ] = '';
2659              wp_cache_set( 'get_calendar', $cache, 'calendar' );
2660              return null;
2661          }
2662      }
2663  
2664      // week_begins = 0 stands for Sunday.
2665      $week_begins = (int) get_option( 'start_of_week' );
2666  
2667      // Read the current date.
2668      list( $current_year, $current_month, $current_day ) = array_map( 'intval', explode( '-', current_time( 'Y-m-j' ) ) );
2669  
2670      // Let's figure out when we are.
2671      if ( ! empty( $monthnum ) && ! empty( $year ) ) {
2672          $thismonth = (int) $monthnum;
2673          $thisyear  = (int) $year;
2674      } elseif ( ! empty( $w ) ) {
2675          // We need to get the month from MySQL.
2676          $thisyear = (int) substr( $m, 0, 4 );
2677          // It seems MySQL's weeks disagree with PHP's.
2678          $d         = ( ( $w - 1 ) * 7 ) + 6;
2679          $thismonth = (int) $wpdb->get_var(
2680              $wpdb->prepare(
2681                  "SELECT DATE_FORMAT((DATE_ADD('%d0101', INTERVAL %d DAY) ), '%%m')",
2682                  $thisyear,
2683                  $d
2684              )
2685          );
2686      } elseif ( ! empty( $m ) ) {
2687          $thisyear = (int) substr( $m, 0, 4 );
2688          if ( strlen( $m ) < 6 ) {
2689              $thismonth = 1;
2690          } else {
2691              $thismonth = (int) substr( $m, 4, 2 );
2692          }
2693      } else {
2694          $thisyear  = $current_year;
2695          $thismonth = $current_month;
2696      }
2697  
2698      $unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear );
2699      $last_day  = gmdate( 't', $unixmonth );
2700  
2701      // Get the next and previous month and year with at least one post.
2702      $previous = $wpdb->get_row(
2703          $wpdb->prepare(
2704              "SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
2705              FROM $wpdb->posts
2706              WHERE post_date < '%d-%d-01'
2707              AND post_type = %s AND post_status = 'publish'
2708              ORDER BY post_date DESC
2709              LIMIT 1",
2710              $thisyear,
2711              zeroise( $thismonth, 2 ),
2712              $post_type
2713          )
2714      );
2715  
2716      $next = $wpdb->get_row(
2717          $wpdb->prepare(
2718              "SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
2719              FROM $wpdb->posts
2720              WHERE post_date > '%d-%d-%d 23:59:59'
2721              AND post_type = %s AND post_status = 'publish'
2722              ORDER BY post_date ASC
2723              LIMIT 1",
2724              $thisyear,
2725              zeroise( $thismonth, 2 ),
2726              $last_day,
2727              $post_type
2728          )
2729      );
2730  
2731      /* translators: Calendar caption: 1: Month name, 2: 4-digit year. */
2732      $calendar_caption = _x( '%1$s %2$s', 'calendar caption' );
2733      $calendar_output  = '<table id="wp-calendar" class="wp-calendar-table">
2734      <caption>' . sprintf(
2735          $calendar_caption,
2736          $wp_locale->get_month( $thismonth ),
2737          gmdate( 'Y', $unixmonth )
2738      ) . '</caption>
2739      <thead>
2740      <tr>';
2741  
2742      $myweek = array();
2743  
2744      for ( $wdcount = 0; $wdcount <= 6; $wdcount++ ) {
2745          $myweek[] = $wp_locale->get_weekday( ( $wdcount + $week_begins ) % 7 );
2746      }
2747  
2748      foreach ( $myweek as $wd ) {
2749          $day_name         = $args['initial'] ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
2750          $wd               = esc_attr( $wd );
2751          $calendar_output .= "\n\t\t<th scope=\"col\" aria-label=\"$wd\">$day_name</th>";
2752      }
2753  
2754      $calendar_output .= '
2755      </tr>
2756      </thead>
2757      <tbody>
2758      <tr>';
2759  
2760      $daywithpost = array();
2761  
2762      // Get days with posts.
2763      $dayswithposts = $wpdb->get_results(
2764          $wpdb->prepare(
2765              "SELECT DISTINCT DAYOFMONTH(post_date)
2766              FROM $wpdb->posts WHERE post_date >= '%d-%d-01 00:00:00'
2767              AND post_type = %s AND post_status = 'publish'
2768              AND post_date <= '%d-%d-%d 23:59:59'",
2769              $thisyear,
2770              zeroise( $thismonth, 2 ),
2771              $post_type,
2772              $thisyear,
2773              zeroise( $thismonth, 2 ),
2774              $last_day
2775          ),
2776          ARRAY_N
2777      );
2778  
2779      if ( $dayswithposts ) {
2780          foreach ( (array) $dayswithposts as $daywith ) {
2781              $daywithpost[] = (int) $daywith[0];
2782          }
2783      }
2784  
2785      // See how much we should pad in the beginning.
2786      $pad = calendar_week_mod( (int) gmdate( 'w', $unixmonth ) - $week_begins );
2787      if ( $pad > 0 ) {
2788          $calendar_output .= "\n\t\t" . '<td colspan="' . esc_attr( $pad ) . '" class="pad">&nbsp;</td>';
2789      }
2790  
2791      $newrow      = false;
2792      $daysinmonth = (int) gmdate( 't', $unixmonth );
2793  
2794      for ( $day = 1; $day <= $daysinmonth; ++$day ) {
2795          if ( $newrow ) {
2796              $calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
2797          }
2798  
2799          $newrow = false;
2800  
2801          if ( $current_day === $day
2802              && $current_month === $thismonth
2803              && $current_year === $thisyear
2804          ) {
2805              $calendar_output .= '<td id="today">';
2806          } else {
2807              $calendar_output .= '<td>';
2808          }
2809  
2810          if ( in_array( $day, $daywithpost, true ) ) {
2811              // Any posts today?
2812              $date_format = gmdate( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) );
2813              /* translators: Post calendar label. %s: Date. */
2814              $label            = sprintf( __( 'Posts published on %s' ), $date_format );
2815              $calendar_output .= sprintf(
2816                  '<a href="%s" aria-label="%s">%s</a>',
2817                  get_day_link( $thisyear, $thismonth, $day ),
2818                  esc_attr( $label ),
2819                  $day
2820              );
2821          } else {
2822              $calendar_output .= $day;
2823          }
2824  
2825          $calendar_output .= '</td>';
2826  
2827          if ( 6 === (int) calendar_week_mod( (int) gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) {
2828              $newrow = true;
2829          }
2830      }
2831  
2832      $pad = 7 - calendar_week_mod( (int) gmdate( 'w', mktime( 0, 0, 0, $thismonth, $day, $thisyear ) ) - $week_begins );
2833      if ( 0 < $pad && $pad < 7 ) {
2834          $calendar_output .= "\n\t\t" . '<td class="pad" colspan="' . esc_attr( $pad ) . '">&nbsp;</td>';
2835      }
2836  
2837      $calendar_output .= "\n\t</tr>\n\t</tbody>";
2838  
2839      $calendar_output .= "\n\t</table>";
2840  
2841      $calendar_output .= '<nav aria-label="' . __( 'Previous and next months' ) . '" class="wp-calendar-nav">';
2842  
2843      if ( $previous ) {
2844          $calendar_output .= "\n\t\t" . sprintf(
2845              '<span class="wp-calendar-nav-prev"><a href="%1$s">&laquo; %2$s</a></span>',
2846              get_month_link( $previous->year, $previous->month ),
2847              $wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) )
2848          );
2849      } else {
2850          $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-prev">&nbsp;</span>';
2851      }
2852  
2853      $calendar_output .= "\n\t\t" . '<span class="pad">&nbsp;</span>';
2854  
2855      if ( $next ) {
2856          $calendar_output .= "\n\t\t" . sprintf(
2857              '<span class="wp-calendar-nav-next"><a href="%1$s">%2$s &raquo;</a></span>',
2858              get_month_link( $next->year, $next->month ),
2859              $wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) )
2860          );
2861      } else {
2862          $calendar_output .= "\n\t\t" . '<span class="wp-calendar-nav-next">&nbsp;</span>';
2863      }
2864  
2865      $calendar_output .= '
2866      </nav>';
2867  
2868      $cache[ $key ] = $calendar_output;
2869      wp_cache_set( 'get_calendar', $cache, 'calendar' );
2870  
2871      /**
2872       * Filters the HTML calendar output.
2873       *
2874       * @since 3.0.0
2875       * @since 6.8.0 Added the `$args` parameter.
2876       *
2877       * @param string $calendar_output HTML output of the calendar.
2878       * @param array  $args {
2879       *     Optional. Array of display arguments.
2880       *
2881       *     @type bool   $initial   Whether to use initial calendar names. Default true.
2882       *     @type bool   $display   Whether to display the calendar output. Default true.
2883       *     @type string $post_type Optional. Post type. Default 'post'.
2884       * }
2885       */
2886      $calendar_output = apply_filters( 'get_calendar', $calendar_output, $args );
2887  
2888      if ( $args['display'] ) {
2889          echo $calendar_output;
2890          return;
2891      }
2892  
2893      return $calendar_output;
2894  }
2895  
2896  /**
2897   * Purges the cached results of get_calendar.
2898   *
2899   * @see get_calendar()
2900   * @since 2.1.0
2901   */
2902  function delete_get_calendar_cache() {
2903      wp_cache_delete( 'get_calendar', 'calendar' );
2904  }
2905  
2906  /**
2907   * Displays all of the allowed tags in HTML format with attributes.
2908   *
2909   * This is useful for displaying in the comment area, which elements and
2910   * attributes are supported. As well as any plugins which want to display it.
2911   *
2912   * @since 1.0.1
2913   * @since 4.4.0 No longer used in core.
2914   *
2915   * @global array $allowedtags
2916   *
2917   * @return string HTML allowed tags entity encoded.
2918   */
2919  function allowed_tags() {
2920      global $allowedtags;
2921      $allowed = '';
2922      foreach ( (array) $allowedtags as $tag => $attributes ) {
2923          $allowed .= '<' . $tag;
2924          if ( 0 < count( $attributes ) ) {
2925              foreach ( $attributes as $attribute => $limits ) {
2926                  $allowed .= ' ' . $attribute . '=""';
2927              }
2928          }
2929          $allowed .= '> ';
2930      }
2931      return htmlentities( $allowed );
2932  }
2933  
2934  /***** Date/Time tags */
2935  
2936  /**
2937   * Outputs the date in iso8601 format for xml files.
2938   *
2939   * @since 1.0.0
2940   */
2941  function the_date_xml() {
2942      echo mysql2date( 'Y-m-d', get_post()->post_date, false );
2943  }
2944  
2945  /**
2946   * Displays or retrieves the date of the post (once per date).
2947   *
2948   * Will only output the date if the current post's date is different from the
2949   * previous one output.
2950   *
2951   * i.e. Only one date listing will show per day worth of posts shown in the loop, even if the
2952   * function is called several times for each post.
2953   *
2954   * HTML output can be filtered with {@see 'the_date'}.
2955   * Date string output can be filtered with {@see 'get_the_date'}.
2956   *
2957   * @since 0.71
2958   *
2959   * @global string $currentday  The day of the current post in the loop.
2960   * @global string $previousday The day of the previous post in the loop.
2961   *
2962   * @param string $format  Optional. PHP date format. Defaults to the 'date_format' option.
2963   * @param string $before  Optional. Output before the date. Default empty.
2964   * @param string $after   Optional. Output after the date. Default empty.
2965   * @param bool   $display Optional. Whether to echo the date or return it. Default true.
2966   * @return string|void The date when `$display` is false, or an empty string when the post's
2967   *                     date matches the previously output one. Nothing otherwise.
2968   * @phpstan-return ( $display is true ? void : string )
2969   */
2970  function the_date( $format = '', $before = '', $after = '', $display = true ) {
2971      global $currentday, $previousday;
2972  
2973      $the_date = '';
2974  
2975      if ( is_new_day() ) {
2976          $the_date    = $before . get_the_date( $format ) . $after;
2977          $previousday = $currentday;
2978      }
2979  
2980      /**
2981       * Filters the date of the post, for display.
2982       *
2983       * @since 0.71
2984       *
2985       * @param string $the_date The formatted date string.
2986       * @param string $format   PHP date format.
2987       * @param string $before   HTML output before the date.
2988       * @param string $after    HTML output after the date.
2989       */
2990      $the_date = apply_filters( 'the_date', $the_date, $format, $before, $after );
2991  
2992      if ( ! $display ) {
2993          return $the_date;
2994      }
2995  
2996      echo $the_date;
2997  }
2998  
2999  /**
3000   * Retrieves the date of the post.
3001   *
3002   * Unlike the_date() this function will always return the date.
3003   * Modify output with the {@see 'get_the_date'} filter.
3004   *
3005   * @since 3.0.0
3006   *
3007   * @param string           $format Optional. PHP date format. Defaults to the 'date_format' option.
3008   * @param int|WP_Post|null $post   Optional. Post ID or WP_Post object. Default current post.
3009   * @return string|int|false Date the current post was written. False on failure.
3010   *
3011   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3012   */
3013  function get_the_date( $format = '', $post = null ) {
3014      $post = get_post( $post );
3015  
3016      if ( ! $post ) {
3017          return false;
3018      }
3019  
3020      $_format = ! empty( $format ) ? $format : get_option( 'date_format' );
3021  
3022      $the_date = get_post_time( $_format, false, $post, true );
3023  
3024      /**
3025       * Filters the date of the post.
3026       *
3027       * @since 3.0.0
3028       *
3029       * @param string|int $the_date Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3030       * @param string     $format   PHP date format.
3031       * @param WP_Post    $post     The post object.
3032       */
3033      return apply_filters( 'get_the_date', $the_date, $format, $post );
3034  }
3035  
3036  /**
3037   * Displays the date on which the post was last modified.
3038   *
3039   * @since 2.1.0
3040   *
3041   * @param string $format  Optional. PHP date format. Defaults to the 'date_format' option.
3042   * @param string $before  Optional. Output before the date. Default empty.
3043   * @param string $after   Optional. Output after the date. Default empty.
3044   * @param bool   $display Optional. Whether to echo the date or return it. Default true.
3045   * @return string|void The modified date when `$display` is false, nothing otherwise.
3046   * @phpstan-return ( $display is true ? void : string )
3047   */
3048  function the_modified_date( $format = '', $before = '', $after = '', $display = true ) {
3049      $the_modified_date = $before . get_the_modified_date( $format ) . $after;
3050  
3051      /**
3052       * Filters the date a post was last modified, for display.
