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

   1  <?php
   2  /**
   3   * Comment template functions
   4   *
   5   * These functions are meant to live inside of the WordPress loop.
   6   *
   7   * @package WordPress
   8   * @subpackage Template
   9   */
  10  
  11  /**
  12   * Retrieves the author of the current comment.
  13   *
  14   * If the comment has an empty comment_author field, then 'Anonymous' person is
  15   * assumed.
  16   *
  17   * @since 1.5.0
  18   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
  19   *
  20   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to retrieve the author.
  21   *                                   Default current comment.
  22   * @return string The comment author
  23   */
  24  function get_comment_author( $comment_id = 0 ) {
  25      $comment = get_comment( $comment_id );
  26  
  27      if ( ! empty( $comment->comment_ID ) ) {
  28          $comment_id = $comment->comment_ID;
  29      } elseif ( is_scalar( $comment_id ) ) {
  30          $comment_id = (string) $comment_id;
  31      } else {
  32          $comment_id = '0';
  33      }
  34  
  35      if ( empty( $comment->comment_author ) ) {
  36          $user = ! empty( $comment->user_id ) ? get_userdata( $comment->user_id ) : false;
  37          if ( $user ) {
  38              $comment_author = $user->display_name;
  39          } else {
  40              $comment_author = __( 'Anonymous' );
  41          }
  42      } else {
  43          $comment_author = $comment->comment_author;
  44      }
  45  
  46      /**
  47       * Filters the returned comment author name.
  48       *
  49       * @since 1.5.0
  50       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
  51       *
  52       * @param string     $comment_author The comment author's username.
  53       * @param string     $comment_id     The comment ID as a numeric string.
  54       * @param WP_Comment $comment        The comment object.
  55       */
  56      return apply_filters( 'get_comment_author', $comment_author, $comment_id, $comment );
  57  }
  58  
  59  /**
  60   * Displays the author of the current comment.
  61   *
  62   * @since 0.71
  63   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
  64   *
  65   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to print the author.
  66   *                                   Default current comment.
  67   */
  68  function comment_author( $comment_id = 0 ) {
  69      $comment = get_comment( $comment_id );
  70  
  71      $comment_author = get_comment_author( $comment );
  72  
  73      /**
  74       * Filters the comment author's name for display.
  75       *
  76       * @since 1.2.0
  77       * @since 4.1.0 The `$comment_id` parameter was added.
  78       *
  79       * @param string $comment_author The comment author's username.
  80       * @param string $comment_id     The comment ID as a numeric string.
  81       */
  82      echo apply_filters( 'comment_author', $comment_author, $comment->comment_ID );
  83  }
  84  
  85  /**
  86   * Retrieves the email of the author of the current comment.
  87   *
  88   * @since 1.5.0
  89   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
  90   *
  91   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to get the author's email.
  92   *                                   Default current comment.
  93   * @return string The current comment author's email
  94   */
  95  function get_comment_author_email( $comment_id = 0 ) {
  96      $comment = get_comment( $comment_id );
  97  
  98      /**
  99       * Filters the comment author's returned email address.
 100       *
 101       * @since 1.5.0
 102       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
 103       *
 104       * @param string     $comment_author_email The comment author's email address.
 105       * @param string     $comment_id           The comment ID as a numeric string.
 106       * @param WP_Comment $comment              The comment object.
 107       */
 108      return apply_filters( 'get_comment_author_email', $comment->comment_author_email, $comment->comment_ID, $comment );
 109  }
 110  
 111  /**
 112   * Displays the email of the author of the current global $comment.
 113   *
 114   * Care should be taken to protect the email address and assure that email
 115   * harvesters do not capture your commenter's email address. Most assume that
 116   * their email address will not appear in raw form on the site. Doing so will
 117   * enable anyone, including those that people don't want to get the email
 118   * address and use it for their own means good and bad.
 119   *
 120   * @since 0.71
 121   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 122   *
 123   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to print the author's email.
 124   *                                   Default current comment.
 125   */
 126  function comment_author_email( $comment_id = 0 ) {
 127      $comment = get_comment( $comment_id );
 128  
 129      $comment_author_email = get_comment_author_email( $comment );
 130  
 131      /**
 132       * Filters the comment author's email for display.
 133       *
 134       * @since 1.2.0
 135       * @since 4.1.0 The `$comment_id` parameter was added.
 136       *
 137       * @param string $comment_author_email The comment author's email address.
 138       * @param string $comment_id           The comment ID as a numeric string.
 139       */
 140      echo apply_filters( 'author_email', $comment_author_email, $comment->comment_ID );
 141  }
 142  
 143  /**
 144   * Displays the HTML email link to the author of the current comment.
 145   *
 146   * Care should be taken to protect the email address and assure that email
 147   * harvesters do not capture your commenter's email address. Most assume that
 148   * their email address will not appear in raw form on the site. Doing so will
 149   * enable anyone, including those that people don't want to get the email
 150   * address and use it for their own means good and bad.
 151   *
 152   * @since 0.71
 153   * @since 4.6.0 Added the `$comment` parameter.
 154   *
 155   * @param string         $link_text Optional. Text to display instead of the comment author's email address.
 156   *                                  Default empty.
 157   * @param string         $before    Optional. Text or HTML to display before the email link. Default empty.
 158   * @param string         $after     Optional. Text or HTML to display after the email link. Default empty.
 159   * @param int|WP_Comment $comment   Optional. Comment ID or WP_Comment object. Default is the current comment.
 160   */
 161  function comment_author_email_link( $link_text = '', $before = '', $after = '', $comment = null ) {
 162      $link = get_comment_author_email_link( $link_text, $before, $after, $comment );
 163      if ( $link ) {
 164          echo $link;
 165      }
 166  }
 167  
 168  /**
 169   * Returns the HTML email link to the author of the current comment.
 170   *
 171   * Care should be taken to protect the email address and assure that email
 172   * harvesters do not capture your commenter's email address. Most assume that
 173   * their email address will not appear in raw form on the site. Doing so will
 174   * enable anyone, including those that people don't want to get the email
 175   * address and use it for their own means good and bad.
 176   *
 177   * @since 2.7.0
 178   * @since 4.6.0 Added the `$comment` parameter.
 179   *
 180   * @param string         $link_text Optional. Text to display instead of the comment author's email address.
 181   *                                  Default empty.
 182   * @param string         $before    Optional. Text or HTML to display before the email link. Default empty.
 183   * @param string         $after     Optional. Text or HTML to display after the email link. Default empty.
 184   * @param int|WP_Comment $comment   Optional. Comment ID or WP_Comment object. Default is the current comment.
 185   * @return string HTML markup for the comment author email link. By default, the email address is obfuscated
 186   *                via the {@see 'comment_email'} filter with antispambot().
 187   */
 188  function get_comment_author_email_link( $link_text = '', $before = '', $after = '', $comment = null ) {
 189      $comment = get_comment( $comment );
 190  
 191      /**
 192       * Filters the comment author's email for display.
 193       *
 194       * Care should be taken to protect the email address and assure that email
 195       * harvesters do not capture your commenter's email address.
 196       *
 197       * @since 1.2.0
 198       * @since 4.1.0 The `$comment` parameter was added.
 199       *
 200       * @param string     $comment_author_email The comment author's email address.
 201       * @param WP_Comment $comment              The comment object.
 202       */
 203      $comment_author_email = apply_filters( 'comment_email', $comment->comment_author_email, $comment );
 204  
 205      if ( ( ! empty( $comment_author_email ) ) && ( '@' !== $comment_author_email ) ) {
 206          $display = ( '' !== $link_text ) ? $link_text : $comment_author_email;
 207  
 208          $comment_author_email_link = $before . sprintf(
 209              '<a href="%1$s">%2$s</a>',
 210              esc_url( 'mailto:' . $comment_author_email ),
 211              esc_html( $display )
 212          ) . $after;
 213  
 214          return $comment_author_email_link;
 215      } else {
 216          return '';
 217      }
 218  }
 219  
 220  /**
 221   * Retrieves the HTML link to the URL of the author of the current comment.
 222   *
 223   * Both get_comment_author_url() and get_comment_author() rely on get_comment(),
 224   * which falls back to the global comment variable if the $comment_id argument is empty.
 225   *
 226   * @since 1.5.0
 227   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 228   *
 229   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to get the author's link.
 230   *                                   Default current comment.
 231   * @return string The comment author name or HTML link for author's URL.
 232   */
 233  function get_comment_author_link( $comment_id = 0 ) {
 234      $comment = get_comment( $comment_id );
 235  
 236      if ( ! empty( $comment->comment_ID ) ) {
 237          $comment_id = $comment->comment_ID;
 238      } elseif ( is_scalar( $comment_id ) ) {
 239          $comment_id = (string) $comment_id;
 240      } else {
 241          $comment_id = '0';
 242      }
 243  
 244      $comment_author_url = get_comment_author_url( $comment );
 245      $comment_author     = get_comment_author( $comment );
 246  
 247      if ( empty( $comment_author_url ) || 'http://' === $comment_author_url ) {
 248          $comment_author_link = $comment_author;
 249      } else {
 250          $rel_parts = array( 'ugc' );
 251          if ( ! wp_is_internal_link( $comment_author_url ) ) {
 252              $rel_parts = array_merge(
 253                  $rel_parts,
 254                  array( 'external', 'nofollow' )
 255              );
 256          }
 257  
 258          /**
 259           * Filters the rel attributes of the comment author's link.
 260           *
 261           * @since 6.2.0
 262           *
 263           * @param string[]   $rel_parts An array of strings representing the rel tags
 264           *                              which will be joined into the anchor's rel attribute.
 265           * @param WP_Comment $comment   The comment object.
 266           */
 267          $rel_parts = apply_filters( 'comment_author_link_rel', $rel_parts, $comment );
 268  
 269          $rel = implode( ' ', $rel_parts );
 270          $rel = esc_attr( $rel );
 271          // Empty space before 'rel' is necessary for later sprintf().
 272          $rel = ! empty( $rel ) ? sprintf( ' rel="%s"', $rel ) : '';
 273  
 274          $comment_author_link = sprintf(
 275              '<a href="%1$s" class="url"%2$s>%3$s</a>',
 276              $comment_author_url,
 277              $rel,
 278              $comment_author
 279          );
 280      }
 281  
 282      /**
 283       * Filters the comment author's link for display.
 284       *
 285       * @since 1.5.0
 286       * @since 4.1.0 The `$comment_author` and `$comment_id` parameters were added.
 287       *
 288       * @param string $comment_author_link The HTML-formatted comment author link.
 289       *                                    Empty for an invalid URL.
 290       * @param string $comment_author      The comment author's username.
 291       * @param string $comment_id          The comment ID as a numeric string.
 292       */
 293      return apply_filters( 'get_comment_author_link', $comment_author_link, $comment_author, $comment_id );
 294  }
 295  
 296  /**
 297   * Displays the HTML link to the URL of the author of the current comment.
 298   *
 299   * @since 0.71
 300   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 301   *
 302   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to print the author's link.
 303   *                                   Default current comment.
 304   */
 305  function comment_author_link( $comment_id = 0 ) {
 306      echo get_comment_author_link( $comment_id );
 307  }
 308  
 309  /**
 310   * Retrieves the IP address of the author of the current comment.
 311   *
 312   * @since 1.5.0
 313   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 314   *
 315   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to get the author's IP address.
 316   *                                   Default current comment.
 317   * @return string Comment author's IP address, or an empty string if it's not available.
 318   */
 319  function get_comment_author_IP( $comment_id = 0 ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
 320      $comment = get_comment( $comment_id );
 321  
 322      /**
 323       * Filters the comment author's returned IP address.
 324       *
 325       * @since 1.5.0
 326       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
 327       *
 328       * @param string     $comment_author_ip The comment author's IP address, or an empty string if it's not available.
 329       * @param string     $comment_id        The comment ID as a numeric string.
 330       * @param WP_Comment $comment           The comment object.
 331       */
 332      return apply_filters( 'get_comment_author_IP', $comment->comment_author_IP, $comment->comment_ID, $comment );  // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase
 333  }
 334  
 335  /**
 336   * Displays the IP address of the author of the current comment.
 337   *
 338   * @since 0.71
 339   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 340   *
 341   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to print the author's IP address.
 342   *                                   Default current comment.
 343   */
 344  function comment_author_IP( $comment_id = 0 ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
 345      echo esc_html( get_comment_author_IP( $comment_id ) );
 346  }
 347  
 348  /**
 349   * Retrieves the URL of the author of the current comment, not linked.
 350   *
 351   * @since 1.5.0
 352   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 353   *
 354   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to get the author's URL.
 355   *                                   Default current comment.
 356   * @return string Comment author URL, if provided, an empty string otherwise.
 357   */
 358  function get_comment_author_url( $comment_id = 0 ) {
 359      $comment = get_comment( $comment_id );
 360  
 361      $comment_author_url = '';
 362      $comment_id         = 0;
 363  
 364      if ( ! empty( $comment ) ) {
 365          $comment_author_url = ( 'http://' === $comment->comment_author_url ) ? '' : $comment->comment_author_url;
 366          $comment_author_url = esc_url( $comment_author_url, array( 'http', 'https' ) );
 367  
 368          $comment_id = $comment->comment_ID;
 369      }
 370  
 371      /**
 372       * Filters the comment author's URL.
 373       *
 374       * @since 1.5.0
 375       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
 376       *
 377       * @param string          $comment_author_url The comment author's URL, or an empty string.
 378       * @param string|int      $comment_id         The comment ID as a numeric string, or 0 if not found.
 379       * @param WP_Comment|null $comment            The comment object, or null if not found.
 380       */
 381      return apply_filters( 'get_comment_author_url', $comment_author_url, $comment_id, $comment );
 382  }
 383  
 384  /**
 385   * Displays the URL of the author of the current comment, not linked.
 386   *
 387   * @since 0.71
 388   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 389   *
 390   * @param int|WP_Comment $comment_id Optional. WP_Comment or the ID of the comment for which to print the author's URL.
 391   *                                   Default current comment.
 392   */
 393  function comment_author_url( $comment_id = 0 ) {
 394      $comment = get_comment( $comment_id );
 395  
 396      $comment_author_url = get_comment_author_url( $comment );
 397  
 398      /**
 399       * Filters the comment author's URL for display.
 400       *
 401       * @since 1.2.0
 402       * @since 4.1.0 The `$comment_id` parameter was added.
 403       *
 404       * @param string $comment_author_url The comment author's URL.
 405       * @param string $comment_id         The comment ID as a numeric string.
 406       */
 407      echo apply_filters( 'comment_url', $comment_author_url, $comment->comment_ID );
 408  }
 409  
 410  /**
 411   * Retrieves the HTML link of the URL of the author of the current comment.
 412   *
 413   * $link_text parameter is only used if the URL does not exist for the comment
 414   * author. If the URL does exist then the URL will be used and the $link_text
 415   * will be ignored.
 416   *
 417   * Encapsulate the HTML link between the $before and $after. So it will appear
 418   * in the order of $before, link, and finally $after.
 419   *
 420   * @since 1.5.0
 421   * @since 4.6.0 Added the `$comment` parameter.
 422   *
 423   * @param string         $link_text Optional. The text to display instead of the comment
 424   *                                  author's email address. Default empty.
 425   * @param string         $before    Optional. The text or HTML to display before the email link.
 426   *                                  Default empty.
 427   * @param string         $after     Optional. The text or HTML to display after the email link.
 428   *                                  Default empty.
 429   * @param int|WP_Comment $comment   Optional. Comment ID or WP_Comment object.
 430   *                                  Default is the current comment.
 431   * @return string The HTML link between the $before and $after parameters.
 432   */
 433  function get_comment_author_url_link( $link_text = '', $before = '', $after = '', $comment = 0 ) {
 434      $comment_author_url = get_comment_author_url( $comment );
 435  
 436      $display = ( '' !== $link_text ) ? $link_text : $comment_author_url;
 437      $display = str_replace( 'http://www.', '', $display );
 438      $display = str_replace( 'http://', '', $display );
 439  
 440      if ( str_ends_with( $display, '/' ) ) {
 441          $display = substr( $display, 0, -1 );
 442      }
 443  
 444      $comment_author_url_link = $before . sprintf(
 445          '<a href="%1$s" rel="external">%2$s</a>',
 446          $comment_author_url,
 447          $display
 448      ) . $after;
 449  
 450      /**
 451       * Filters the comment author's returned URL link.