3053       *
3054       * @since 2.1.0
3055       *
3056       * @param string $the_modified_date The last modified date.
3057       * @param string $format            PHP date format.
3058       * @param string $before            HTML output before the date.
3059       * @param string $after             HTML output after the date.
3060       */
3061      $the_modified_date = apply_filters( 'the_modified_date', $the_modified_date, $format, $before, $after );
3062  
3063      if ( ! $display ) {
3064          return $the_modified_date;
3065      }
3066  
3067      echo $the_modified_date;
3068  }
3069  
3070  /**
3071   * Retrieves the date on which the post was last modified.
3072   *
3073   * @since 2.1.0
3074   * @since 4.6.0 Added the `$post` parameter.
3075   *
3076   * @param string           $format Optional. PHP date format. Defaults to the 'date_format' option.
3077   * @param int|WP_Post|null $post   Optional. Post ID or WP_Post object. Default current post.
3078   * @return string|int|false Date the current post was modified. False on failure.
3079   *
3080   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3081   */
3082  function get_the_modified_date( $format = '', $post = null ) {
3083      $post = get_post( $post );
3084  
3085      if ( ! $post ) {
3086          // For backward compatibility, failures go through the filter below.
3087          $the_time = false;
3088      } else {
3089          $_format = ! empty( $format ) ? $format : get_option( 'date_format' );
3090  
3091          $the_time = get_post_modified_time( $_format, false, $post, true );
3092      }
3093  
3094      /**
3095       * Filters the date a post was last modified.
3096       *
3097       * @since 2.1.0
3098       * @since 4.6.0 Added the `$post` parameter.
3099       *
3100       * @param string|int|false $the_time The formatted date or false if no post is found.
3101       * @param string           $format   PHP date format.
3102       * @param WP_Post|null     $post     WP_Post object or null if no post is found.
3103       */
3104      return apply_filters( 'get_the_modified_date', $the_time, $format, $post );
3105  }
3106  
3107  /**
3108   * Displays the time of the post.
3109   *
3110   * @since 0.71
3111   *
3112   * @param string $format Optional. Format to use for retrieving the time the post
3113   *                       was written. Accepts 'G', 'U', or PHP date format.
3114   *                       Defaults to the 'time_format' option.
3115   */
3116  function the_time( $format = '' ) {
3117      /**
3118       * Filters the time of the post, for display.
3119       *
3120       * @since 0.71
3121       *
3122       * @param string $get_the_time The formatted time.
3123       * @param string $format       Format to use for retrieving the time the post
3124       *                             was written. Accepts 'G', 'U', or PHP date format.
3125       */
3126      echo apply_filters( 'the_time', get_the_time( $format ), $format );
3127  }
3128  
3129  /**
3130   * Retrieves the time of the post.
3131   *
3132   * @since 1.5.0
3133   *
3134   * @param string           $format Optional. Format to use for retrieving the time the post
3135   *                                 was written. Accepts 'G', 'U', or PHP date format.
3136   *                                 Defaults to the 'time_format' option.
3137   * @param int|WP_Post|null $post   Post ID or post object. Default is global `$post` object.
3138   * @return string|int|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3139   *                          False on failure.
3140   *
3141   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3142   */
3143  function get_the_time( $format = '', $post = null ) {
3144      $post = get_post( $post );
3145  
3146      if ( ! $post ) {
3147          return false;
3148      }
3149  
3150      $_format = ! empty( $format ) ? $format : get_option( 'time_format' );
3151  
3152      $the_time = get_post_time( $_format, false, $post, true );
3153  
3154      /**
3155       * Filters the time of the post.
3156       *
3157       * @since 1.5.0
3158       *
3159       * @param string|int $the_time Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3160       * @param string     $format   Format to use for retrieving the time the post
3161       *                             was written. Accepts 'G', 'U', or PHP date format.
3162       * @param WP_Post    $post     Post object.
3163       */
3164      return apply_filters( 'get_the_time', $the_time, $format, $post );
3165  }
3166  
3167  /**
3168   * Retrieves the localized time of the post.
3169   *
3170   * @since 2.0.0
3171   *
3172   * @param string           $format    Optional. Format to use for retrieving the time the post
3173   *                                    was written. Accepts 'G', 'U', or PHP date format. Default 'U'.
3174   * @param bool             $gmt       Optional. Whether to retrieve the GMT time. Default false.
3175   * @param int|WP_Post|null $post      Post ID or post object. Default is global `$post` object.
3176   * @param bool             $translate Whether to translate the time string. Default false.
3177   * @return string|int|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3178   *                          False on failure.
3179   *
3180   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3181   */
3182  function get_post_time( $format = 'U', $gmt = false, $post = null, $translate = false ) {
3183      $post = get_post( $post );
3184  
3185      if ( ! $post ) {
3186          return false;
3187      }
3188  
3189      $source   = ( $gmt ) ? 'gmt' : 'local';
3190      $datetime = get_post_datetime( $post, 'date', $source );
3191  
3192      if ( false === $datetime ) {
3193          return false;
3194      }
3195  
3196      if ( 'U' === $format || 'G' === $format ) {
3197          $time = $datetime->getTimestamp();
3198  
3199          // Returns a sum of timestamp with timezone offset. Ideally should never be used.
3200          if ( ! $gmt ) {
3201              $time += $datetime->getOffset();
3202          }
3203      } elseif ( $translate ) {
3204          $time = wp_date( $format, $datetime->getTimestamp(), $gmt ? new DateTimeZone( 'UTC' ) : null );
3205      } else {
3206          if ( $gmt ) {
3207              $datetime = $datetime->setTimezone( new DateTimeZone( 'UTC' ) );
3208          }
3209  
3210          $time = $datetime->format( $format );
3211      }
3212  
3213      /**
3214       * Filters the localized time of the post.
3215       *
3216       * @since 2.6.0
3217       *
3218       * @param string|int $time   Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3219       * @param string     $format Format to use for retrieving the date of the post.
3220       *                           Accepts 'G', 'U', or PHP date format.
3221       * @param bool       $gmt    Whether to retrieve the GMT time.
3222       */
3223      return apply_filters( 'get_post_time', $time, $format, $gmt );
3224  }
3225  
3226  /**
3227   * Retrieves post published or modified time as a `DateTimeImmutable` object instance.
3228   *
3229   * The object will be set to the timezone from WordPress settings.
3230   *
3231   * For legacy reasons, this function allows to choose to instantiate from local or UTC time in database.
3232   * Normally this should make no difference to the result. However, the values might get out of sync in database,
3233   * typically because of timezone setting changes. The parameter ensures the ability to reproduce backwards
3234   * compatible behaviors in such cases.
3235   *
3236   * @since 5.3.0
3237   *
3238   * @param int|WP_Post|null $post   Optional. Post ID or post object. Default is global `$post` object.
3239   * @param string           $field  Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
3240   *                                 Default 'date'.
3241   * @param string           $source Optional. Local or UTC time to use from database. Accepts 'local' or 'gmt'.
3242   *                                 Default 'local'.
3243   * @return DateTimeImmutable|false Time object on success, false on failure.
3244   */
3245  function get_post_datetime( $post = null, $field = 'date', $source = 'local' ) {
3246      $post = get_post( $post );
3247  
3248      if ( ! $post ) {
3249          return false;
3250      }
3251  
3252      $wp_timezone = wp_timezone();
3253  
3254      if ( 'gmt' === $source ) {
3255          $time     = ( 'modified' === $field ) ? $post->post_modified_gmt : $post->post_date_gmt;
3256          $timezone = new DateTimeZone( 'UTC' );
3257      } else {
3258          $time     = ( 'modified' === $field ) ? $post->post_modified : $post->post_date;
3259          $timezone = $wp_timezone;
3260      }
3261  
3262      if ( empty( $time ) || '0000-00-00 00:00:00' === $time ) {
3263          return false;
3264      }
3265  
3266      $datetime = date_create_immutable_from_format( 'Y-m-d H:i:s', $time, $timezone );
3267  
3268      if ( false === $datetime ) {
3269          return false;
3270      }
3271  
3272      return $datetime->setTimezone( $wp_timezone );
3273  }
3274  
3275  /**
3276   * Retrieves post published or modified time as a Unix timestamp.
3277   *
3278   * Note that this function returns a true Unix timestamp, not summed with timezone offset
3279   * like older WP functions.
3280   *
3281   * @since 5.3.0
3282   *
3283   * @param int|WP_Post|null $post  Optional. Post ID or post object. Default is global `$post` object.
3284   * @param string           $field Optional. Published or modified time to use from database. Accepts 'date' or 'modified'.
3285   *                                Default 'date'.
3286   * @return int|false Unix timestamp on success, false on failure.
3287   */
3288  function get_post_timestamp( $post = null, $field = 'date' ) {
3289      $datetime = get_post_datetime( $post, $field );
3290  
3291      if ( false === $datetime ) {
3292          return false;
3293      }
3294  
3295      return $datetime->getTimestamp();
3296  }
3297  
3298  /**
3299   * Displays the time at which the post was last modified.
3300   *
3301   * @since 2.0.0
3302   *
3303   * @param string $format Optional. Format to use for retrieving the time the post
3304   *                       was modified. Accepts 'G', 'U', or PHP date format.
3305   *                       Defaults to the 'time_format' option.
3306   */
3307  function the_modified_time( $format = '' ) {
3308      /**
3309       * Filters the localized time a post was last modified, for display.
3310       *
3311       * @since 2.0.0
3312       *
3313       * @param string|false $get_the_modified_time The formatted time or false if no post is found.
3314       * @param string       $format                Format to use for retrieving the time the post
3315       *                                            was modified. Accepts 'G', 'U', or PHP date format.
3316       */
3317      echo apply_filters( 'the_modified_time', get_the_modified_time( $format ), $format );
3318  }
3319  
3320  /**
3321   * Retrieves the time at which the post was last modified.
3322   *
3323   * @since 2.0.0
3324   * @since 4.6.0 Added the `$post` parameter.
3325   *
3326   * @param string           $format Optional. Format to use for retrieving the time the post
3327   *                                 was modified. Accepts 'G', 'U', or PHP date format.
3328   *                                 Defaults to the 'time_format' option.
3329   * @param int|WP_Post|null $post   Optional. Post ID or WP_Post object. Default current post.
3330   * @return string|int|false Formatted date string or Unix timestamp. False on failure.
3331   *
3332   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3333   */
3334  function get_the_modified_time( $format = '', $post = null ) {
3335      $post = get_post( $post );
3336  
3337      if ( ! $post ) {
3338          // For backward compatibility, failures go through the filter below.
3339          $the_time = false;
3340      } else {
3341          $_format = ! empty( $format ) ? $format : get_option( 'time_format' );
3342  
3343          $the_time = get_post_modified_time( $_format, false, $post, true );
3344      }
3345  
3346      /**
3347       * Filters the localized time a post was last modified.
3348       *
3349       * @since 2.0.0
3350       * @since 4.6.0 Added the `$post` parameter.
3351       *
3352       * @param string|int|false $the_time The formatted time or false if no post is found.
3353       * @param string           $format   Format to use for retrieving the time the post
3354       *                                   was modified. Accepts 'G', 'U', or PHP date format.
3355       * @param WP_Post|null     $post     WP_Post object or null if no post is found.
3356       */
3357      return apply_filters( 'get_the_modified_time', $the_time, $format, $post );
3358  }
3359  
3360  /**
3361   * Retrieves the time at which the post was last modified.
3362   *
3363   * @since 2.0.0
3364   *
3365   * @param string           $format    Optional. Format to use for retrieving the time the post
3366   *                                    was modified. Accepts 'G', 'U', or PHP date format. Default 'U'.
3367   * @param bool             $gmt       Optional. Whether to retrieve the GMT time. Default false.
3368   * @param int|WP_Post|null $post      Post ID or post object. Default is global `$post` object.
3369   * @param bool             $translate Whether to translate the time string. Default false.
3370   * @return string|int|false Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3371   *                          False on failure.
3372   *
3373   * @phpstan-return ( $format is 'U'|'G' ? int|false : string|false )
3374   */
3375  function get_post_modified_time( $format = 'U', $gmt = false, $post = null, $translate = false ) {
3376      $post = get_post( $post );
3377  
3378      if ( ! $post ) {
3379          return false;
3380      }
3381  
3382      $source   = ( $gmt ) ? 'gmt' : 'local';
3383      $datetime = get_post_datetime( $post, 'modified', $source );
3384  
3385      if ( false === $datetime ) {
3386          return false;
3387      }
3388  
3389      if ( 'U' === $format || 'G' === $format ) {
3390          $time = $datetime->getTimestamp();
3391  
3392          // Returns a sum of timestamp with timezone offset. Ideally should never be used.
3393          if ( ! $gmt ) {
3394              $time += $datetime->getOffset();
3395          }
3396      } elseif ( $translate ) {
3397          $time = wp_date( $format, $datetime->getTimestamp(), $gmt ? new DateTimeZone( 'UTC' ) : null );
3398      } else {
3399          if ( $gmt ) {
3400              $datetime = $datetime->setTimezone( new DateTimeZone( 'UTC' ) );
3401          }
3402  
3403          $time = $datetime->format( $format );
3404      }
3405  
3406      /**
3407       * Filters the localized time a post was last modified.
3408       *
3409       * @since 2.8.0
3410       *
3411       * @param string|int $time   Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
3412       * @param string     $format Format to use for retrieving the time the post was modified.
3413       *                           Accepts 'G', 'U', or PHP date format. Default 'U'.
3414       * @param bool       $gmt    Whether to retrieve the GMT time. Default false.
3415       */
3416      return apply_filters( 'get_post_modified_time', $time, $format, $gmt );
3417  }
3418  
3419  /**
3420   * Displays the localized weekday for the post.
3421   *
3422   * @since 0.71
3423   *
3424   * @global WP_Locale $wp_locale WordPress date and time locale object.
3425   */
3426  function the_weekday() {
3427      global $wp_locale;
3428  
3429      $post = get_post();
3430  
3431      if ( ! $post ) {
3432          return;
3433      }
3434  
3435      $the_weekday = $wp_locale->get_weekday( get_post_time( 'w', false, $post ) );
3436  
3437      /**
3438       * Filters the localized weekday of the post, for display.
3439       *
3440       * @since 0.71
3441       *
3442       * @param string $the_weekday
3443       */
3444      echo apply_filters( 'the_weekday', $the_weekday );
3445  }
3446  
3447  /**
3448   * Displays the localized weekday for the post.