 452       *
 453       * @since 1.5.0
 454       *
 455       * @param string $comment_author_url_link The HTML-formatted comment author URL link.
 456       */
 457      return apply_filters( 'get_comment_author_url_link', $comment_author_url_link );
 458  }
 459  
 460  /**
 461   * Displays the HTML link of the URL of the author of the current comment.
 462   *
 463   * @since 0.71
 464   * @since 4.6.0 Added the `$comment` parameter.
 465   *
 466   * @param string         $link_text Optional. Text to display instead of the comment author's
 467   *                                  email address. Default empty.
 468   * @param string         $before    Optional. Text or HTML to display before the email link.
 469   *                                  Default empty.
 470   * @param string         $after     Optional. Text or HTML to display after the email link.
 471   *                                  Default empty.
 472   * @param int|WP_Comment $comment   Optional. Comment ID or WP_Comment object.
 473   *                                  Default is the current comment.
 474   */
 475  function comment_author_url_link( $link_text = '', $before = '', $after = '', $comment = 0 ) {
 476      echo get_comment_author_url_link( $link_text, $before, $after, $comment );
 477  }
 478  
 479  /**
 480   * Generates semantic classes for each comment element.
 481   *
 482   * @since 2.7.0
 483   * @since 4.4.0 Added the ability for `$comment` to also accept a WP_Comment object.
 484   *
 485   * @param string|string[] $css_class Optional. One or more classes to add to the class list.
 486   *                                   Default empty.
 487   * @param int|WP_Comment  $comment   Optional. Comment ID or WP_Comment object. Default current comment.
 488   * @param int|WP_Post     $post      Optional. Post ID or WP_Post object. Default current post.
 489   * @param bool            $display   Optional. Whether to print or return the output.
 490   *                                   Default true.
 491   * @return string|void Comment classes if `$display` is false, nothing otherwise.
 492   * @phpstan-return ( $display is true ? void : string )
 493   */
 494  function comment_class( $css_class = '', $comment = null, $post = null, $display = true ) {
 495      // Separates classes with a single space, collates classes for comment DIV.
 496      $css_class = 'class="' . implode( ' ', get_comment_class( $css_class, $comment, $post ) ) . '"';
 497  
 498      if ( $display ) {
 499          echo $css_class;
 500      } else {
 501          return $css_class;
 502      }
 503  }
 504  
 505  /**
 506   * Returns the classes for the comment div as an array.
 507   *
 508   * @since 2.7.0
 509   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 510   *
 511   * @global int $comment_alt
 512   * @global int $comment_depth
 513   * @global int $comment_thread_alt
 514   *
 515   * @param string|string[] $css_class  Optional. One or more classes to add to the class list.
 516   *                                    Default empty.
 517   * @param int|WP_Comment  $comment_id Optional. Comment ID or WP_Comment object. Default current comment.
 518   * @param int|WP_Post     $post       Optional. Post ID or WP_Post object. Default current post.
 519   * @return string[] An array of classes.
 520   */
 521  function get_comment_class( $css_class = '', $comment_id = null, $post = null ) {
 522      global $comment_alt, $comment_depth, $comment_thread_alt;
 523  
 524      $classes = array();
 525  
 526      $comment = get_comment( $comment_id );
 527      if ( ! $comment ) {
 528          return $classes;
 529      }
 530  
 531      // Get the comment type (comment, trackback).
 532      $classes[] = ( empty( $comment->comment_type ) ) ? 'comment' : $comment->comment_type;
 533  
 534      // Add classes for comment authors that are registered users.
 535      $user = $comment->user_id ? get_userdata( $comment->user_id ) : false;
 536      if ( $user ) {
 537          $classes[] = 'byuser';
 538          $classes[] = 'comment-author-' . sanitize_html_class( $user->user_nicename, $comment->user_id );
 539          // For comment authors who are the author of the post.
 540          $_post = get_post( $post );
 541          if ( $_post ) {
 542              if ( $comment->user_id === $_post->post_author ) {
 543                  $classes[] = 'bypostauthor';
 544              }
 545          }
 546      }
 547  
 548      if ( empty( $comment_alt ) ) {
 549          $comment_alt = 0;
 550      }
 551      if ( empty( $comment_depth ) ) {
 552          $comment_depth = 1;
 553      }
 554      if ( empty( $comment_thread_alt ) ) {
 555          $comment_thread_alt = 0;
 556      }
 557  
 558      if ( $comment_alt % 2 ) {
 559          $classes[] = 'odd';
 560          $classes[] = 'alt';
 561      } else {
 562          $classes[] = 'even';
 563      }
 564  
 565      ++$comment_alt;
 566  
 567      // Alt for top-level comments.
 568      if ( 1 === $comment_depth ) {
 569          if ( $comment_thread_alt % 2 ) {
 570              $classes[] = 'thread-odd';
 571              $classes[] = 'thread-alt';
 572          } else {
 573              $classes[] = 'thread-even';
 574          }
 575          ++$comment_thread_alt;
 576      }
 577  
 578      $classes[] = "depth-$comment_depth";
 579  
 580      if ( ! empty( $css_class ) ) {
 581          if ( ! is_array( $css_class ) ) {
 582              $css_class = preg_split( '#\s+#', $css_class );
 583          }
 584          $classes = array_merge( $classes, $css_class );
 585      }
 586  
 587      $classes = array_map( 'esc_attr', $classes );
 588  
 589      /**
 590       * Filters the returned CSS classes for the current comment.
 591       *
 592       * @since 2.7.0
 593       *
 594       * @param string[]    $classes    An array of comment classes.
 595       * @param string[]    $css_class  An array of additional classes added to the list.
 596       * @param string      $comment_id The comment ID as a numeric string.
 597       * @param WP_Comment  $comment    The comment object.
 598       * @param int|WP_Post $post       The post ID or WP_Post object.
 599       */
 600      return apply_filters( 'comment_class', $classes, $css_class, $comment->comment_ID, $comment, $post );
 601  }
 602  
 603  /**
 604   * Retrieves the comment date of the current comment.
 605   *
 606   * @since 1.5.0
 607   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 608   *
 609   * @param string         $format     Optional. PHP date format. Defaults to the 'date_format' option.
 610   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to get the date.
 611   *                                   Default current comment.
 612   * @return string The comment's date.
 613   */
 614  function get_comment_date( $format = '', $comment_id = 0 ) {
 615      $comment = get_comment( $comment_id );
 616  
 617      $_format = ! empty( $format ) ? $format : get_option( 'date_format' );
 618  
 619      $comment_date = mysql2date( $_format, $comment->comment_date );
 620  
 621      /**
 622       * Filters the returned comment date.
 623       *
 624       * @since 1.5.0
 625       *
 626       * @param string|int $comment_date Formatted date string or Unix timestamp.
 627       * @param string     $format       PHP date format.
 628       * @param WP_Comment $comment      The comment object.
 629       */
 630      return apply_filters( 'get_comment_date', $comment_date, $format, $comment );
 631  }
 632  
 633  /**
 634   * Displays the comment date of the current comment.
 635   *
 636   * @since 0.71
 637   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 638   *
 639   * @param string         $format     Optional. PHP date format. Defaults to the 'date_format' option.
 640   * @param int|WP_Comment $comment_id WP_Comment or ID of the comment for which to print the date.
 641   *                                   Default current comment.
 642   */
 643  function comment_date( $format = '', $comment_id = 0 ) {
 644      echo get_comment_date( $format, $comment_id );
 645  }
 646  
 647  /**
 648   * Retrieves the excerpt of the given comment.
 649   *
 650   * Returns a maximum of 20 words with an ellipsis appended if necessary.
 651   *
 652   * @since 1.5.0
 653   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 654   *
 655   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to get the excerpt.
 656   *                                   Default current comment.
 657   * @return string The possibly truncated comment excerpt.
 658   */
 659  function get_comment_excerpt( $comment_id = 0 ) {
 660      $comment = get_comment( $comment_id );
 661  
 662      if ( ! post_password_required( $comment->comment_post_ID ) ) {
 663          $comment_text = strip_tags( str_replace( array( "\n", "\r" ), ' ', $comment->comment_content ) );
 664      } else {
 665          $comment_text = __( 'Password protected' );
 666      }
 667  
 668      /* translators: Maximum number of words used in a comment excerpt. */
 669      $comment_excerpt_length = (int) _x( '20', 'comment_excerpt_length' );
 670  
 671      /**
 672       * Filters the maximum number of words used in the comment excerpt.
 673       *
 674       * @since 4.4.0
 675       *
 676       * @param int $comment_excerpt_length The amount of words you want to display in the comment excerpt.
 677       */
 678      $comment_excerpt_length = apply_filters( 'comment_excerpt_length', $comment_excerpt_length );
 679  
 680      $comment_excerpt = wp_trim_words( $comment_text, $comment_excerpt_length, '&hellip;' );
 681  
 682      /**
 683       * Filters the retrieved comment excerpt.
 684       *
 685       * @since 1.5.0
 686       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
 687       *
 688       * @param string     $comment_excerpt The comment excerpt text.
 689       * @param string     $comment_id      The comment ID as a numeric string.
 690       * @param WP_Comment $comment         The comment object.
 691       */
 692      return apply_filters( 'get_comment_excerpt', $comment_excerpt, $comment->comment_ID, $comment );
 693  }
 694  
 695  /**
 696   * Displays the excerpt of the current comment.
 697   *
 698   * @since 1.2.0
 699   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
 700   *
 701   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to print the excerpt.
 702   *                                   Default current comment.
 703   */
 704  function comment_excerpt( $comment_id = 0 ) {
 705      $comment = get_comment( $comment_id );
 706  
 707      $comment_excerpt = get_comment_excerpt( $comment );
 708  
 709      /**
 710       * Filters the comment excerpt for display.
 711       *
 712       * @since 1.2.0
 713       * @since 4.1.0 The `$comment_id` parameter was added.
 714       *
 715       * @param string $comment_excerpt The comment excerpt text.
 716       * @param string $comment_id      The comment ID as a numeric string.
 717       */
 718      echo apply_filters( 'comment_excerpt', $comment_excerpt, $comment->comment_ID );
 719  }
 720  
 721  /**
 722   * Retrieves the comment ID of the current comment.
 723   *
 724   * @since 1.5.0
 725   *
 726   * @return string The comment ID as a numeric string.
 727   */
 728  function get_comment_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
 729      $comment = get_comment();
 730  
 731      $comment_id = ! empty( $comment->comment_ID ) ? $comment->comment_ID : '0';
 732  
 733      /**
 734       * Filters the returned comment ID.
 735       *
 736       * @since 1.5.0
 737       * @since 4.1.0 The `$comment` parameter was added.
 738       *
 739       * @param string     $comment_id The current comment ID as a numeric string.
 740       * @param WP_Comment $comment    The comment object.
 741       */
 742      return apply_filters( 'get_comment_ID', $comment_id, $comment );  // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase
 743  }
 744  
 745  /**
 746   * Displays the comment ID of the current comment.
 747   *
 748   * @since 0.71
 749   */
 750  function comment_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
 751      echo get_comment_ID();
 752  }
 753  
 754  /**
 755   * Retrieves the link to a given comment.
 756   *
 757   * @since 1.5.0
 758   * @since 4.4.0 Added the ability for `$comment` to also accept a WP_Comment object. Added `$cpage` argument.
 759   *
 760   * @see get_page_of_comment()
 761   *
 762   * @global WP_Rewrite $wp_rewrite      WordPress rewrite component.
 763   * @global bool       $in_comment_loop
 764   *
 765   * @param WP_Comment|int|null $comment Optional. Comment to retrieve. Default current comment.
 766   * @param array               $args {
 767   *     An array of optional arguments to override the defaults.
 768   *
 769   *     @type string     $type      Passed to get_page_of_comment().
 770   *     @type int        $page      Current page of comments, for calculating comment pagination.
 771   *     @type int        $per_page  Per-page value for comment pagination.
 772   *     @type int        $max_depth Passed to get_page_of_comment().
 773   *     @type int|string $cpage     Value to use for the comment's "comment-page" or "cpage" value.
 774   *                                 If provided, this value overrides any value calculated from `$page`
 775   *                                 and `$per_page`.
 776   * }
 777   * @return string The permalink to the given comment.
 778   */
 779  function get_comment_link( $comment = null, $args = array() ) {
 780      global $wp_rewrite, $in_comment_loop;
 781  
 782      $comment = get_comment( $comment );
 783  
 784      // Back-compat.
 785      if ( ! is_array( $args ) ) {
 786          $args = array( 'page' => $args );
 787      }
 788  
 789      $defaults = array(
 790          'type'      => 'all',
 791          'page'      => '',
 792          'per_page'  => '',
 793          'max_depth' => '',
 794          'cpage'     => null,
 795      );
 796  
 797      $args = wp_parse_args( $args, $defaults );
 798  
 799      $comment_link = get_permalink( $comment->comment_post_ID );
 800  
 801      // The 'cpage' param takes precedence.
 802      if ( ! is_null( $args['cpage'] ) ) {
 803          $cpage = $args['cpage'];
 804  
 805          // No 'cpage' is provided, so we calculate one.
 806      } else {
 807          if ( '' === $args['per_page'] && get_option( 'page_comments' ) ) {
 808              $args['per_page'] = get_option( 'comments_per_page' );
 809          }
 810  
 811          if ( empty( $args['per_page'] ) ) {
 812              $args['per_page'] = 0;
 813              $args['page']     = 0;
 814          }
 815  
 816          $cpage = $args['page'];
 817  
 818          if ( '' === $cpage ) {
 819              if ( ! empty( $in_comment_loop ) ) {
 820                  $cpage = (int) get_query_var( 'cpage' );
 821              } else {
 822                  // Requires a database hit, so we only do it when we can't figure out from context.
 823                  $cpage = get_page_of_comment( $comment->comment_ID, $args );
 824              }
 825          }
 826  
 827          /*
 828           * If the default page displays the oldest comments, the permalinks for comments on the default page
 829           * do not need a 'cpage' query var.
 830           */
 831          if ( 'oldest' === get_option( 'default_comments_page' ) && 1 === $cpage ) {
 832              $cpage = '';
 833          }
 834      }
 835  
 836      if ( $cpage && get_option( 'page_comments' ) ) {
 837          if ( $wp_rewrite->using_permalinks() ) {
 838              $comment_link = trailingslashit( $comment_link ) . $wp_rewrite->comments_pagination_base . '-' . $cpage;
 839          } else {
 840              $comment_link = add_query_arg( 'cpage', $cpage, $comment_link );
 841          }
 842      }
 843  
 844      if ( $wp_rewrite->using_permalinks() ) {
 845          $comment_link = user_trailingslashit( $comment_link, 'comment' );
 846      }
 847  
 848      $comment_link = $comment_link . '#comment-' . $comment->comment_ID;
 849  
 850      /**
 851       * Filters the returned single comment permalink.
 852       *
 853       * @since 2.8.0
 854       * @since 4.4.0 Added the `$cpage` parameter.
 855       *
 856       * @see get_page_of_comment()
 857       *
 858       * @param string     $comment_link The comment permalink with '#comment-$id' appended.
 859       * @param WP_Comment $comment      The current comment object.
 860       * @param array      $args         An array of arguments to override the defaults.
 861       * @param int        $cpage        The calculated 'cpage' value.
 862       */
 863      return apply_filters( 'get_comment_link', $comment_link, $comment, $args, $cpage );
 864  }
 865  
 866  /**
 867   * Retrieves the link to the current post comments.
 868   *
 869   * @since 1.5.0
 870   *
 871   * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
 872   * @return string The link to the comments.
 873   */
 874  function get_comments_link( $post = 0 ) {
 875      $hash          = get_comments_number( $post ) ? '#comments' : '#respond';
 876      $comments_link = get_permalink( $post ) . $hash;
 877  
 878      /**
 879       * Filters the returned post comments permalink.
 880       *
 881       * @since 3.6.0
 882       *
 883       * @param string      $comments_link Post comments permalink with '#comments' appended.
 884       * @param int|WP_Post $post          Post ID or WP_Post object.
 885       */
 886      return apply_filters( 'get_comments_link', $comments_link, $post );
 887  }
 888  
 889  /**
 890   * Displays the link to the current post comments.
 891   *
 892   * @since 0.71
 893   *
 894   * @param string $deprecated   Not Used.