3449   *
3450   * Will only output the weekday if the current post's weekday is different from
3451   * the previous one output.
3452   *
3453   * @since 0.71
3454   *
3455   * @global WP_Locale $wp_locale       WordPress date and time locale object.
3456   * @global string    $currentday      The day of the current post in the loop.
3457   * @global string    $previousweekday The day of the previous post in the loop.
3458   *
3459   * @param string $before Optional. Output before the date. Default empty.
3460   * @param string $after  Optional. Output after the date. Default empty.
3461   */
3462  function the_weekday_date( $before = '', $after = '' ) {
3463      global $wp_locale, $currentday, $previousweekday;
3464  
3465      $post = get_post();
3466  
3467      if ( ! $post ) {
3468          return;
3469      }
3470  
3471      $the_weekday_date = '';
3472  
3473      if ( $currentday !== $previousweekday ) {
3474          $the_weekday_date .= $before;
3475          $the_weekday_date .= $wp_locale->get_weekday( get_post_time( 'w', false, $post ) );
3476          $the_weekday_date .= $after;
3477          $previousweekday   = $currentday;
3478      }
3479  
3480      /**
3481       * Filters the localized weekday of the post, for display.
3482       *
3483       * @since 0.71
3484       *
3485       * @param string $the_weekday_date The weekday on which the post was written.
3486       * @param string $before           The HTML to output before the date.
3487       * @param string $after            The HTML to output after the date.
3488       */
3489      echo apply_filters( 'the_weekday_date', $the_weekday_date, $before, $after );
3490  }
3491  
3492  /**
3493   * Fires the wp_head action.
3494   *
3495   * See {@see 'wp_head'}.
3496   *
3497   * @since 1.2.0
3498   */
3499  function wp_head() {
3500      /**
3501       * Prints scripts or data in the head tag on the front end.
3502       *
3503       * @since 1.5.0
3504       */
3505      do_action( 'wp_head' );
3506  }
3507  
3508  /**
3509   * Fires the wp_footer action.
3510   *
3511   * See {@see 'wp_footer'}.
3512   *
3513   * @since 1.5.1
3514   */
3515  function wp_footer() {
3516      /**
3517       * Prints scripts or data before the closing body tag on the front end.
3518       *
3519       * @since 1.5.1
3520       */
3521      do_action( 'wp_footer' );
3522  }
3523  
3524  /**
3525   * Fires the wp_body_open action.
3526   *
3527   * See {@see 'wp_body_open'}.
3528   *
3529   * @since 5.2.0
3530   */
3531  function wp_body_open() {
3532      /**
3533       * Triggered after the opening body tag.
3534       *
3535       * @since 5.2.0
3536       */
3537      do_action( 'wp_body_open' );
3538  }
3539  
3540  /**
3541   * Displays the links to the general feeds.
3542   *
3543   * @since 2.8.0
3544   *
3545   * @param array $args Optional arguments.
3546   */
3547  function feed_links( $args = array() ) {
3548      if ( ! current_theme_supports( 'automatic-feed-links' ) ) {
3549          return;
3550      }
3551  
3552      $defaults = array(
3553          /* translators: Separator between site name and feed type in feed links. */
3554          'separator' => _x( '&raquo;', 'feed link' ),
3555          /* translators: 1: Site title, 2: Separator (raquo). */
3556          'feedtitle' => __( '%1$s %2$s Feed' ),
3557          /* translators: 1: Site title, 2: Separator (raquo). */
3558          'comstitle' => __( '%1$s %2$s Comments Feed' ),
3559      );
3560  
3561      $args = wp_parse_args( $args, $defaults );
3562  
3563      /**
3564       * Filters the feed links arguments.
3565       *
3566       * @since 6.7.0
3567       *
3568       * @param array $args An array of feed links arguments.
3569       */
3570      $args = apply_filters( 'feed_links_args', $args );
3571  
3572      /**
3573       * Filters whether to display the posts feed link.
3574       *
3575       * @since 4.4.0
3576       *
3577       * @param bool $show Whether to display the posts feed link. Default true.
3578       */
3579      if ( apply_filters( 'feed_links_show_posts_feed', true ) ) {
3580          printf(
3581              '<link rel="alternate" type="%s" title="%s" href="%s" />' . "\n",
3582              feed_content_type(),
3583              esc_attr( sprintf( $args['feedtitle'], get_bloginfo( 'name' ), $args['separator'] ) ),
3584              esc_url( get_feed_link() )
3585          );
3586      }
3587  
3588      /**
3589       * Filters whether to display the comments feed link.
3590       *
3591       * @since 4.4.0
3592       *
3593       * @param bool $show Whether to display the comments feed link. Default true.
3594       */
3595      if ( apply_filters( 'feed_links_show_comments_feed', true ) ) {
3596          printf(
3597              '<link rel="alternate" type="%s" title="%s" href="%s" />' . "\n",
3598              feed_content_type(),
3599              esc_attr( sprintf( $args['comstitle'], get_bloginfo( 'name' ), $args['separator'] ) ),
3600              esc_url( get_feed_link( 'comments_' . get_default_feed() ) )
3601          );
3602      }
3603  }
3604  
3605  /**
3606   * Displays the links to the extra feeds such as category feeds.
3607   *
3608   * @since 2.8.0
3609   *
3610   * @param array $args Optional arguments.
3611   */
3612  function feed_links_extra( $args = array() ) {
3613      $defaults = array(
3614          /* translators: Separator between site name and feed type in feed links. */
3615          'separator'     => _x( '&raquo;', 'feed link' ),
3616          /* translators: 1: Site name, 2: Separator (raquo), 3: Post title. */
3617          'singletitle'   => __( '%1$s %2$s %3$s Comments Feed' ),
3618          /* translators: 1: Site name, 2: Separator (raquo), 3: Category name. */
3619          'cattitle'      => __( '%1$s %2$s %3$s Category Feed' ),
3620          /* translators: 1: Site name, 2: Separator (raquo), 3: Tag name. */
3621          'tagtitle'      => __( '%1$s %2$s %3$s Tag Feed' ),
3622          /* translators: 1: Site name, 2: Separator (raquo), 3: Term name, 4: Taxonomy singular name. */
3623          'taxtitle'      => __( '%1$s %2$s %3$s %4$s Feed' ),
3624          /* translators: 1: Site name, 2: Separator (raquo), 3: Author name. */
3625          'authortitle'   => __( '%1$s %2$s Posts by %3$s Feed' ),
3626          /* translators: 1: Site name, 2: Separator (raquo), 3: Search query. */
3627          'searchtitle'   => __( '%1$s %2$s Search Results for &#8220;%3$s&#8221; Feed' ),
3628          /* translators: 1: Site name, 2: Separator (raquo), 3: Post type name. */
3629          'posttypetitle' => __( '%1$s %2$s %3$s Feed' ),
3630      );
3631  
3632      $args = wp_parse_args( $args, $defaults );
3633  
3634      /**
3635       * Filters the extra feed links arguments.
3636       *
3637       * @since 6.7.0
3638       *
3639       * @param array $args An array of extra feed links arguments.
3640       */
3641      $args = apply_filters( 'feed_links_extra_args', $args );
3642  
3643      /*
3644       * The template conditionals are referring to the global query, so the queried object is used rather than
3645       * depending on a global $post being set.
3646       */
3647      $queried_object = get_queried_object();
3648      if ( is_singular() && $queried_object instanceof WP_Post ) {
3649          $post = $queried_object;
3650  
3651          /** This filter is documented in wp-includes/general-template.php */
3652          $show_comments_feed = apply_filters( 'feed_links_show_comments_feed', true );
3653  
3654          /**
3655           * Filters whether to display the post comments feed link.
3656           *
3657           * This filter allows to enable or disable the feed link for a singular post
3658           * in a way that is independent of {@see 'feed_links_show_comments_feed'}
3659           * (which controls the global comments feed). The result of that filter
3660           * is accepted as a parameter.
3661           *
3662           * @since 6.1.0
3663           *
3664           * @param bool $show_comments_feed Whether to display the post comments feed link. Defaults to
3665           *                                 the {@see 'feed_links_show_comments_feed'} filter result.
3666           */
3667          $show_post_comments_feed = apply_filters( 'feed_links_extra_show_post_comments_feed', $show_comments_feed );
3668  
3669          if ( $show_post_comments_feed && ( comments_open( $post ) || pings_open( $post ) || (int) $post->comment_count > 0 ) ) {
3670              $title = sprintf(
3671                  $args['singletitle'],
3672                  get_bloginfo( 'name' ),
3673                  $args['separator'],
3674                  the_title_attribute(
3675                      array(
3676                          'echo' => false,
3677                          'post' => $post,
3678                      )
3679                  )
3680              );
3681  
3682              $feed_link = get_post_comments_feed_link( $post->ID );
3683  
3684              if ( $feed_link ) {
3685                  $href = $feed_link;
3686              }
3687          }
3688      } elseif ( is_post_type_archive() ) {
3689          /**
3690           * Filters whether to display the post type archive feed link.
3691           *
3692           * @since 6.1.0
3693           *
3694           * @param bool $show Whether to display the post type archive feed link. Default true.
3695           */
3696          $show_post_type_archive_feed = apply_filters( 'feed_links_extra_show_post_type_archive_feed', true );
3697  
3698          if ( $show_post_type_archive_feed ) {
3699              $post_type = get_query_var( 'post_type' );
3700  
3701              if ( is_array( $post_type ) ) {
3702                  $post_type = reset( $post_type );
3703              }
3704  
3705              $post_type_obj = get_post_type_object( $post_type );
3706  
3707              $title = sprintf(
3708                  $args['posttypetitle'],
3709                  get_bloginfo( 'name' ),
3710                  $args['separator'],
3711                  $post_type_obj->labels->name
3712              );
3713  
3714              $href = get_post_type_archive_feed_link( $post_type_obj->name );
3715          }
3716      } elseif ( is_category() ) {
3717          /**
3718           * Filters whether to display the category feed link.
3719           *
3720           * @since 6.1.0
3721           *
3722           * @param bool $show Whether to display the category feed link. Default true.
3723           */
3724          $show_category_feed = apply_filters( 'feed_links_extra_show_category_feed', true );
3725  
3726          if ( $show_category_feed ) {
3727              $term = get_queried_object();
3728  
3729              if ( $term ) {
3730                  $title = sprintf(
3731                      $args['cattitle'],
3732                      get_bloginfo( 'name' ),
3733                      $args['separator'],
3734                      $term->name
3735                  );
3736  
3737                  $href = get_category_feed_link( $term->term_id );
3738              }
3739          }
3740      } elseif ( is_tag() ) {
3741          /**
3742           * Filters whether to display the tag feed link.
3743           *
3744           * @since 6.1.0
3745           *
3746           * @param bool $show Whether to display the tag feed link. Default true.
3747           */
3748          $show_tag_feed = apply_filters( 'feed_links_extra_show_tag_feed', true );
3749  
3750          if ( $show_tag_feed ) {
3751              $term = get_queried_object();
3752  
3753              if ( $term ) {
3754                  $title = sprintf(
3755                      $args['tagtitle'],
3756                      get_bloginfo( 'name' ),
3757                      $args['separator'],
3758                      $term->name
3759                  );
3760  
3761                  $href = get_tag_feed_link( $term->term_id );
3762              }
3763          }
3764      } elseif ( is_tax() ) {
3765          /**
3766           * Filters whether to display the custom taxonomy feed link.
3767           *
3768           * @since 6.1.0
3769           *
3770           * @param bool $show Whether to display the custom taxonomy feed link. Default true.
3771           */
3772          $show_tax_feed = apply_filters( 'feed_links_extra_show_tax_feed', true );
3773  
3774          if ( $show_tax_feed ) {
3775              $term = get_queried_object();
3776  
3777              if ( $term ) {
3778                  $tax = get_taxonomy( $term->taxonomy );
3779  
3780                  $title = sprintf(
3781                      $args['taxtitle'],
3782                      get_bloginfo( 'name' ),
3783                      $args['separator'],
3784                      $term->name,
3785                      $tax->labels->singular_name
3786                  );
3787  
3788                  $href = get_term_feed_link( $term->term_id, $term->taxonomy );
3789              }
3790          }
3791      } elseif ( is_author() ) {
3792          /**
3793           * Filters whether to display the author feed link.
3794           *
3795           * @since 6.1.0
3796           *
3797           * @param bool $show Whether to display the author feed link. Default true.
3798           */
3799          $show_author_feed = apply_filters( 'feed_links_extra_show_author_feed', true );
3800  
3801          if ( $show_author_feed ) {
3802              $author_id = (int) get_query_var( 'author' );
3803  
3804              $title = sprintf(
3805                  $args['authortitle'],
3806                  get_bloginfo( 'name' ),
3807                  $args['separator'],
3808                  get_the_author_meta( 'display_name', $author_id )
3809              );
3810  
3811              $href = get_author_feed_link( $author_id );
3812          }
3813      } elseif ( is_search() ) {
3814          /**
3815           * Filters whether to display the search results feed link.
3816           *
3817           * @since 6.1.0
3818           *
3819           * @param bool $show Whether to display the search results feed link. Default true.
3820           */
3821          $show_search_feed = apply_filters( 'feed_links_extra_show_search_feed', true );
3822  
3823          if ( $show_search_feed ) {
3824              $title = sprintf(
3825                  $args['searchtitle'],
3826                  get_bloginfo( 'name' ),
3827                  $args['separator'],
3828                  get_search_query( false )
3829              );
3830  
3831              $href = get_search_feed_link();
3832          }
3833      }
3834  
3835      if ( isset( $title ) && isset( $href ) ) {
3836          printf(
3837              '<link rel="alternate" type="%s" title="%s" href="%s" />' . "\n",
3838              feed_content_type(),
3839              esc_attr( $title ),
3840              esc_url( $href )
3841          );
3842      }
3843  }
3844  
3845  /**
3846   * Displays the link to the Really Simple Discovery service endpoint.
3847   *
3848   * @link http://archipelago.phrasewise.com/rsd
3849   * @since 2.0.0
3850   */
3851  function rsd_link() {
3852      printf(
3853          '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="%s" />' . "\n",
3854          esc_url( site_url( 'xmlrpc.php?rsd', 'rpc' ) )
3855      );
3856  }
3857  
3858  /**
3859   * Displays a referrer `strict-origin-when-cross-origin` meta tag.
3860   *
3861   * Outputs a referrer `strict-origin-when-cross-origin` meta tag that tells the browser not to send
3862   * the full URL as a referrer to other sites when cross-origin assets are loaded.
3863   *
3864   * Typical usage is as a {@see 'wp_head'} callback:
3865   *
3866   *     add_action( 'wp_head', 'wp_strict_cross_origin_referrer' );
3867   *
3868   * @since 5.7.0
3869   */
3870  function wp_strict_cross_origin_referrer() {
3871      ?>
3872      <meta name='referrer' content='strict-origin-when-cross-origin' />
3873      <?php
3874  }
3875  
3876  /**
3877   * Displays site icon meta tags.
3878   *
3879   * @since 4.3.0
3880   *
3881   * @link https://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#rel-icon HTML5 specification link icon.
3882   */
3883  function wp_site_icon() {
3884      if ( ! has_site_icon() && ! is_customize_preview() ) {
3885          return;
3886      }
3887  
3888      $meta_tags = array();
3889      $icon_32   = get_site_icon_url( 32 );
3890      if ( empty( $icon_32 ) && is_customize_preview() ) {
3891          $icon_32 = '/favicon.ico'; // Serve default favicon URL in customizer so element can be updated for preview.
3892      }
3893      if ( $icon_32 ) {
3894          $meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( $icon_32 ) );
3895      }
3896      $icon_192 = get_site_icon_url( 192 );
3897      if ( $icon_192 ) {
3898          $meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( $icon_192 ) );
3899      }
3900      $icon_180 = get_site_icon_url( 180 );
3901      if ( $icon_180 ) {
3902          $meta_tags[] = sprintf( '<link rel="apple-touch-icon" href="%s" />', esc_url( $icon_180 ) );
3903      }
3904      $icon_270 = get_site_icon_url( 270 );
3905      if ( $icon_270 ) {
3906          $meta_tags[] = sprintf( '<meta name="msapplication-TileImage" content="%s" />', esc_url( $icon_270 ) );
3907      }
3908  
3909      /**
3910       * Filters the site icon meta tags, so plugins can add their own.
3911       *
3912       * @since 4.3.0
3913       *
3914       * @param string[] $meta_tags Array of Site Icon meta tags.
3915       */
3916      $meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags );
3917      $meta_tags = array_filter( $meta_tags );
3918  
3919      foreach ( $meta_tags as $meta_tag ) {
3920          echo "$meta_tag\n";
3921      }
3922  }
3923  
3924  /**
3925   * Prints resource hints to browsers for pre-fetching, pre-rendering
3926   * and pre-connecting to websites.
3927   *
3928   * Gives hints to browsers to prefetch specific pages or render them
3929   * in the background, to perform DNS lookups or to begin the connection
3930   * handshake (DNS, TCP, TLS) in the background.
3931   *
3932   * These performance improving indicators work by using `<link rel"…">`.
3933   *
3934   * @since 4.6.0
3935   */
3936  function wp_resource_hints() {
3937      $hints = array(
3938          'dns-prefetch' => wp_dependencies_unique_hosts(),
3939          'preconnect'   => array(),
3940          'prefetch'     => array(),
3941          'prerender'    => array(),
3942      );
3943  
3944      foreach ( $hints as $relation_type => $urls ) {
3945          $unique_urls = array();
3946  
3947          /**
3948           * Filters domains and URLs for resource hints of the given relation type.
3949           *
3950           * @since 4.6.0
3951           * @since 4.7.0 The `$urls` parameter accepts arrays of specific HTML attributes
3952           *              as its child elements.
3953           *
3954           * @param array  $urls {
3955           *     Array of resources and their attributes, or URLs to print for resource hints.
3956           *
3957           *     @type array|string ...$0 {
3958           *         Array of resource attributes, or a URL string.
3959           *
3960           *         @type string $href        URL to include in resource hints. Required.
3961           *         @type string $as          How the browser should treat the resource
3962           *                                   (`script`, `style`, `image`, `document`, etc).
3963           *         @type string $crossorigin Indicates the CORS policy of the specified resource.
3964           *         @type float  $pr          Expected probability that the resource hint will be used.
3965           *         @type string $type        Type of the resource (`text/html`, `text/css`, etc).
3966           *     }
3967           * }
3968           * @param string $relation_type The relation type the URLs are printed for. One of
3969           *                              'dns-prefetch', 'preconnect', 'prefetch', or 'prerender'.
3970           */
3971          $urls = apply_filters( 'wp_resource_hints', $urls, $relation_type );
3972  
3973          foreach ( $urls as $key => $url ) {
3974              $atts = array();
3975  
3976              if ( is_array( $url ) ) {
3977                  if ( isset( $url['href'] ) ) {
3978                      $atts = $url;
3979                      $url  = $url['href'];
3980                  } else {
3981                      continue;
3982                  }
3983              }
3984  
3985              $url = esc_url( $url, array( 'http', 'https' ) );
3986  
3987              if ( ! $url ) {
3988                  continue;
3989              }
3990  
3991              if ( isset( $unique_urls[ $url ] ) ) {
3992                  continue;
3993              }
3994  
3995              if ( in_array( $relation_type, array( 'preconnect', 'dns-prefetch' ), true ) ) {
3996                  $parsed = wp_parse_url( $url );
3997  
3998                  if ( empty( $parsed['host'] ) ) {
3999                      continue;
4000                  }
4001  
4002                  if ( 'preconnect' === $relation_type && ! empty( $parsed['scheme'] ) ) {
4003                      $url = $parsed['scheme'] . '://' . $parsed['host'];
4004                  } else {
4005                      // Use protocol-relative URLs for dns-prefetch or if scheme is missing.
4006                      $url = '//' . $parsed['host'];
4007                  }
4008              }
4009  
4010              $atts['rel']  = $relation_type;
4011              $atts['href'] = $url;
4012  
4013              $unique_urls[ $url ] = $atts;
4014          }
4015  
4016          foreach ( $unique_urls as $atts ) {
4017              $html = '';
4018  
4019              foreach ( $atts as $attr => $value ) {
4020                  if ( ! is_scalar( $value )
4021                      || ( ! in_array( $attr, array( 'as', 'crossorigin', 'href', 'pr', 'rel', 'type' ), true ) && ! is_numeric( $attr ) )
4022                  ) {
4023  
4024                      continue;
4025                  }
4026  
4027                  $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
4028  
4029                  if ( ! is_string( $attr ) ) {
4030                      $html .= " $value";
4031                  } else {
4032                      $html .= " $attr='$value'";
4033                  }
4034              }
4035  
4036              $html = trim( $html );
4037  
4038              echo "<link $html />\n";
4039          }
4040      }
4041  }
4042  
4043  /**
4044   * Prints resource preloads directives to browsers.
4045   *
4046   * Gives directive to browsers to preload specific resources that website will
4047   * need very soon, this ensures that they are available earlier and are less
4048   * likely to block the page's render. Preload directives should not be used for
4049   * non-render-blocking elements, as then they would compete with the
4050   * render-blocking ones, slowing down the render.
4051   *
4052   * These performance improving indicators work by using `<link rel="preload">`.
4053   *
4054   * @link https://developer.mozilla.org/en-US/docs/Web/HTML/Link_types/preload
4055   * @link https://web.dev/preload-responsive-images/
4056   *
4057   * @since 6.1.0
4058   */
4059  function wp_preload_resources() {
4060      /**
4061       * Filters domains and URLs for resource preloads.
4062       *
4063       * @since 6.1.0
4064       * @since 6.6.0 Added the `$fetchpriority` attribute.
4065       *
4066       * @param array  $preload_resources {
4067       *     Array of resources and their attributes, or URLs to print for resource preloads.
4068       *
4069       *     @type array ...$0 {
4070       *         Array of resource attributes.
4071       *
4072       *         @type string $href          URL to include in resource preloads. Required.
4073       *         @type string $as            How the browser should treat the resource
4074       *                                     (`script`, `style`, `image`, `document`, etc).
4075       *         @type string $crossorigin   Indicates the CORS policy of the specified resource.
4076       *         @type string $type          Type of the resource (`text/html`, `text/css`, etc).
4077       *         @type string $media         Accepts media types or media queries. Allows responsive preloading.
4078       *         @type string $imagesizes    Responsive source size to the source Set.
4079       *         @type string $imagesrcset   Responsive image sources to the source set.
4080       *         @type string $fetchpriority Fetchpriority value for the resource.
4081       *     }
4082       * }
4083       */
4084      $preload_resources = apply_filters( 'wp_preload_resources', array() );
4085  
4086      if ( ! is_array( $preload_resources ) ) {
4087          return;
4088      }
4089  
4090      $unique_resources = array();
4091  
4092      // Parse the complete resource list and extract unique resources.
4093      foreach ( $preload_resources as $resource ) {
4094          if ( ! is_array( $resource ) ) {
4095              continue;
4096          }
4097  
4098          $attributes = $resource;
4099          if ( isset( $resource['href'] ) ) {
4100              $href = $resource['href'];
4101              if ( isset( $unique_resources[ $href ] ) ) {
4102                  continue;
4103              }
4104              $unique_resources[ $href ] = $attributes;
4105              // Media can use imagesrcset and not href.
4106          } elseif ( ( 'image' === $resource['as'] ) &&
4107              ( isset( $resource['imagesrcset'] ) || isset( $resource['imagesizes'] ) )
4108          ) {
4109              if ( isset( $unique_resources[ $resource['imagesrcset'] ] ) ) {
4110                  continue;
4111              }
4112              $unique_resources[ $resource['imagesrcset'] ] = $attributes;
4113          } else {
4114              continue;
4115          }
4116      }
4117  
4118      // Build and output the HTML for each unique resource.
4119      foreach ( $unique_resources as $unique_resource ) {
4120          $html = '';
4121  
4122          foreach ( $unique_resource as $resource_key => $resource_value ) {
4123              if ( ! is_scalar( $resource_value ) ) {
4124                  continue;
4125              }
4126  
4127              // Ignore non-supported attributes.
4128              $non_supported_attributes = array( 'as', 'crossorigin', 'href', 'imagesrcset', 'imagesizes', 'type', 'media', 'fetchpriority' );
4129              if ( ! in_array( $resource_key, $non_supported_attributes, true ) && ! is_numeric( $resource_key ) ) {
4130                  continue;
4131              }
4132  
4133              // imagesrcset only usable when preloading image, ignore otherwise.
4134              if ( ( 'imagesrcset' === $resource_key ) && ( ! isset( $unique_resource['as'] ) || ( 'image' !== $unique_resource['as'] ) ) ) {
4135                  continue;
4136              }
4137  
4138              // imagesizes only usable when preloading image and imagesrcset present, ignore otherwise.
4139              if ( ( 'imagesizes' === $resource_key ) &&
4140                  ( ! isset( $unique_resource['as'] ) || ( 'image' !== $unique_resource['as'] ) || ! isset( $unique_resource['imagesrcset'] ) )
4141              ) {
4142                  continue;
4143              }
4144  
4145              $resource_value = ( 'href' === $resource_key ) ? esc_url( $resource_value, array( 'http', 'https' ) ) : esc_attr( $resource_value );
4146  
4147              if ( ! is_string( $resource_key ) ) {
4148                  $html .= " $resource_value";
4149              } else {
4150                  $html .= " $resource_key='$resource_value'";
4151              }
4152          }
4153          $html = trim( $html );
4154  
4155          printf( "<link rel='preload' %s />\n", $html );
4156      }
4157  }
4158  
4159  /**
4160   * Retrieves a list of unique hosts of all enqueued scripts and styles.
4161   *
4162   * @since 4.6.0
4163   *
4164   * @global WP_Scripts $wp_scripts The WP_Scripts object for printing scripts.
4165   * @global WP_Styles  $wp_styles  The WP_Styles object for printing styles.
4166   *
4167   * @return string[] A list of unique hosts of enqueued scripts and styles.
4168   */
4169  function wp_dependencies_unique_hosts() {
4170      global $wp_scripts, $wp_styles;
4171  
4172      $unique_hosts = array();
4173  
4174      foreach ( array( $wp_scripts, $wp_styles ) as $dependencies ) {
4175          if ( $dependencies instanceof WP_Dependencies && ! empty( $dependencies->queue ) ) {
4176              foreach ( $dependencies->queue as $handle ) {
4177                  if ( ! isset( $dependencies->registered[ $handle ] ) ) {
4178                      continue;
4179                  }
4180  
4181                  /* @var _WP_Dependency $dependency */
4182                  $dependency = $dependencies->registered[ $handle ];
4183                  $parsed     = wp_parse_url( $dependency->src );
4184  
4185                  if ( ! empty( $parsed['host'] )
4186                      && ! in_array( $parsed['host'], $unique_hosts, true ) && $parsed['host'] !== $_SERVER['SERVER_NAME']
4187                  ) {
4188                      $unique_hosts[] = $parsed['host'];
4189                  }
4190              }
4191          }
4192      }
4193  
4194      return $unique_hosts;
4195  }
4196  
4197  /**
4198   * Determines whether the user can access the visual editor.
4199   *
4200   * Checks if the user can access the visual editor and that it's supported by the user's browser.
4201   *
4202   * @since 2.0.0
4203   *
4204   * @global bool $wp_rich_edit Whether the user can access the visual editor.
4205   * @global bool $is_gecko     Whether the browser is Gecko-based.
4206   * @global bool $is_opera     Whether the browser is Opera.
4207   * @global bool $is_safari    Whether the browser is Safari.
4208   * @global bool $is_chrome    Whether the browser is Chrome.
4209   * @global bool $is_IE        Whether the browser is Internet Explorer.
4210   * @global bool $is_edge      Whether the browser is Microsoft Edge.
4211   *
4212   * @return bool True if the user can access the visual editor, false otherwise.
4213   */
4214  function user_can_richedit() {
4215      global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE, $is_edge;
4216  
4217      if ( ! isset( $wp_rich_edit ) ) {
4218          $wp_rich_edit = false;
4219  
4220          if ( 'true' === get_user_option( 'rich_editing' ) || ! is_user_logged_in() ) { // Default to 'true' for logged out users.
4221              if ( $is_safari ) {
4222                  $wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && (int) $match[1] >= 534 );
4223              } elseif ( $is_IE ) {
4224                  $wp_rich_edit = str_contains( $_SERVER['HTTP_USER_AGENT'], 'Trident/7.0;' );
4225              } elseif ( $is_gecko || $is_chrome || $is_edge || ( $is_opera && ! wp_is_mobile() ) ) {
4226                  $wp_rich_edit = true;
4227              }
4228          }
4229      }
4230  
4231      /**
4232       * Filters whether the user can access the visual editor.