 895   * @param string $deprecated_2 Not Used.
 896   *
 897   * @phpstan-param '' $deprecated
 898   * @phpstan-param '' $deprecated_2
 899   */
 900  function comments_link( $deprecated = '', $deprecated_2 = '' ) {
 901      if ( ! empty( $deprecated ) ) {
 902          _deprecated_argument( __FUNCTION__, '0.72' );
 903      }
 904      if ( ! empty( $deprecated_2 ) ) {
 905          _deprecated_argument( __FUNCTION__, '1.3.0' );
 906      }
 907      echo esc_url( get_comments_link() );
 908  }
 909  
 910  /**
 911   * Retrieves the amount of comments a post has.
 912   *
 913   * @since 1.5.0
 914   *
 915   * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is the global `$post`.
 916   * @return string|int If the post exists, a numeric string representing the number of comments
 917   *                    the post has, otherwise 0.
 918   */
 919  function get_comments_number( $post = 0 ) {
 920      $post = get_post( $post );
 921  
 922      $comments_number = $post ? $post->comment_count : 0;
 923      $post_id         = $post ? $post->ID : 0;
 924  
 925      /**
 926       * Filters the returned comment count for a post.
 927       *
 928       * @since 1.5.0
 929       *
 930       * @param string|int $comments_number A string representing the number of comments a post has, otherwise 0.
 931       * @param int        $post_id         Post ID.
 932       */
 933      return apply_filters( 'get_comments_number', $comments_number, $post_id );
 934  }
 935  
 936  /**
 937   * Displays the language string for the number of comments the current post has.
 938   *
 939   * @since 0.71
 940   * @since 5.4.0 The `$deprecated` parameter was changed to `$post`.
 941   *
 942   * @param string|false $zero Optional. Text for no comments. Default false.
 943   * @param string|false $one  Optional. Text for one comment. Default false.
 944   * @param string|false $more Optional. Text for more than one comment. Default false.
 945   * @param int|WP_Post  $post Optional. Post ID or WP_Post object. Default is the global `$post`.
 946   */
 947  function comments_number( $zero = false, $one = false, $more = false, $post = 0 ) {
 948      echo get_comments_number_text( $zero, $one, $more, $post );
 949  }
 950  
 951  /**
 952   * Displays the language string for the number of comments the current post has.
 953   *
 954   * @since 4.0.0
 955   * @since 5.4.0 Added the `$post` parameter to allow using the function outside of the loop.
 956   *
 957   * @param string|false $zero Optional. Text for no comments. Default false.
 958   * @param string|false $one  Optional. Text for one comment. Default false.
 959   * @param string|false $more Optional. Text for more than one comment. Default false.
 960   * @param int|WP_Post  $post Optional. Post ID or WP_Post object. Default is the global `$post`.
 961   * @return string Language string for the number of comments a post has.
 962   */
 963  function get_comments_number_text( $zero = false, $one = false, $more = false, $post = 0 ) {
 964      $comments_number = (int) get_comments_number( $post );
 965  
 966      if ( $comments_number > 1 ) {
 967          if ( false === $more ) {
 968              $comments_number_text = sprintf(
 969                  /* translators: %s: Number of comments. */
 970                  _n( '%s Comment', '%s Comments', $comments_number ),
 971                  number_format_i18n( $comments_number )
 972              );
 973          } else {
 974              // % Comments
 975              /*
 976               * translators: If comment number in your language requires declension,
 977               * translate this to 'on'. Do not translate into your own language.
 978               */
 979              if ( 'on' === _x( 'off', 'Comment number declension: on or off' ) ) {
 980                  $text = preg_replace( '#<span class="screen-reader-text">.+?</span>#', '', $more );
 981                  $text = preg_replace( '/&.+?;/', '', $text ); // Remove HTML entities.
 982                  $text = trim( strip_tags( $text ), '% ' );
 983  
 984                  // Replace '% Comments' with a proper plural form.
 985                  if ( $text && ! preg_match( '/[0-9]+/', $text ) && str_contains( $more, '%' ) ) {
 986                      /* translators: %s: Number of comments. */
 987                      $new_text = _n( '%s Comment', '%s Comments', $comments_number );
 988                      $new_text = trim( sprintf( $new_text, '' ) );
 989  
 990                      $more = str_replace( $text, $new_text, $more );
 991                      if ( ! str_contains( $more, '%' ) ) {
 992                          $more = '% ' . $more;
 993                      }
 994                  }
 995              }
 996  
 997              $comments_number_text = str_replace( '%', number_format_i18n( $comments_number ), $more );
 998          }
 999      } elseif ( 0 === $comments_number ) {
1000          $comments_number_text = ( false === $zero ) ? __( 'No Comments' ) : $zero;
1001      } else { // Must be one.
1002          $comments_number_text = ( false === $one ) ? __( '1 Comment' ) : $one;
1003      }
1004  
1005      /**
1006       * Filters the comments count for display.
1007       *
1008       * @since 1.5.0
1009       *
1010       * @see _n()
1011       *
1012       * @param string $comments_number_text A translatable string formatted based on whether the count
1013       *                                     is equal to 0, 1, or 1+.
1014       * @param int    $comments_number      The number of post comments.
1015       */
1016      return apply_filters( 'comments_number', $comments_number_text, $comments_number );
1017  }
1018  
1019  /**
1020   * Retrieves the text of the current comment.
1021   *
1022   * @since 1.5.0
1023   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
1024   * @since 5.4.0 Added 'In reply to %s.' prefix to child comments in comments feed.
1025   *
1026   * @see Walker_Comment::comment()
1027   *
1028   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to get the text.
1029   *                                   Default current comment.
1030   * @param array          $args       Optional. An array of arguments. Default empty array.
1031   * @return string The comment content.
1032   */
1033  function get_comment_text( $comment_id = 0, $args = array() ) {
1034      $comment = get_comment( $comment_id );
1035  
1036      $comment_text = $comment->comment_content;
1037  
1038      if ( is_comment_feed() && $comment->comment_parent ) {
1039          $parent = get_comment( $comment->comment_parent );
1040          if ( $parent ) {
1041              $parent_link = esc_url( get_comment_link( $parent ) );
1042              $name        = get_comment_author( $parent );
1043  
1044              $comment_text = sprintf(
1045                  /* translators: %s: Comment link. */
1046                  ent2ncr( __( 'In reply to %s.' ) ),
1047                  '<a href="' . $parent_link . '">' . $name . '</a>'
1048              ) . "\n\n" . $comment_text;
1049          }
1050      }
1051  
1052      /**
1053       * Filters the text of a comment.
1054       *
1055       * @since 1.5.0
1056       *
1057       * @see Walker_Comment::comment()
1058       *
1059       * @param string     $comment_text Text of the comment.
1060       * @param WP_Comment $comment      The comment object.
1061       * @param array      $args         An array of arguments.
1062       */
1063      return apply_filters( 'get_comment_text', $comment_text, $comment, $args );
1064  }
1065  
1066  /**
1067   * Displays the text of the current comment.
1068   *
1069   * @since 0.71
1070   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
1071   *
1072   * @see Walker_Comment::comment()
1073   *
1074   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to print the text.
1075   *                                   Default current comment.
1076   * @param array          $args       Optional. An array of arguments. Default empty array.
1077   */
1078  function comment_text( $comment_id = 0, $args = array() ) {
1079      $comment = get_comment( $comment_id );
1080  
1081      $comment_text = get_comment_text( $comment, $args );
1082  
1083      /**
1084       * Filters the text of a comment to be displayed.
1085       *
1086       * @since 1.2.0
1087       *
1088       * @see Walker_Comment::comment()
1089       *
1090       * @param string          $comment_text Text of the comment.
1091       * @param WP_Comment|null $comment      The comment object. Null if not found.
1092       * @param array           $args         An array of arguments.
1093       */
1094      echo apply_filters( 'comment_text', $comment_text, $comment, $args );
1095  }
1096  
1097  /**
1098   * Retrieves the comment time of the current comment.
1099   *
1100   * @since 1.5.0
1101   * @since 6.2.0 Added the `$comment_id` parameter.
1102   *
1103   * @param string         $format     Optional. PHP date format. Defaults to the 'time_format' option.