4233       *
4234       * @since 2.1.0
4235       *
4236       * @param bool $wp_rich_edit Whether the user can access the visual editor.
4237       */
4238      return apply_filters( 'user_can_richedit', $wp_rich_edit );
4239  }
4240  
4241  /**
4242   * Finds out which editor should be displayed by default.
4243   *
4244   * Works out which of the editors to display as the current editor for a
4245   * user. The 'html' setting is for the "Code" editor tab.
4246   *
4247   * @since 2.5.0
4248   *
4249   * @return string Either 'tinymce', 'html', or 'test'
4250   */
4251  function wp_default_editor() {
4252      $r = user_can_richedit() ? 'tinymce' : 'html'; // Defaults.
4253      if ( wp_get_current_user() ) { // Look for cookie.
4254          $ed = get_user_setting( 'editor', 'tinymce' );
4255          $r  = ( in_array( $ed, array( 'tinymce', 'html', 'test' ), true ) ) ? $ed : $r;
4256      }
4257  
4258      /**
4259       * Filters which editor should be displayed by default.
4260       *
4261       * @since 2.5.0
4262       *
4263       * @param string $r Which editor should be displayed by default. Either 'tinymce', 'html', or 'test'.
4264       */
4265      return apply_filters( 'wp_default_editor', $r );
4266  }
4267  
4268  /**
4269   * Renders an editor.
4270   *
4271   * Using this function is the proper way to output all needed components for both TinyMCE and Quicktags.
4272   * _WP_Editors should not be used directly. See https://core.trac.wordpress.org/ticket/17144.
4273   *
4274   * NOTE: Once initialized the TinyMCE editor cannot be safely moved in the DOM. For that reason
4275   * running wp_editor() inside of a meta box is not a good idea unless only Quicktags is used.
4276   * On the post edit screen several actions can be used to include additional editors
4277   * containing TinyMCE: 'edit_page_form', 'edit_form_advanced' and 'dbx_post_sidebar'.
4278   * See https://core.trac.wordpress.org/ticket/19173 for more information.
4279   *
4280   * @see _WP_Editors::editor()
4281   * @see _WP_Editors::parse_settings()
4282   * @since 3.3.0
4283   *
4284   * @param string $content   Initial content for the editor.
4285   * @param string $editor_id HTML ID attribute value for the textarea and TinyMCE.
4286   *                          Should not contain square brackets.
4287   * @param array  $settings  See _WP_Editors::parse_settings() for description.
4288   */
4289  function wp_editor( $content, $editor_id, $settings = array() ) {
4290      if ( ! class_exists( '_WP_Editors', false ) ) {
4291          require  ABSPATH . WPINC . '/class-wp-editor.php';
4292      }
4293      _WP_Editors::editor( $content, $editor_id, $settings );
4294  }
4295  
4296  /**
4297   * Outputs the editor scripts, stylesheets, and default settings.
4298   *
4299   * The editor can be initialized when needed after page load.
4300   * See wp.editor.initialize() in wp-admin/js/editor.js for initialization options.
4301   *
4302   * @uses _WP_Editors
4303   * @since 4.8.0
4304   */
4305  function wp_enqueue_editor() {
4306      if ( ! class_exists( '_WP_Editors', false ) ) {
4307          require  ABSPATH . WPINC . '/class-wp-editor.php';
4308      }
4309  
4310      _WP_Editors::enqueue_default_editor();
4311  }
4312  
4313  /**
4314   * Enqueues assets needed by the code editor for the given settings.
4315   *
4316   * @since 4.9.0
4317   *
4318   * @see wp_enqueue_editor()
4319   * @see wp_get_code_editor_settings()
4320   * @see _WP_Editors::parse_settings()
4321   *
4322   * @param array $args {
4323   *     Args.
4324   *
4325   *     @type string   $type       The MIME type of the file to be edited.
4326   *     @type string   $file       Filename to be edited. Extension is used to sniff the type. Can be supplied as alternative to `$type` param.
4327   *     @type WP_Theme $theme      Theme being edited when on the theme file editor.
4328   *     @type string   $plugin     Plugin being edited when on the plugin file editor.
4329   *     @type array    $codemirror Additional CodeMirror setting overrides.
4330   *     @type array    $csslint    CSSLint rule overrides.
4331   *     @type array    $jshint     JSHint rule overrides.
4332   *     @type array    $htmlhint   HTMLHint rule overrides.
4333   * }
4334   * @return array|false Settings for the enqueued code editor, or false if the editor was not enqueued.
4335   */
4336  function wp_enqueue_code_editor( $args ) {
4337      if ( is_user_logged_in() && 'false' === wp_get_current_user()->syntax_highlighting ) {
4338          return false;
4339      }
4340  
4341      $settings = wp_get_code_editor_settings( $args );
4342  
4343      if ( empty( $settings ) || empty( $settings['codemirror'] ) ) {
4344          return false;
4345      }
4346  
4347      wp_enqueue_script( 'code-editor' );
4348      wp_enqueue_style( 'code-editor' );
4349  
4350      if ( isset( $settings['codemirror']['mode'] ) ) {
4351          $mode = $settings['codemirror']['mode'];
4352          if ( is_string( $mode ) ) {
4353              $mode = array(
4354                  'name' => $mode,
4355              );
4356          }
4357  
4358          if ( ! empty( $settings['codemirror']['lint'] ) ) {
4359              switch ( $mode['name'] ) {
4360                  case 'css':
4361                  case 'text/css':
4362                  case 'text/x-scss':
4363                  case 'text/x-less':
4364                      wp_enqueue_script( 'csslint' );
4365                      break;
4366                  case 'htmlmixed':
4367                  case 'text/html':
4368                  case 'php':
4369                  case 'application/x-httpd-php':
4370                  case 'text/x-php':
4371                      wp_enqueue_script( 'htmlhint' );
4372                      wp_enqueue_script( 'csslint' );
4373                      if ( ! current_user_can( 'unfiltered_html' ) ) {
4374                          wp_enqueue_script( 'htmlhint-kses' );
4375                      }
4376                      break;
4377                  case 'javascript':
4378                  case 'application/ecmascript':
4379                  case 'application/json':
4380                  case 'application/javascript':
4381                  case 'application/ld+json':
4382                  case 'text/typescript':
4383                  case 'application/typescript':
4384                      wp_enqueue_script( 'jsonlint' );
4385                      break;
4386              }
4387          }
4388      }
4389  
4390      wp_add_inline_script( 'code-editor', sprintf( 'jQuery.extend( wp.codeEditor.defaultSettings, %s );', wp_json_encode( $settings, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ) ) );
4391  
4392      /**
4393       * Fires when scripts and styles are enqueued for the code editor.
4394       *
4395       * @since 4.9.0
4396       *
4397       * @param array $settings Settings for the enqueued code editor.
4398       */
4399      do_action( 'wp_enqueue_code_editor', $settings );
4400  
4401      return $settings;
4402  }
4403  
4404  /**
4405   * Generates and returns code editor settings.
4406   *
4407   * @since 5.0.0
4408   *
4409   * @see wp_enqueue_code_editor()
4410   *
4411   * @param array $args {
4412   *     Args.
4413   *
4414   *     @type string   $type       The MIME type of the file to be edited.
4415   *     @type string   $file       Filename to be edited. Extension is used to sniff the type. Can be supplied as alternative to `$type` param.
4416   *     @type WP_Theme $theme      Theme being edited when on the theme file editor.
4417   *     @type string   $plugin     Plugin being edited when on the plugin file editor.
4418   *     @type array    $codemirror Additional CodeMirror setting overrides.
4419   *     @type array    $csslint    CSSLint rule overrides.
4420   *     @type array    $jshint     JSHint rule overrides.
4421   *     @type array    $htmlhint   HTMLHint rule overrides.
4422   * }
4423   * @return array|false Settings for the code editor.
4424   */
4425  function wp_get_code_editor_settings( $args ) {
4426      $settings = array(
4427          'codemirror' => array(
4428              'indentUnit'       => 4,
4429              'indentWithTabs'   => true,
4430              'inputStyle'       => 'contenteditable',
4431              'lineNumbers'      => true,
4432              'lineWrapping'     => true,
4433              'styleActiveLine'  => true,
4434              'continueComments' => true,
4435              'extraKeys'        => array(
4436                  'Ctrl-Space' => 'autocomplete',
4437                  'Ctrl-/'     => 'toggleComment',
4438                  'Cmd-/'      => 'toggleComment',
4439                  'Alt-F'      => 'findPersistent',
4440                  'Ctrl-F'     => 'findPersistent',
4441                  'Cmd-F'      => 'findPersistent',
4442              ),
4443              'direction'        => 'ltr', // Code is shown in LTR even in RTL languages.
4444              'gutters'          => array(),
4445          ),
4446          'csslint'    => array(
4447              'errors'                    => true, // Parsing errors.
4448              'box-model'                 => true,
4449              'display-property-grouping' => true,
4450              'duplicate-properties'      => true,
4451              'known-properties'          => true,
4452              'outline-none'              => true,
4453          ),
4454          'jshint'     => array(
4455              'esversion'       => 11,
4456              'module'          => str_ends_with( $args['file'] ?? '', '.mjs' ),
4457  
4458              // This script module URL is intentionally referenced here instead of registering an espree script module
4459              // in wp_default_script_modules(). This is a first stab at a core-only private module.
4460              'espreeModuleUrl' => add_query_arg( 'ver', '9.6.1', includes_url( 'js/codemirror/espree.min.js' ) ),
4461  
4462              // The following JSHint *linting rule* options are copied from
4463              // <https://github.com/WordPress/wordpress-develop/blob/6.9.0/.jshintrc>.
4464              // Parsing-related options such as `esversion` (and, in other contexts, `es5`, `es3`, `module`, `strict`)
4465              // are honored by the Espree-based integration, but these linting-rule options are not interpreted by Espree
4466              // and are kept only for compatibility/documentation with the original JSHint configuration.
4467              'boss'            => true,
4468              'curly'           => true,
4469              'eqeqeq'          => true,
4470              'eqnull'          => true,
4471              'expr'            => true,
4472              'immed'           => true,
4473              'noarg'           => true,
4474              'nonbsp'          => true,
4475              'quotmark'        => 'single',
4476              'undef'           => true,
4477              'unused'          => true,
4478              'browser'         => true,
4479              'globals'         => array(
4480                  '_'                 => false,
4481                  'Backbone'          => false,
4482                  'jQuery'            => false,
4483                  'JSON'              => false,
4484                  'wp'                => false,
4485                  'export'            => false,
4486                  'module'            => false,
4487                  'require'           => false,
4488                  'WorkerGlobalScope' => false,
4489                  'self'              => false,
4490                  'OffscreenCanvas'   => false,
4491                  'Promise'           => false,
4492              ),
4493          ),
4494          'htmlhint'   => array(
4495              'tagname-lowercase'        => true,
4496              'attr-lowercase'           => true,
4497              'attr-value-double-quotes' => false,
4498              'doctype-first'            => false,
4499              'tag-pair'                 => true,
4500              'spec-char-escape'         => true,
4501              'id-unique'                => true,
4502              'src-not-empty'            => true,
4503              'attr-no-duplication'      => true,
4504              'alt-require'              => true,
4505              'space-tab-mixed-disabled' => 'tab',
4506              'attr-unsafe-chars'        => true,
4507          ),
4508      );
4509  
4510      $type = '';
4511      if ( isset( $args['type'] ) ) {
4512          $type = $args['type'];
4513  
4514          // Remap MIME types to ones that CodeMirror modes will recognize.
4515          if ( 'application/x-patch' === $type || 'text/x-patch' === $type ) {
4516              $type = 'text/x-diff';
4517          }
4518      } elseif ( isset( $args['file'] ) && str_contains( basename( $args['file'] ), '.' ) ) {
4519          $extension = strtolower( pathinfo( $args['file'], PATHINFO_EXTENSION ) );
4520          foreach ( wp_get_mime_types() as $exts => $mime ) {
4521              if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
4522                  $type = $mime;
4523                  break;
4524              }
4525          }
4526  
4527          // Supply any types that are not matched by wp_get_mime_types().