1104   * @param bool           $gmt        Optional. Whether to use the GMT date. Default false.
1105   * @param bool           $translate  Optional. Whether to translate the time (for use in feeds).
1106   *                                   Default true.
1107   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to get the time.
1108   *                                   Default current comment.
1109   * @return string The formatted time.
1110   */
1111  function get_comment_time( $format = '', $gmt = false, $translate = true, $comment_id = 0 ) {
1112      $comment = get_comment( $comment_id );
1113  
1114      if ( null === $comment ) {
1115          return '';
1116      }
1117  
1118      $comment_date = $gmt ? $comment->comment_date_gmt : $comment->comment_date;
1119  
1120      $_format = ! empty( $format ) ? $format : get_option( 'time_format' );
1121  
1122      $comment_time = mysql2date( $_format, $comment_date, $translate );
1123  
1124      /**
1125       * Filters the returned comment time.
1126       *
1127       * @since 1.5.0
1128       *
1129       * @param string|int $comment_time The comment time, formatted as a date string or Unix timestamp.
1130       * @param string     $format       PHP date format.
1131       * @param bool       $gmt          Whether the GMT date is in use.
1132       * @param bool       $translate    Whether the time is translated.
1133       * @param WP_Comment $comment      The comment object.
1134       */
1135      return apply_filters( 'get_comment_time', $comment_time, $format, $gmt, $translate, $comment );
1136  }
1137  
1138  /**
1139   * Displays the comment time of the current comment.
1140   *
1141   * @since 0.71
1142   * @since 6.2.0 Added the `$comment_id` parameter.
1143   *
1144   * @param string         $format     Optional. PHP time format. Defaults to the 'time_format' option.
1145   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to print the time.
1146   *                                   Default current comment.
1147   */
1148  function comment_time( $format = '', $comment_id = 0 ) {
1149      echo get_comment_time( $format, false, true, $comment_id );
1150  }
1151  
1152  /**
1153   * Retrieves the comment type of the current comment.
1154   *
1155   * @since 1.5.0
1156   * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object.
1157   *
1158   * @param int|WP_Comment $comment_id Optional. WP_Comment or ID of the comment for which to get the type.
1159   *                                   Default current comment.
1160   * @return string The comment type.
1161   */
1162  function get_comment_type( $comment_id = 0 ) {
1163      $comment = get_comment( $comment_id );
1164  
1165      if ( '' === $comment->comment_type ) {
1166          $comment->comment_type = 'comment';
1167      }
1168  
1169      /**
1170       * Filters the returned comment type.
1171       *
1172       * @since 1.5.0
1173       * @since 4.1.0 The `$comment_id` and `$comment` parameters were added.
1174       *
1175       * @param string     $comment_type The type of comment, such as 'comment', 'pingback', or 'trackback'.
1176       * @param string     $comment_id   The comment ID as a numeric string.
1177       * @param WP_Comment $comment      The comment object.
1178       */
1179      return apply_filters( 'get_comment_type', $comment->comment_type, $comment->comment_ID, $comment );
1180  }
1181  
1182  /**
1183   * Displays the comment type of the current comment.
1184   *
1185   * @since 0.71
1186   *
1187   * @param string|false $comment_text   Optional. String to display for comment type. Default false.
1188   * @param string|false $trackback_text Optional. String to display for trackback type. Default false.
1189   * @param string|false $pingback_text  Optional. String to display for pingback type. Default false.
1190   */
1191  function comment_type( $comment_text = false, $trackback_text = false, $pingback_text = false ) {
1192      if ( false === $comment_text ) {
1193          $comment_text = _x( 'Comment', 'noun' );
1194      }
1195      if ( false === $trackback_text ) {
1196          $trackback_text = __( 'Trackback' );
1197      }
1198      if ( false === $pingback_text ) {
1199          $pingback_text = __( 'Pingback' );
1200      }
1201      $type = get_comment_type();
1202      switch ( $type ) {
1203          case 'trackback':
1204              echo $trackback_text;
1205              break;
1206          case 'pingback':
1207              echo $pingback_text;
1208              break;
1209          default:
1210              echo $comment_text;
1211      }
1212  }
1213  
1214  /**
1215   * Retrieves the current post's trackback URL.
1216   *
1217   * There is a check to see if permalink's have been enabled and if so, will
1218   * retrieve the pretty path. If permalinks weren't enabled, the ID of the
1219   * current post is used and appended to the correct page to go to.
1220   *
1221   * @since 1.5.0
1222   *
1223   * @return string The trackback URL after being filtered.
1224   */
1225  function get_trackback_url() {
1226      if ( get_option( 'permalink_structure' ) ) {
1227          $trackback_url = trailingslashit( get_permalink() ) . user_trailingslashit( 'trackback', 'single_trackback' );
1228      } else {
1229          $trackback_url = get_option( 'siteurl' ) . '/wp-trackback.php?p=' . get_the_ID();
1230      }
1231  
1232      /**
1233       * Filters the returned trackback URL.
1234       *
1235       * @since 2.2.0
1236       *
1237       * @param string $trackback_url The trackback URL.
1238       */
1239      return apply_filters( 'trackback_url', $trackback_url );
1240  }
1241  
1242  /**
1243   * Displays the current post's trackback URL.
1244   *
1245   * @since 0.71
1246   * @since 2.5.0 Deprecated the `$deprecated_echo` argument.
1247   *
1248   * @see get_trackback_url()
1249   *
1250   * @param true $deprecated_echo Deprecated. Use {@see get_trackback_url()}. Echo the URL or
1251   *                              return it. Default true.
1252   * @return string|void The trackback URL when `$deprecated_echo` is false, nothing otherwise.
1253   * @phpstan-return ( $deprecated_echo is true ? void : string )
1254   *
1255   * @phpstan-ignore conditionalType.alwaysTrue (Typed `true` to flag the deprecated argument.)
1256   */
1257  function trackback_url( $deprecated_echo = true ) {
1258      if ( true !== $deprecated_echo ) {
1259          _deprecated_argument(
1260              __FUNCTION__,
1261              '2.5.0',
1262              sprintf(
1263                  /* translators: %s: get_trackback_url() */
1264                  __( 'Use %s instead if you do not want the value echoed.' ),
1265                  '<code>get_trackback_url()</code>'
1266              )
1267          );
1268      }
1269  
1270      if ( $deprecated_echo ) {
1271          echo get_trackback_url();
1272      } else {
1273          return get_trackback_url();
1274      }
1275  }
1276  
1277  /**
1278   * Generates and displays the RDF for the trackback information of current post.
1279   *
1280   * Deprecated in 3.0.0, and restored in 3.0.1.
1281   *
1282   * @since 0.71
1283   *
1284   * @param int|string $deprecated Not used (Was $timezone = 0).
1285   *
1286   * @phpstan-param '' $deprecated
1287   */
1288  function trackback_rdf( $deprecated = '' ) {
1289      if ( ! empty( $deprecated ) ) {
1290          _deprecated_argument( __FUNCTION__, '2.5.0' );
1291      }
1292  
1293      if ( isset( $_SERVER['HTTP_USER_AGENT'] ) && false !== stripos( $_SERVER['HTTP_USER_AGENT'], 'W3C_Validator' ) ) {
1294          return;
1295      }
1296  
1297      echo '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
1298              xmlns:dc="http://purl.org/dc/elements/1.1/"
1299              xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
1300          <rdf:Description rdf:about="';
1301      the_permalink();
1302      echo '"' . "\n";
1303      echo '    dc:identifier="';
1304      the_permalink();
1305      echo '"' . "\n";
1306      echo '    dc:title="' . str_replace( '--', '&#x2d;&#x2d;', wptexturize( strip_tags( get_the_title() ) ) ) . '"' . "\n";
1307      echo '    trackback:ping="' . get_trackback_url() . '"' . " />\n";
1308      echo '</rdf:RDF>';
1309  }
1310  
1311  /**
1312   * Determines whether the current post is open for comments.
1313   *
1314   * For more information on this and similar theme functions, check out
1315   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
1316   * Conditional Tags} article in the Theme Developer Handbook.
1317   *
1318   * @since 1.5.0
1319   *
1320   * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
1321   * @return bool True if the comments are open.
1322   */
1323  function comments_open( $post = null ) {
1324      $_post = get_post( $post );
1325  
1326      $post_id       = $_post ? $_post->ID : 0;
1327      $comments_open = ( $_post && ( 'open' === $_post->comment_status ) );
1328  
1329      /**
1330       * Filters whether the current post is open for comments.
1331       *
1332       * @since 2.5.0
1333       *
1334       * @param bool $comments_open Whether the current post is open for comments.
1335       * @param int  $post_id       The post ID.
1336       */
1337      return apply_filters( 'comments_open', $comments_open, $post_id );
1338  }
1339  
1340  /**
1341   * Determines whether the current post is open for pings.
1342   *
1343   * For more information on this and similar theme functions, check out
1344   * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
1345   * Conditional Tags} article in the Theme Developer Handbook.
1346   *
1347   * @since 1.5.0
1348   *
1349   * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
1350   * @return bool True if pings are accepted
1351   */
1352  function pings_open( $post = null ) {
1353      $_post = get_post( $post );
1354  
1355      $post_id    = $_post ? $_post->ID : 0;
1356      $pings_open = ( $_post && ( 'open' === $_post->ping_status ) );
1357  
1358      /**
1359       * Filters whether the current post is open for pings.
1360       *
1361       * @since 2.5.0
1362       *
1363       * @param bool $pings_open Whether the current post is open for pings.
1364       * @param int  $post_id    The post ID.
1365       */
1366      return apply_filters( 'pings_open', $pings_open, $post_id );
1367  }
1368  
1369  /**
1370   * Displays form token for unfiltered comments.
1371   *
1372   * Will only display nonce token if the current user has permissions for
1373   * unfiltered html. Won't display the token for other users.
1374   *
1375   * The function was backported to 2.0.10 and was added to versions 2.1.3 and
1376   * above. Does not exist in versions prior to 2.0.10 in the 2.0 branch and in
1377   * the 2.1 branch, prior to 2.1.3. Technically added in 2.2.0.
1378   *
1379   * Backported to 2.0.10.
1380   *
1381   * @since 2.1.3
1382   */
1383  function wp_comment_form_unfiltered_html_nonce() {
1384      $post    = get_post();
1385      $post_id = $post ? $post->ID : 0;
1386  
1387      if ( current_user_can( 'unfiltered_html' ) ) {
1388          wp_nonce_field( 'unfiltered-html-comment_' . $post_id, '_wp_unfiltered_html_comment_disabled', false );
1389          wp_print_inline_script_tag( "(function(){if(window===window.parent){document.getElementById('_wp_unfiltered_html_comment_disabled').name='_wp_unfiltered_html_comment';}})();\n//# sourceURL=" . rawurlencode( __FUNCTION__ ) );
1390      }
1391  }
1392  
1393  /**
1394   * Loads the comment template specified in $file.
1395   *
1396   * Will not display the comments template if not on single post or page, or if
1397   * the post does not have comments.
1398   *
1399   * Uses the WordPress database object to query for the comments. The comments
1400   * are passed through the {@see 'comments_array'} filter hook with the list of comments
1401   * and the post ID respectively.
1402   *
1403   * The `$file` path is passed through a filter hook called {@see 'comments_template'},
1404   * which includes the template directory and $file combined. Tries the $filtered path
1405   * first and if it fails it will require the default comment template from the
1406   * default theme. If either does not exist, then the WordPress process will be
1407   * halted. It is advised for that reason, that the default theme is not deleted.
1408   *
1409   * Will not try to get the comments if the post has none.
1410   *
1411   * @since 1.5.0
1412   *
1413   * @global WP_Query   $wp_query           WordPress Query object.
1414   * @global WP_Post    $post               Global post object.
1415   * @global wpdb       $wpdb               WordPress database abstraction object.
1416   * @global int        $id
1417   * @global WP_Comment $comment            Global comment object.
1418   * @global string     $user_login
1419   * @global string     $user_identity
1420   * @global bool       $overridden_cpage
1421   * @global bool       $withcomments
1422   * @global string     $wp_stylesheet_path Path to current theme's stylesheet directory.
1423   * @global string     $wp_template_path   Path to current theme's template directory.
1424   *
1425   * @param string $file              Optional. The file to load. Default '/comments.php'.
1426   * @param bool   $separate_comments Optional. Whether to separate the comments by comment type.
1427   *                                  Default false.
1428   */
1429  function comments_template( $file = '/comments.php', $separate_comments = false ) {
1430      global $wp_query, $withcomments, $post, $wpdb, $id, $comment, $user_login, $user_identity, $overridden_cpage, $wp_stylesheet_path, $wp_template_path;
1431  
1432      if ( ! ( is_single() || is_page() || $withcomments ) || empty( $post ) ) {
1433          return;
1434      }
1435  
1436      if ( empty( $file ) ) {
1437          $file = '/comments.php';
1438      }
1439  
1440      $req = get_option( 'require_name_email' );
1441  
1442      /*
1443       * Comment author information fetched from the comment cookies.
1444       */
1445      $commenter = wp_get_current_commenter();
1446  
1447      /*
1448       * The name of the current comment author escaped for use in attributes.
1449       * Escaped by sanitize_comment_cookies().
1450       */
1451      $comment_author = $commenter['comment_author'];
1452  
1453      /*
1454       * The email address of the current comment author escaped for use in attributes.
1455       * Escaped by sanitize_comment_cookies().
1456       */
1457      $comment_author_email = $commenter['comment_author_email'];
1458  
1459      /*
1460       * The URL of the current comment author escaped for use in attributes.
1461       */
1462      $comment_author_url = esc_url( $commenter['comment_author_url'] );
1463  
1464      $comment_args = array(
1465          'orderby'       => 'comment_date_gmt',
1466          'order'         => 'ASC',
1467          'status'        => 'approve',
1468          'post_id'       => $post->ID,
1469          'no_found_rows' => false,
1470      );
1471  
1472      if ( get_option( 'thread_comments' ) ) {
1473          $comment_args['hierarchical'] = 'threaded';
1474      } else {
1475          $comment_args['hierarchical'] = false;
1476      }
1477  
1478      if ( is_user_logged_in() ) {
1479          $comment_args['include_unapproved'] = array( get_current_user_id() );
1480      } else {
1481          $unapproved_email = wp_get_unapproved_comment_author_email();
1482  
1483          if ( $unapproved_email ) {
1484              $comment_args['include_unapproved'] = array( $unapproved_email );
1485          }
1486      }
1487  
1488      $per_page = 0;
1489      if ( get_option( 'page_comments' ) ) {
1490          $per_page = (int) get_query_var( 'comments_per_page' );
1491          if ( 0 === $per_page ) {
1492              $per_page = (int) get_option( 'comments_per_page' );
1493          }
1494  
1495          $comment_args['number'] = $per_page;
1496          $page                   = (int) get_query_var( 'cpage' );
1497  
1498          if ( $page ) {
1499              $comment_args['offset'] = ( $page - 1 ) * $per_page;
1500          } elseif ( 'oldest' === get_option( 'default_comments_page' ) ) {
1501              $comment_args['offset'] = 0;
1502          } else {
1503              // If fetching the first page of 'newest', we need a top-level comment count.
1504              $top_level_query = new WP_Comment_Query();
1505              $top_level_args  = array(
1506                  'count'   => true,
1507                  'orderby' => false,
1508                  'post_id' => $post->ID,
1509                  'status'  => 'approve',
1510              );
1511  
1512              if ( $comment_args['hierarchical'] ) {
1513                  $top_level_args['parent'] = 0;
1514              }
1515  
1516              if ( isset( $comment_args['include_unapproved'] ) ) {
1517                  $top_level_args['include_unapproved'] = $comment_args['include_unapproved'];
1518              }
1519  
1520              /**
1521               * Filters the arguments used in the top level comments query.
1522               *
1523               * @since 5.6.0
1524               *
1525               * @see WP_Comment_Query::__construct()
1526               *
1527               * @param array $top_level_args {
1528               *     The top level query arguments for the comments template.
1529               *
1530               *     @type bool         $count   Whether to return a comment count.
1531               *     @type string|array $orderby The field(s) to order by.
1532               *     @type int          $post_id The post ID.
1533               *     @type string|array $status  The comment status to limit results by.