4528          if ( empty( $type ) ) {
4529              switch ( $extension ) {
4530                  case 'conf':
4531                      $type = 'text/nginx';
4532                      break;
4533                  case 'css':
4534                      $type = 'text/css';
4535                      break;
4536                  case 'diff':
4537                  case 'patch':
4538                      $type = 'text/x-diff';
4539                      break;
4540                  case 'html':
4541                  case 'htm':
4542                      $type = 'text/html';
4543                      break;
4544                  case 'http':
4545                      $type = 'message/http';
4546                      break;
4547                  case 'js':
4548                  case 'mjs':
4549                      $type = 'text/javascript';
4550                      break;
4551                  case 'json':
4552                      $type = 'application/json';
4553                      break;
4554                  case 'jsx':
4555                      $type = 'text/jsx';
4556                      break;
4557                  case 'less':
4558                      $type = 'text/x-less';
4559                      break;
4560                  case 'md':
4561                      $type = 'text/x-gfm';
4562                      break;
4563                  case 'php':
4564                  case 'phtml':
4565                  case 'php3':
4566                  case 'php4':
4567                  case 'php5':
4568                  case 'php7':
4569                  case 'phps':
4570                      $type = 'application/x-httpd-php';
4571                      break;
4572                  case 'scss':
4573                      $type = 'text/x-scss';
4574                      break;
4575                  case 'sass':
4576                      $type = 'text/x-sass';
4577                      break;
4578                  case 'sh':
4579                  case 'bash':
4580                      $type = 'text/x-sh';
4581                      break;
4582                  case 'sql':
4583                      $type = 'text/x-sql';
4584                      break;
4585                  case 'svg':
4586                      $type = 'application/svg+xml';
4587                      break;
4588                  case 'xml':
4589                      $type = 'text/xml';
4590                      break;
4591                  case 'yml':
4592                  case 'yaml':
4593                      $type = 'text/x-yaml';
4594                      break;
4595                  case 'txt':
4596                  default:
4597                      $type = 'text/plain';
4598                      break;
4599              }
4600          }
4601      }
4602  
4603      if ( in_array( $type, array( 'text/css', 'text/x-scss', 'text/x-less', 'text/x-sass' ), true ) ) {
4604          $settings['codemirror'] = array_merge(
4605              $settings['codemirror'],
4606              array(
4607                  'mode'              => $type,
4608                  'lint'              => false,
4609                  'autoCloseBrackets' => true,
4610                  'matchBrackets'     => true,
4611              )
4612          );
4613      } elseif ( 'text/x-diff' === $type ) {
4614          $settings['codemirror'] = array_merge(
4615              $settings['codemirror'],
4616              array(
4617                  'mode' => 'diff',
4618              )
4619          );
4620      } elseif ( 'text/html' === $type ) {
4621          $settings['codemirror'] = array_merge(
4622              $settings['codemirror'],
4623              array(
4624                  'mode'              => 'htmlmixed',
4625                  'lint'              => true,
4626                  'autoCloseBrackets' => true,
4627                  'autoCloseTags'     => true,
4628                  'matchTags'         => array(
4629                      'bothTags' => true,
4630                  ),
4631              )
4632          );
4633  
4634          if ( ! current_user_can( 'unfiltered_html' ) ) {
4635              $settings['htmlhint']['kses'] = wp_kses_allowed_html( 'post' );
4636          }
4637      } elseif ( 'text/x-gfm' === $type ) {
4638          $settings['codemirror'] = array_merge(
4639              $settings['codemirror'],
4640              array(
4641                  'mode'                => 'gfm',
4642                  'highlightFormatting' => true,
4643              )
4644          );
4645      } elseif ( 'application/javascript' === $type || 'text/javascript' === $type ) {
4646          $settings['codemirror'] = array_merge(
4647              $settings['codemirror'],
4648              array(
4649                  'mode'              => 'javascript',
4650                  'lint'              => true,
4651                  'autoCloseBrackets' => true,
4652                  'matchBrackets'     => true,
4653              )
4654          );
4655      } elseif ( str_contains( $type, 'json' ) ) {
4656          $settings['codemirror'] = array_merge(
4657              $settings['codemirror'],
4658              array(
4659                  'mode'              => array(
4660                      'name' => 'javascript',
4661                  ),
4662                  'lint'              => true,
4663                  'autoCloseBrackets' => true,
4664                  'matchBrackets'     => true,
4665              )
4666          );
4667          if ( 'application/ld+json' === $type ) {
4668              $settings['codemirror']['mode']['jsonld'] = true;
4669          } else {
4670              $settings['codemirror']['mode']['json'] = true;
4671          }
4672      } elseif ( str_contains( $type, 'jsx' ) ) {
4673          $settings['codemirror'] = array_merge(
4674              $settings['codemirror'],
4675              array(
4676                  'mode'              => 'jsx',
4677                  'autoCloseBrackets' => true,
4678                  'matchBrackets'     => true,
4679              )
4680          );
4681      } elseif ( 'text/x-markdown' === $type ) {
4682          $settings['codemirror'] = array_merge(
4683              $settings['codemirror'],
4684              array(
4685                  'mode'                => 'markdown',
4686                  'highlightFormatting' => true,
4687              )
4688          );
4689      } elseif ( 'text/nginx' === $type ) {
4690          $settings['codemirror'] = array_merge(
4691              $settings['codemirror'],
4692              array(
4693                  'mode' => 'nginx',
4694              )
4695          );
4696      } elseif ( 'application/x-httpd-php' === $type ) {
4697          $settings['codemirror'] = array_merge(
4698              $settings['codemirror'],
4699              array(
4700                  'mode'              => 'php',
4701                  'autoCloseBrackets' => true,
4702                  'autoCloseTags'     => true,
4703                  'matchBrackets'     => true,
4704                  'matchTags'         => array(
4705                      'bothTags' => true,
4706                  ),
4707              )
4708          );
4709      } elseif ( 'text/x-sql' === $type || 'text/x-mysql' === $type ) {
4710          $settings['codemirror'] = array_merge(
4711              $settings['codemirror'],
4712              array(
4713                  'mode'              => 'sql',
4714                  'autoCloseBrackets' => true,
4715                  'matchBrackets'     => true,
4716              )
4717          );
4718      } elseif ( str_contains( $type, 'xml' ) ) {
4719          $settings['codemirror'] = array_merge(
4720              $settings['codemirror'],
4721              array(
4722                  'mode'              => 'xml',
4723                  'autoCloseBrackets' => true,
4724                  'autoCloseTags'     => true,
4725                  'matchTags'         => array(
4726                      'bothTags' => true,
4727                  ),
4728              )
4729          );
4730      } elseif ( 'text/x-yaml' === $type ) {
4731          $settings['codemirror'] = array_merge(
4732              $settings['codemirror'],
4733              array(
4734                  'mode' => 'yaml',
4735              )
4736          );
4737      } else {
4738          $settings['codemirror']['mode'] = $type;
4739      }
4740  
4741      if ( ! empty( $settings['codemirror']['lint'] ) ) {
4742          $settings['codemirror']['gutters'][] = 'CodeMirror-lint-markers';
4743      }
4744  
4745      // Let settings supplied via args override any defaults.
4746      foreach ( wp_array_slice_assoc( $args, array( 'codemirror', 'csslint', 'jshint', 'htmlhint' ) ) as $key => $value ) {
4747          $settings[ $key ] = array_merge(
4748              $settings[ $key ],
4749              $value
4750          );
4751      }
4752  
4753      /**
4754       * Filters settings that are passed into the code editor.
4755       *
4756       * Returning a falsey value will disable the syntax-highlighting code editor.
4757       *
4758       * @since 4.9.0
4759       *
4760       * @param array $settings The array of settings passed to the code editor.
4761       *                        A falsey value disables the editor.
4762       * @param array $args {
4763       *     Args passed when calling `get_code_editor_settings()`.
4764       *
4765       *     @type string   $type       The MIME type of the file to be edited.
4766       *     @type string   $file       Filename being edited.
4767       *     @type WP_Theme $theme      Theme being edited when on the theme file editor.
4768       *     @type string   $plugin     Plugin being edited when on the plugin file editor.
4769       *     @type array    $codemirror Additional CodeMirror setting overrides.
4770       *     @type array    $csslint    CSSLint rule overrides.
4771       *     @type array    $jshint     JSHint rule overrides.
4772       *     @type array    $htmlhint   HTMLHint rule overrides.
4773       * }
4774       */
4775      return apply_filters( 'wp_code_editor_settings', $settings, $args );
4776  }
4777  
4778  /**
4779   * Retrieves the contents of the search WordPress query variable.
4780   *
4781   * The search query string is passed through esc_attr() to ensure that it is safe
4782   * for placing in an HTML attribute.
4783   *
4784   * @since 2.3.0
4785   *
4786   * @param bool $escaped Whether the result is escaped. Default true.
4787   *                      Only use when you are later escaping it. Do not use unescaped.
4788   * @return string
4789   */
4790  function get_search_query( $escaped = true ) {
4791      /**
4792       * Filters the contents of the search query variable.
4793       *
4794       * @since 2.3.0
4795       *
4796       * @param mixed $search Contents of the search query variable.
4797       */
4798      $query = apply_filters( 'get_search_query', get_query_var( 's' ) );
4799  
4800      if ( $escaped ) {
4801          $query = esc_attr( $query );
4802      }
4803      return $query;
4804  }
4805  
4806  /**
4807   * Displays the contents of the search query variable.
4808   *
4809   * The search query string is passed through esc_attr() to ensure that it is safe
4810   * for placing in an HTML attribute.
4811   *
4812   * @since 2.1.0
4813   */
4814  function the_search_query() {
4815      /**
4816       * Filters the contents of the search query variable, for display.
4817       *
4818       * @since 2.3.0
4819       *
4820       * @param mixed $search Contents of the search query variable.
4821       */
4822      echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) );
4823  }
4824  
4825  /**
4826   * Gets the language attributes for the 'html' tag.
4827   *
4828   * Builds up a set of HTML attributes containing the text direction and language
4829   * information for the page.
4830   *
4831   * @since 4.3.0
4832   *
4833   * @param string $doctype Optional. The type of HTML document. Accepts 'xhtml' or 'html'. Default 'html'.
4834   * @return string A space-separated list of language attributes.
4835   */
4836  function get_language_attributes( $doctype = 'html' ) {
4837      $attributes = array();
4838  
4839      if ( function_exists( 'is_rtl' ) && is_rtl() ) {
4840          $attributes[] = 'dir="rtl"';
4841      }
4842  
4843      $lang      = get_bloginfo( 'language' );
4844      $html_type = get_option( 'html_type' );
4845  
4846      if ( $lang ) {
4847          if ( 'text/html' === $html_type || 'html' === $doctype ) {
4848              $attributes[] = 'lang="' . esc_attr( $lang ) . '"';
4849          }
4850  
4851          // The $html_type option may be false on a new install on the setup-config.php page.
4852          if ( ( $html_type && 'text/html' !== $html_type ) || 'xhtml' === $doctype ) {
4853              $attributes[] = 'xml:lang="' . esc_attr( $lang ) . '"';
4854          }
4855      }
4856  
4857      $output = implode( ' ', $attributes );
4858  
4859      /**
4860       * Filters the language attributes for display in the 'html' tag.
4861       *
4862       * @since 2.5.0
4863       * @since 4.3.0 Added the `$doctype` parameter.
4864       *
4865       * @param string $output  A space-separated list of language attributes.
4866       * @param string $doctype The type of HTML document (xhtml|html).
4867       */
4868      return apply_filters( 'language_attributes', $output, $doctype );
4869  }
4870  
4871  /**
4872   * Displays the language attributes for the 'html' tag.
4873   *
4874   * Builds up a set of HTML attributes containing the text direction and language
4875   * information for the page.
4876   *
4877   * @since 2.1.0
4878   * @since 4.3.0 Converted into a wrapper for get_language_attributes().
4879   *
4880   * @param string $doctype Optional. The type of HTML document. Accepts 'xhtml' or 'html'. Default 'html'.
4881   */
4882  function language_attributes( $doctype = 'html' ) {
4883      echo get_language_attributes( $doctype );
4884  }
4885  
4886  /**
4887   * Retrieves paginated links for archive post pages.
4888   *
4889   * Technically, the function can be used to create paginated link list for any
4890   * area. The 'base' argument is used to reference the url, which will be used to
4891   * create the paginated links. The 'format' argument is then used for replacing
4892   * the page number. It is however, most likely and by default, to be used on the
4893   * archive post pages.
4894   *
4895   * The 'type' argument controls format of the returned value. The default is
4896   * 'plain', which is just a string with the links separated by a newline
4897   * character. The other possible values are either 'array' or 'list'. The
4898   * 'array' value will return an array of the paginated link list to offer full
4899   * control of display. The 'list' value will place all of the paginated links in
4900   * an unordered HTML list.
4901   *
4902   * The 'total' argument is the total amount of pages and is an integer. The
4903   * 'current' argument is the current page number and is also an integer.
4904   *
4905   * An example of the 'base' argument is "http://example.com/all_posts.php%_%"
4906   * and the '%_%' is required. The '%_%' will be replaced by the contents of in
4907   * the 'format' argument. An example for the 'format' argument is "?page=%#%"
4908   * and the '%#%' is also required. The '%#%' will be replaced with the page
4909   * number.
4910   *
4911   * You can include the previous and next links in the list by setting the
4912   * 'prev_next' argument to true, which it is by default. You can set the
4913   * previous text, by using the 'prev_text' argument. You can set the next text
4914   * by setting the 'next_text' argument.
4915   *
4916   * If the 'show_all' argument is set to true, then it will show all of the pages
4917   * instead of a short list of the pages near the current page. By default, the
4918   * 'show_all' is set to false and controlled by the 'end_size' and 'mid_size'
4919   * arguments. The 'end_size' argument is how many numbers on either the start
4920   * and the end list edges, by default is 1. The 'mid_size' argument is how many
4921   * numbers to either side of current page, but not including current page.
4922   *
4923   * It is possible to add query vars to the link by using the 'add_args' argument
4924   * and see add_query_arg() for more information.
4925   *
4926   * The 'before_page_number' and 'after_page_number' arguments allow users to
4927   * augment the links themselves. Typically this might be to add context to the
4928   * numbered links so that screen reader users understand what the links are for.
4929   * The text strings are added before and after the page number - within the
4930   * anchor tag.
4931   *
4932   * @since 2.1.0
4933   * @since 4.9.0 Added the `aria_current` argument.
4934   *
4935   * @global WP_Query   $wp_query   WordPress Query object.
4936   * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
4937   *
4938   * @param string|array $args {
4939   *     Optional. Array or string of arguments for generating paginated links for archives.
4940   *
4941   *     @type string $base               Base of the paginated url. Default empty.
4942   *     @type string $format             Format for the pagination structure. Default empty.
4943   *     @type int    $total              The total amount of pages. Default is the value WP_Query's
4944   *                                      `max_num_pages` or 1.
4945   *     @type int    $current            The current page number. Default is 'paged' query var or 1.
4946   *     @type string $aria_current       The value for the aria-current attribute. Possible values are 'page',
4947   *                                      'step', 'location', 'date', 'time', 'true', 'false'. Default is 'page'.
4948   *     @type bool   $show_all           Whether to show all pages. Default false.
4949   *     @type int    $end_size           How many numbers on either the start and the end list edges.
4950   *                                      Default 1.
4951   *     @type int    $mid_size           How many numbers to either side of the current pages. Default 2.
4952   *     @type bool   $prev_next          Whether to include the previous and next links in the list. Default true.
4953   *     @type string $prev_text          The previous page text. Default '&laquo; Previous'.
4954   *     @type string $next_text          The next page text. Default 'Next &raquo;'.
4955   *     @type string $type               Controls format of the returned value. Possible values are 'plain',
4956   *                                      'array' and 'list'. Default is 'plain'.
4957   *     @type array  $add_args           An array of query args to add. Default false.
4958   *     @type string $add_fragment       A string to append to each link. Default empty.
4959   *     @type string $before_page_number A string to appear before the page number. Default empty.
4960   *     @type string $after_page_number  A string to append after the page number. Default empty.
4961   * }
4962   * @return string|string[]|null String of page links or array of page links, depending on 'type' argument.
4963   *                              Null if total number of pages is less than 2.
4964   *
4965   * @phpstan-return (
4966   *     $args is array{ total: int<min, 1>, ... }
4967   *         ? null
4968   *         : (
4969   *             $args is array{ total: int<2, max>, ... }
4970   *                 ? ( $args is array{ type: 'array', ... } ? list<string> : string )
4971   *                 : ( $args is array{ type: 'array', ... } ? list<string> : string )|null
4972   *         )
4973   * )
4974   */
4975  function paginate_links( $args = '' ) {
4976      global $wp_query, $wp_rewrite;
4977  
4978      // Setting up default values based on the current URL.
4979      $pagenum_link = html_entity_decode( get_pagenum_link() );
4980      $url_parts    = explode( '?', $pagenum_link );
4981  
4982      // Get max pages and current page out of the current query, if available.
4983      $total   = $wp_query->max_num_pages ?? 1;
4984      $current = get_query_var( 'paged' ) ? (int) get_query_var( 'paged' ) : 1;
4985  
4986      /*
4987       * Ensures sites not using trailing slashes get links in the form
4988       * `/page/2` rather than `/page/2/`. On these sites, linking to the
4989       * URL with a trailing slash will result in a 301 redirect from the
4990       * incorrect URL to the correctly formatted one. This presents an
4991       * unnecessary performance hit.
4992       */
4993      if ( $wp_rewrite->using_permalinks() && ! $wp_rewrite->use_trailing_slashes ) {
4994          $pagenum_link = untrailingslashit( $url_parts[0] );
4995      } else {
4996          $pagenum_link = trailingslashit( $url_parts[0] );
4997      }
4998      $pagenum_link .= '%_%';
4999  
5000      // URL base depends on permalink settings.
5001      $format  = $wp_rewrite->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
5002      $format .= $wp_rewrite->using_permalinks() ? user_trailingslashit( $wp_rewrite->pagination_base . '/%#%', 'paged' ) : '?paged=%#%';
5003      if ( $wp_rewrite->using_permalinks() && ! $wp_rewrite->use_trailing_slashes ) {
5004          $format = '/' . ltrim( $format, '/' );
5005      }
5006  
5007      $defaults = array(
5008          'base'               => $pagenum_link, // http://example.com/all_posts.php%_% : %_% is replaced by format (below).
5009          'format'             => $format, // ?page=%#% : %#% is replaced by the page number.
5010          'total'              => $total,
5011          'current'            => $current,
5012          'aria_current'       => 'page',
5013          'show_all'           => false,
5014          'prev_next'          => true,
5015          'prev_text'          => __( '&laquo; Previous' ),
5016          'next_text'          => __( 'Next &raquo;' ),
5017          'end_size'           => 1,
5018          'mid_size'           => 2,
5019          'type'               => 'plain',
5020          'add_args'           => array(), // Array of query args to add.
5021          'add_fragment'       => '',
5022          'before_page_number' => '',
5023          'after_page_number'  => '',
5024      );
5025  
5026      $args = wp_parse_args( $args, $defaults );
5027  
5028      if ( ! is_array( $args['add_args'] ) ) {
5029          $args['add_args'] = array();
5030      }
5031  
5032      // Merge additional query vars found in the original URL into 'add_args' array.
5033      if ( isset( $url_parts[1] ) ) {
5034          // Find the format argument.
5035          $format       = explode( '?', str_replace( '%_%', $args['format'], $args['base'] ) );
5036          $format_query = $format[1] ?? '';
5037          wp_parse_str( $format_query, $format_args );
5038  
5039          // Find the query args of the requested URL.
5040          wp_parse_str( $url_parts[1], $url_query_args );
5041  
5042          // Remove the format argument from the array of query arguments, to avoid overwriting custom format.
5043          foreach ( $format_args as $format_arg => $format_arg_value ) {
5044              unset( $url_query_args[ $format_arg ] );
5045          }
5046  
5047          $args['add_args'] = array_merge( $args['add_args'], urlencode_deep( $url_query_args ) );
5048      }
5049  
5050      // Who knows what else people pass in $args.
5051      $total = (int) $args['total'];
5052      if ( $total < 2 ) {
5053          return null;
5054      }
5055      $current  = (int) $args['current'];
5056      $end_size = (int) $args['end_size']; // Out of bounds? Make it the default.
5057      if ( $end_size < 1 ) {
5058          $end_size = 1;
5059      }
5060      $mid_size = (int) $args['mid_size'];
5061      if ( $mid_size < 0 ) {
5062          $mid_size = 2;
5063      }
5064  
5065      $add_args   = $args['add_args'];
5066      $r          = '';
5067      $page_links = array();
5068      $dots       = false;
5069  
5070      if ( $args['prev_next'] && $current && 1 < $current ) :
5071          $link = str_replace( '%_%', 2 === $current ? '' : $args['format'], $args['base'] );
5072          $link = str_replace( '%#%', $current - 1, $link );
5073          if ( $add_args ) {
5074              $link = add_query_arg( $add_args, $link );
5075          }
5076          $link .= $args['add_fragment'];
5077  
5078          $page_links[] = sprintf(
5079              '<a class="prev page-numbers" href="%s">%s</a>',
5080              /**
5081               * Filters the paginated links for the given archive pages.
5082               *
5083               * @since 3.0.0
5084               *
5085               * @param string $link The paginated link URL.
5086               */
5087              esc_url( apply_filters( 'paginate_links', $link ) ),
5088              $args['prev_text']
5089          );
5090      endif;
5091  
5092      for ( $n = 1; $n <= $total; $n++ ) :
5093          if ( $n === $current ) :
5094              $page_links[] = sprintf(
5095                  '<span aria-current="%s" class="page-numbers current">%s</span>',
5096                  esc_attr( $args['aria_current'] ),
5097                  $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number']
5098              );
5099  
5100              $dots = true;
5101          else :
5102              if ( $args['show_all'] || ( $n <= $end_size || ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) || $n > $total - $end_size ) ) :
5103                  $link = str_replace( '%_%', 1 === $n ? '' : $args['format'], $args['base'] );
5104                  $link = str_replace( '%#%', $n, $link );
5105                  if ( $add_args ) {
5106                      $link = add_query_arg( $add_args, $link );
5107                  }
5108                  $link .= $args['add_fragment'];
5109  
5110                  $page_links[] = sprintf(
5111                      '<a class="page-numbers" href="%s">%s</a>',
5112                      /** This filter is documented in wp-includes/general-template.php */
5113                      esc_url( apply_filters( 'paginate_links', $link ) ),
5114                      $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number']
5115                  );
5116  
5117                  $dots = true;
5118              elseif ( $dots && ! $args['show_all'] ) :
5119                  $page_links[] = '<span class="page-numbers dots">' . __( '&hellip;' ) . '</span>';
5120  
5121                  $dots = false;
5122              endif;
5123          endif;
5124      endfor;
5125  
5126      if ( $args['prev_next'] && $current && $current < $total ) :
5127          $link = str_replace( '%_%', $args['format'], $args['base'] );
5128          $link = str_replace( '%#%', $current + 1, $link );
5129          if ( $add_args ) {
5130              $link = add_query_arg( $add_args, $link );
5131          }
5132          $link .= $args['add_fragment'];
5133  
5134          $page_links[] = sprintf(
5135              '<a class="next page-numbers" href="%s">%s</a>',
5136              /** This filter is documented in wp-includes/general-template.php */
5137              esc_url( apply_filters( 'paginate_links', $link ) ),
5138              $args['next_text']
5139          );
5140      endif;
5141  
5142      switch ( $args['type'] ) {
5143          case 'array':
5144              return $page_links;
5145  
5146          case 'list':
5147              $r .= "<ul class='page-numbers'>\n\t<li>";
5148              $r .= implode( "</li>\n\t<li>", $page_links );
5149              $r .= "</li>\n</ul>\n";
5150              break;
5151  
5152          default:
5153              $r = implode( "\n", $page_links );
5154              break;
5155      }
5156  
5157      /**
5158       * Filters the HTML output of paginated links for archives.
5159       *
5160       * @since 5.7.0
5161       *
5162       * @param string $r    HTML output.
5163       * @param array  $args An array of arguments. See paginate_links()
5164       *                     for information on accepted arguments.
5165       */
5166      $r = apply_filters( 'paginate_links_output', $r, $args );
5167  
5168      return $r;
5169  }
5170  
5171  /**
5172   * Registers an admin color scheme css file.
5173   *
5174   * Allows a plugin to register a new admin color scheme. For example:
5175   *
5176   *     wp_admin_css_color( 'classic', __( 'Classic' ), admin_url( "css/colors-classic.css" ), array(
5177   *         '#07273E', '#14568A', '#D54E21', '#2683AE'
5178   *     ) );
5179   *
5180   * @since 2.5.0
5181   *
5182   * @global array $_wp_admin_css_colors
5183   *
5184   * @param string $key    The unique key for this theme.
5185   * @param string $name   The name of the theme.
5186   * @param string $url    The URL of the CSS file containing the color scheme.
5187   * @param array  $colors Optional. An array of CSS color definition strings which are used
5188   *                       to give the user a feel for the theme.
5189   * @param array  $icons {
5190   *     Optional. CSS color definitions used to color any SVG icons.
5191   *
5192   *     @type string $base    SVG icon base color.
5193   *     @type string $focus   SVG icon color on focus.
5194   *     @type string $current SVG icon color of current admin menu link.
5195   * }
5196   */
5197  function wp_admin_css_color( $key, $name, $url, $colors = array(), $icons = array() ) {
5198      global $_wp_admin_css_colors;
5199  
5200      if ( ! isset( $_wp_admin_css_colors ) ) {
5201          $_wp_admin_css_colors = array();
5202      }
5203  
5204      $_wp_admin_css_colors[ $key ] = (object) array(
5205          'name'        => $name,
5206          'url'         => $url,
5207          'colors'      => $colors,
5208          'icon_colors' => $icons,
5209      );
5210  }
5211  
5212  /**
5213   * Registers the default admin color schemes.
5214   *
5215   * Registers the initial set of eight color schemes in the Profile section
5216   * of the dashboard which allows for styling the admin menu and toolbar.
5217   *
5218   * @see wp_admin_css_color()
5219   *
5220   * @since 3.0.0
5221   */
5222  function register_admin_color_schemes() {
5223      $suffix  = is_rtl() ? '-rtl' : '';
5224      $suffix .= SCRIPT_DEBUG ? '' : '.min';
5225  
5226      wp_admin_css_color(
5227          'modern',
5228          _x( 'Default', 'admin color scheme' ),
5229          admin_url( "css/colors/modern/colors$suffix.css" ),
5230          array( '#1e1e1e', '#3858e9', '#7b90ff' ),
5231          array(
5232              'base'    => '#f3f1f1',
5233              'focus'   => '#fff',
5234              'current' => '#fff',
5235          )
5236      );
5237  
5238      wp_admin_css_color(
5239          'fresh',
5240          _x( 'Fresh', 'admin color scheme' ),
5241          false,
5242          array( '#1d2327', '#2c3338', '#2271b1', '#72aee6' ),
5243          array(
5244              'base'    => '#a7aaad',
5245              'focus'   => '#72aee6',
5246              'current' => '#fff',
5247          )
5248      );
5249  
5250      wp_admin_css_color(
5251          'light',
5252          _x( 'Light', 'admin color scheme' ),
5253          admin_url( "css/colors/light/colors$suffix.css" ),
5254          array( '#e5e5e5', '#6a6a6a', '#c64606', '#007cba' ),
5255          array(
5256              'base'    => '#999',
5257              'focus'   => '#ccc',
5258              'current' => '#ccc',
5259          )
5260      );
5261  
5262      wp_admin_css_color(
5263          'blue',
5264          _x( 'Blue', 'admin color scheme' ),
5265          admin_url( "css/colors/blue/colors$suffix.css" ),
5266          array( '#183751', '#245278', '#437aa8', '#e1a948' ),
5267          array(
5268              'base'    => '#e5f8ff',
5269              'focus'   => '#fff',
5270              'current' => '#fff',
5271          )
5272      );
5273  
5274      wp_admin_css_color(
5275          'midnight',
5276          _x( 'Midnight', 'admin color scheme' ),
5277          admin_url( "css/colors/midnight/colors$suffix.css" ),
5278          array( '#232a2e', '#333c42', '#69a8bb', '#cf4339' ),
5279          array(
5280              'base'    => '#f1f2f3',
5281              'focus'   => '#fff',
5282              'current' => '#fff',
5283          )
5284      );
5285  
5286      wp_admin_css_color(
5287          'sunrise',
5288          _x( 'Sunrise', 'admin color scheme' ),
5289          admin_url( "css/colors/sunrise/colors$suffix.css" ),
5290          array( '#6f2724', '#8a312d', '#ad631e', '#ccaf0b' ),
5291          array(
5292              'base'    => '#f3f1f1',
5293              'focus'   => '#fff',
5294              'current' => '#fff',
5295          )
5296      );
5297  
5298      wp_admin_css_color(
5299          'ectoplasm',
5300          _x( 'Ectoplasm', 'admin color scheme' ),
5301          admin_url( "css/colors/ectoplasm/colors$suffix.css" ),
5302          array( '#392751', '#4a3369', '#646c3e', '#d46f15' ),
5303          array(
5304              'base'    => '#ece6f6',
5305              'focus'   => '#fff',
5306              'current' => '#fff',
5307          )
5308      );
5309  
5310      wp_admin_css_color(
5311          'ocean',
5312          _x( 'Ocean', 'admin color scheme' ),
5313          admin_url( "css/colors/ocean/colors$suffix.css" ),
5314          array( '#2b3f44', '#39535a', '#567958', '#aa9d88' ),
5315          array(
5316              'base'    => '#f2fcff',
5317              'focus'   => '#fff',
5318              'current' => '#fff',
5319          )
5320      );
5321  
5322      wp_admin_css_color(
5323          'coffee',
5324          _x( 'Coffee', 'admin color scheme' ),
5325          admin_url( "css/colors/coffee/colors$suffix.css" ),
5326          array( '#382e27', '#5c4c40', '#916745', '#9ea476' ),
5327          array(
5328              'base'    => '#f3f2f1',
5329              'focus'   => '#fff',
5330              'current' => '#fff',
5331          )
5332      );
5333  }
5334  
5335  /**
5336   * Displays the URL of a WordPress admin CSS file.
5337   *
5338   * @see WP_Styles::_css_href() and its {@see 'style_loader_src'} filter.
5339   *
5340   * @since 2.3.0
5341   *
5342   * @param string $file file relative to wp-admin/ without its ".css" extension.
5343   * @return string
5344   */
5345  function wp_admin_css_uri( $file = 'wp-admin' ) {
5346      if ( defined( 'WP_INSTALLING' ) ) {
5347          $_file = "./$file.css";
5348      } else {
5349          $_file = admin_url( "$file.css" );
5350      }
5351      $_file = add_query_arg( 'version', get_bloginfo( 'version' ), $_file );
5352  
5353      /**
5354       * Filters the URI of a WordPress admin CSS file.
5355       *
5356       * @since 2.3.0
5357       *
5358       * @param string $_file Relative path to the file with query arguments attached.
5359       * @param string $file  Relative path to the file, minus its ".css" extension.
5360       */
5361      return apply_filters( 'wp_admin_css_uri', $_file, $file );
5362  }
5363  
5364  /**
5365   * Enqueues or directly prints a stylesheet link to the specified CSS file.
5366   *
5367   * "Intelligently" decides to enqueue or to print the CSS file. If the
5368   * {@see 'wp_print_styles'} action has *not* yet been called, the CSS file will be
5369   * enqueued. If the {@see 'wp_print_styles'} action has been called, the CSS link will
5370   * be printed. Printing may be forced by passing true as the $force_echo
5371   * (second) parameter.
5372   *
5373   * For backward compatibility with WordPress 2.3 calling method: If the $file
5374   * (first) parameter does not correspond to a registered CSS file, we assume
5375   * $file is a file relative to wp-admin/ without its ".css" extension. A
5376   * stylesheet link to that generated URL is printed.
5377   *
5378   * @since 2.3.0
5379   *
5380   * @param string $file       Optional. Style handle name or file name (without ".css" extension) relative
5381   *                           to wp-admin/. Defaults to 'wp-admin'.
5382   * @param bool   $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
5383   */
5384  function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
5385      // For backward compatibility.
5386      $handle = str_starts_with( $file, 'css/' ) ? substr( $file, 4 ) : $file;
5387  
5388      if ( wp_styles()->query( $handle ) ) {
5389          if ( $force_echo || did_action( 'wp_print_styles' ) ) {
5390              // We already printed the style queue. Print this one immediately.
5391              wp_print_styles( $handle );
5392          } else {
5393              // Add to style queue.
5394              wp_enqueue_style( $handle );
5395          }
5396          return;
5397      }
5398  
5399      $stylesheet_link = sprintf(
5400          "<link rel='stylesheet' href='%s' />\n",
5401          esc_url( wp_admin_css_uri( $file ) )
5402      );
5403  
5404      /**
5405       * Filters the stylesheet link to the specified CSS file.
5406       *
5407       * If the site is set to display right-to-left, the RTL stylesheet link
5408       * will be used instead.
5409       *
5410       * @since 2.3.0
5411       * @param string $stylesheet_link HTML link element for the stylesheet.
5412       * @param string $file            Style handle name or filename (without ".css" extension)
5413       *                                relative to wp-admin/. Defaults to 'wp-admin'.
5414       */
5415      echo apply_filters( 'wp_admin_css', $stylesheet_link, $file );
5416  
5417      if ( function_exists( 'is_rtl' ) && is_rtl() ) {
5418          $rtl_stylesheet_link = sprintf(
5419              "<link rel='stylesheet' href='%s' />\n",
5420              esc_url( wp_admin_css_uri( "$file-rtl" ) )
5421          );
5422  
5423          /** This filter is documented in wp-includes/general-template.php */
5424          echo apply_filters( 'wp_admin_css', $rtl_stylesheet_link, "$file-rtl" );
5425      }
5426  }
5427  
5428  /**
5429   * Enqueues the default ThickBox js and css.
5430   *
5431   * If any of the settings need to be changed, this can be done with another js
5432   * file similar to media-upload.js. That file should
5433   * require array('thickbox') to ensure it is loaded after.
5434   *
5435   * @since 2.5.0
5436   */
5437  function add_thickbox() {
5438      wp_enqueue_script( 'thickbox' );
5439      wp_enqueue_style( 'thickbox' );
5440  
5441      if ( is_network_admin() ) {
5442          add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
5443      }
5444  }
5445  
5446  /**
5447   * Displays the XHTML generator that is generated on the wp_head hook.
5448   *
5449   * See {@see 'wp_head'}.
5450   *
5451   * @since 2.5.0
5452   */
5453  function wp_generator() {
5454      /**
5455       * Filters the output of the XHTML generator tag.
5456       *
5457       * @since 2.5.0
5458       *
5459       * @param string $generator_type The XHTML generator.
5460       */
5461      the_generator( apply_filters( 'wp_generator_type', 'xhtml' ) );
5462  }
5463  
5464  /**
5465   * Displays the generator XML or Comment for RSS, ATOM, etc.
5466   *
5467   * Returns the correct generator type for the requested output format. Allows
5468   * for a plugin to filter generators overall the {@see 'the_generator'} filter.
5469   *
5470   * @since 2.5.0
5471   *
5472   * @param string $type The type of generator to output - (html|xhtml|atom|rss2|rdf|comment|export).
5473   */
5474  function the_generator( $type ) {
5475      /**
5476       * Filters the output of the XHTML generator tag, for display.
5477       *
5478       * @since 2.5.0
5479       *
5480       * @param string $generator_type The generator output.
5481       * @param string $type           The type of generator to output. Accepts 'html',
5482       *                               'xhtml', 'atom', 'rss2', 'rdf', 'comment', 'export'.
5483       */
5484      echo apply_filters( 'the_generator', get_the_generator( $type ), $type ) . "\n";
5485  }
5486  
5487  /**
5488   * Creates the generator XML or Comment for RSS, ATOM, etc.
5489   *
5490   * Returns the correct generator type for the requested output format. Allows
5491   * for a plugin to filter generators on an individual basis using the
5492   * {@see 'get_the_generator_$type'} filter.
5493   *
5494   * @since 2.5.0
5495   *
5496   * @param string $type The type of generator to return - (html|xhtml|atom|rss2|rdf|comment|export).
5497   * @return string|null The HTML content for the generator.
5498   */
5499  function get_the_generator( $type = '' ) {
5500      if ( empty( $type ) ) {
5501  
5502          $current_filter = current_filter();
5503          if ( empty( $current_filter ) ) {
5504              return null;
5505          }
5506  
5507          switch ( $current_filter ) {
5508              case 'rss2_head':
5509              case 'commentsrss2_head':
5510                  $type = 'rss2';
5511                  break;
5512              case 'rss_head':
5513              case 'opml_head':
5514                  $type = 'comment';
5515                  break;
5516              case 'rdf_header':
5517                  $type = 'rdf';
5518                  break;
5519              case 'atom_head':
5520              case 'comments_atom_head':
5521              case 'app_head':
5522                  $type = 'atom';
5523                  break;
5524          }
5525      }
5526  
5527      switch ( $type ) {
5528          case 'html':
5529              $gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '">';
5530              break;
5531          case 'xhtml':
5532              $gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '" />';
5533              break;
5534          case 'atom':
5535              $gen = '<generator uri="https://wordpress.org/" version="' . esc_attr( get_bloginfo_rss( 'version' ) ) . '">WordPress</generator>';
5536              break;
5537          case 'rss2':
5538              $gen = '<generator>' . sanitize_url( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '</generator>';
5539              break;
5540          case 'rdf':
5541              $gen = '<admin:generatorAgent rdf:resource="' . sanitize_url( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '" />';
5542              break;
5543          case 'comment':
5544              $gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo( 'version' ) ) . '" -->';
5545              break;
5546          case 'export':
5547              $gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo_rss( 'version' ) ) . '" created="' . gmdate( 'Y-m-d H:i' ) . '" -->';
5548              break;
5549      }
5550  
5551      /**
5552       * Filters the HTML for the retrieved generator type.
5553       *
5554       * The dynamic portion of the hook name, `$type`, refers to the generator type.
5555       *
5556       * Possible hook names include:
5557       *
5558       *  - `get_the_generator_atom`
5559       *  - `get_the_generator_comment`
5560       *  - `get_the_generator_export`
5561       *  - `get_the_generator_html`
5562       *  - `get_the_generator_rdf`
5563       *  - `get_the_generator_rss2`
5564       *  - `get_the_generator_xhtml`
5565       *
5566       * @since 2.5.0
5567       *
5568       * @param string $gen  The HTML markup output to wp_head().
5569       * @param string $type The type of generator. Accepts 'html', 'xhtml', 'atom',
5570       *                     'rss2', 'rdf', 'comment', 'export'.
5571       */
5572      return apply_filters( "get_the_generator_{$type}", $gen, $type );
5573  }
5574  
5575  /**
5576   * Outputs the HTML checked attribute.
5577   *
5578   * Compares the first two arguments and if identical marks as checked.
5579   *
5580   * @since 1.0.0
5581   *
5582   * @param mixed $checked One of the values to compare.
5583   * @param mixed $current Optional. The other value to compare if not just true.
5584   *                       Default true.
5585   * @param bool  $display Optional. Whether to echo or just return the string.
5586   *                       Default true.
5587   * @return string HTML attribute or empty string.
5588   */
5589  function checked( $checked, $current = true, $display = true ) {
5590      return __checked_selected_helper( $checked, $current, $display, 'checked' );
5591  }
5592  
5593  /**
5594   * Outputs the HTML selected attribute.
5595   *
5596   * Compares the first two arguments and if identical marks as selected.
5597   *
5598   * @since 1.0.0
5599   *
5600   * @param mixed $selected One of the values to compare.
5601   * @param mixed $current  Optional. The other value to compare if not just true.
5602   *                        Default true.
5603   * @param bool  $display  Optional. Whether to echo or just return the string.
5604   *                        Default true.
5605   * @return string HTML attribute or empty string.
5606   */
5607  function selected( $selected, $current = true, $display = true ) {
5608      return __checked_selected_helper( $selected, $current, $display, 'selected' );
5609  }
5610  
5611  /**
5612   * Outputs the HTML disabled attribute.
5613   *
5614   * Compares the first two arguments and if identical marks as disabled.
5615   *
5616   * @since 3.0.0
5617   *
5618   * @param mixed $disabled One of the values to compare.
5619   * @param mixed $current  Optional. The other value to compare if not just true.
5620   *                        Default true.
5621   * @param bool  $display  Optional. Whether to echo or just return the string.
5622   *                        Default true.
5623   * @return string HTML attribute or empty string.
5624   */
5625  function disabled( $disabled, $current = true, $display = true ) {
5626      return __checked_selected_helper( $disabled, $current, $display, 'disabled' );
5627  }
5628  
5629  /**
5630   * Outputs the HTML readonly attribute.
5631   *
5632   * Compares the first two arguments and if identical marks as readonly.
5633   *
5634   * @since 5.9.0
5635   *
5636   * @param mixed $readonly_value One of the values to compare.
5637   * @param mixed $current        Optional. The other value to compare if not just true.
5638   *                              Default true.
5639   * @param bool  $display        Optional. Whether to echo or just return the string.
5640   *                              Default true.
5641   * @return string HTML attribute or empty string.
5642   */
5643  function wp_readonly( $readonly_value, $current = true, $display = true ) {
5644      return __checked_selected_helper( $readonly_value, $current, $display, 'readonly' );
5645  }
5646  
5647  /*
5648   * Include a compat `readonly()` function on PHP < 8.1. Since PHP 8.1,
5649   * `readonly` is a reserved keyword and cannot be used as a function name.
5650   * In order to avoid PHP parser errors, this function was extracted
5651   * to a separate file and is only included conditionally on PHP < 8.1.
5652   */
5653  if ( PHP_VERSION_ID < 80100 ) {
5654      require_once  __DIR__ . '/php-compat/readonly.php';
5655  }
5656  
5657  /**
5658   * Private helper function for checked, selected, disabled and readonly.
5659   *
5660   * Compares the first two arguments and if identical marks as `$type`.
5661   *
5662   * @since 2.8.0
5663   * @access private
5664   *
5665   * @param mixed  $helper  One of the values to compare.
5666   * @param mixed  $current The other value to compare if not just true.
5667   * @param bool   $display Whether to echo or just return the string.
5668   * @param string $type    The type of checked|selected|disabled|readonly we are doing.
5669   * @return string HTML attribute or empty string.
5670   */
5671  function __checked_selected_helper( $helper, $current, $display, $type ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionDoubleUnderscore,PHPCompatibility.FunctionNameRestrictions.ReservedFunctionNames.FunctionDoubleUnderscore
5672      if ( (string) $helper === (string) $current ) {
5673          $result = " $type='$type'";
5674      } else {
5675          $result = '';
5676      }
5677  
5678      if ( $display ) {
5679          echo $result;
5680      }
5681  
5682      return $result;
5683  }
5684  
5685  /**
5686   * Assigns a visual indicator for required form fields.
5687   *
5688   * @since 6.1.0
5689   *
5690   * @return string Indicator glyph wrapped in a `span` tag.
5691   */
5692  function wp_required_field_indicator() {
5693      /* translators: Character to identify required form fields. */
5694      $glyph     = __( '*' );
5695      $indicator = '<span class="required">' . esc_html( $glyph ) . '</span>';
5696  
5697      /**
5698       * Filters the markup for a visual indicator of required form fields.
5699       *
5700       * @since 6.1.0
5701       *
5702       * @param string $indicator Markup for the indicator element.
5703       */
5704      return apply_filters( 'wp_required_field_indicator', $indicator );
5705  }
5706  
5707  /**
5708   * Creates a message to explain required form fields.
5709   *
5710   * @since 6.1.0
5711   *
5712   * @return string Message text and glyph wrapped in a `span` tag.
5713   */
5714  function wp_required_field_message() {
5715      $message = sprintf(
5716          '<span class="required-field-message">%s</span>',
5717          /* translators: %s: Asterisk symbol (*). */
5718          sprintf( __( 'Required fields are marked %s' ), wp_required_field_indicator() )
5719      );
5720  
5721      /**
5722       * Filters the message to explain required form fields.
5723       *
5724       * @since 6.1.0
5725       *
5726       * @param string $message Message text and glyph wrapped in a `span` tag.
5727       */
5728      return apply_filters( 'wp_required_field_message', $message );
5729  }
5730  
5731  /**
5732   * Default settings for heartbeat.
5733   *
5734   * Outputs the nonce used in the heartbeat XHR.
5735   *
5736   * @since 3.6.0
5737   *
5738   * @param array $settings
5739   * @return array Heartbeat settings.
5740   */
5741  function wp_heartbeat_settings( $settings ) {
5742      if ( ! is_admin() ) {
5743          $settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );
5744      }
5745  
5746      if ( is_user_logged_in() ) {
5747          $settings['nonce'] = wp_create_nonce( 'heartbeat-nonce' );
5748      }
5749  
5750      return $settings;
5751  }


Generated : Mon Oct 5 08:20:36 2026 Cross-referenced by PHPXref