1534               * }
1535               */
1536              $top_level_args = apply_filters( 'comments_template_top_level_query_args', $top_level_args );
1537  
1538              $top_level_count = $top_level_query->query( $top_level_args );
1539  
1540              $comment_args['offset'] = ( (int) ceil( $top_level_count / $per_page ) - 1 ) * $per_page;
1541          }
1542      }
1543  
1544      /**
1545       * Filters the arguments used to query comments in comments_template().
1546       *
1547       * @since 4.5.0
1548       *
1549       * @see WP_Comment_Query::__construct()
1550       *
1551       * @param array $comment_args {
1552       *     Array of WP_Comment_Query arguments.
1553       *
1554       *     @type string|array $orderby                   Field(s) to order by.
1555       *     @type string       $order                     Order of results. Accepts 'ASC' or 'DESC'.
1556       *     @type string       $status                    Comment status.
1557       *     @type array        $include_unapproved        Array of IDs or email addresses whose unapproved comments
1558       *                                                   will be included in results.
1559       *     @type int          $post_id                   ID of the post.
1560       *     @type bool         $no_found_rows             Whether to refrain from querying for found rows.
1561       *     @type bool         $update_comment_meta_cache Whether to prime cache for comment meta.
1562       *     @type bool|string  $hierarchical              Whether to query for comments hierarchically.
1563       *     @type int          $offset                    Comment offset.
1564       *     @type int          $number                    Number of comments to fetch.
1565       * }
1566       */
1567      $comment_args = apply_filters( 'comments_template_query_args', $comment_args );
1568  
1569      $comment_query = new WP_Comment_Query( $comment_args );
1570      $_comments     = $comment_query->comments;
1571  
1572      // Trees must be flattened before they're passed to the walker.
1573      if ( $comment_args['hierarchical'] ) {
1574          $comments_flat = array();
1575          foreach ( $_comments as $_comment ) {
1576              $comments_flat[]  = $_comment;
1577              $comment_children = $_comment->get_children(
1578                  array(
1579                      'format'  => 'flat',
1580                      'status'  => $comment_args['status'],
1581                      'orderby' => $comment_args['orderby'],
1582                  )
1583              );
1584  
1585              foreach ( $comment_children as $comment_child ) {
1586                  $comments_flat[] = $comment_child;
1587              }
1588          }
1589      } else {
1590          $comments_flat = $_comments;
1591      }
1592  
1593      /**
1594       * Filters the comments array.
1595       *
1596       * @since 2.1.0
1597       *
1598       * @param array $comments Array of comments supplied to the comments template.
1599       * @param int   $post_id  Post ID.
1600       */
1601      $wp_query->comments = apply_filters( 'comments_array', $comments_flat, $post->ID );
1602  
1603      $comments                        = &$wp_query->comments;
1604      $wp_query->comment_count         = count( $wp_query->comments );
1605      $wp_query->max_num_comment_pages = $comment_query->max_num_pages;
1606  
1607      if ( $separate_comments ) {
1608          $wp_query->comments_by_type = separate_comments( $comments );
1609          $comments_by_type           = &$wp_query->comments_by_type;
1610      } else {
1611          $wp_query->comments_by_type = array();
1612      }
1613  
1614      $overridden_cpage = false;
1615  
1616      if ( '' === get_query_var( 'cpage' ) && $wp_query->max_num_comment_pages > 1 ) {
1617          set_query_var( 'cpage', 'newest' === get_option( 'default_comments_page' ) ? get_comment_pages_count() : 1 );
1618          $overridden_cpage = true;
1619      }
1620  
1621      if ( ! defined( 'COMMENTS_TEMPLATE' ) ) {
1622          define( 'COMMENTS_TEMPLATE', true );
1623      }
1624  
1625      $theme_template = trailingslashit( $wp_stylesheet_path ) . $file;
1626  
1627      /**
1628       * Filters the path to the theme template file used for the comments template.
1629       *
1630       * @since 1.5.1
1631       *
1632       * @param string $theme_template The path to the theme template file.
1633       */
1634      $include = apply_filters( 'comments_template', $theme_template );
1635  
1636      if ( file_exists( $include ) ) {
1637          require $include;
1638      } elseif ( file_exists( trailingslashit( $wp_template_path ) . $file ) ) {
1639          require trailingslashit( $wp_template_path ) . $file;
1640      } else { // Backward compat code will be removed in a future release.
1641          require  ABSPATH . WPINC . '/theme-compat/comments.php';
1642      }
1643  }
1644  
1645  /**
1646   * Displays the link to the comments for the current post ID.
1647   *
1648   * @since 0.71
1649   *
1650   * @param false|string $zero      Optional. String to display when no comments. Default false.
1651   * @param false|string $one       Optional. String to display when only one comment is available. Default false.
1652   * @param false|string $more      Optional. String to display when there are more than one comment. Default false.
1653   * @param string       $css_class Optional. CSS class to use for comments. Default empty.
1654   * @param false|string $none      Optional. String to display when comments have been turned off. Default false.
1655   */
1656  function comments_popup_link( $zero = false, $one = false, $more = false, $css_class = '', $none = false ) {
1657      $post_id         = get_the_ID();
1658      $post_title      = get_the_title();
1659      $comments_number = (int) get_comments_number( $post_id );
1660  
1661      if ( false === $zero ) {
1662          /* translators: %s: Post title. */
1663          $zero = sprintf( __( 'No Comments<span class="screen-reader-text"> on %s</span>' ), $post_title );
1664      }
1665  
1666      if ( false === $one ) {
1667          /* translators: %s: Post title. */
1668          $one = sprintf( __( '1 Comment<span class="screen-reader-text"> on %s</span>' ), $post_title );
1669      }
1670  
1671      if ( false === $more ) {
1672          /* translators: 1: Number of comments, 2: Post title. */
1673          $more = _n(
1674              '%1$s Comment<span class="screen-reader-text"> on %2$s</span>',
1675              '%1$s Comments<span class="screen-reader-text"> on %2$s</span>',
1676              $comments_number
1677          );
1678          $more = sprintf( $more, number_format_i18n( $comments_number ), $post_title );
1679      }
1680  
1681      if ( false === $none ) {
1682          /* translators: %s: Post title. */
1683          $none = sprintf( __( 'Comments Off<span class="screen-reader-text"> on %s</span>' ), $post_title );
1684      }
1685  
1686      if ( 0 === $comments_number && ! comments_open() && ! pings_open() ) {
1687          printf(
1688              '<span%1$s>%2$s</span>',
1689              ! empty( $css_class ) ? ' class="' . esc_attr( $css_class ) . '"' : '',
1690              $none
1691          );
1692          return;
1693      }
1694  
1695      if ( post_password_required() ) {
1696          _e( 'Enter your password to view comments.' );
1697          return;
1698      }
1699  
1700      if ( 0 === $comments_number ) {
1701          $respond_link = get_permalink() . '#respond';
1702          /**
1703           * Filters the respond link when a post has no comments.
1704           *
1705           * @since 4.4.0
1706           *
1707           * @param string $respond_link The default response link.
1708           * @param int    $post_id      The post ID.
1709           */
1710          $comments_link = apply_filters( 'respond_link', $respond_link, $post_id );
1711      } else {
1712          $comments_link = get_comments_link();
1713      }
1714  
1715      $link_attributes = '';
1716  
1717      /**
1718       * Filters the comments link attributes for display.
1719       *
1720       * @since 2.5.0
1721       *
1722       * @param string $link_attributes The comments link attributes. Default empty.
1723       */
1724      $link_attributes = apply_filters( 'comments_popup_link_attributes', $link_attributes );
1725  
1726      printf(
1727          '<a href="%1$s"%2$s%3$s>%4$s</a>',
1728          esc_url( $comments_link ),
1729          ! empty( $css_class ) ? ' class="' . $css_class . '" ' : '',
1730          $link_attributes,
1731          get_comments_number_text( $zero, $one, $more )
1732      );
1733  }
1734  
1735  /**
1736   * Retrieves HTML content for reply to comment link.
1737   *
1738   * @since 2.7.0
1739   * @since 4.4.0 Added the ability for `$comment` to also accept a WP_Comment object.
1740   *
1741   * @param array          $args {
1742   *     Optional. Override default arguments.
1743   *
1744   *     @type string $add_below          The first part of the selector used to identify the comment to respond below.
1745   *                                      The resulting value is passed as the first parameter to addComment.moveForm(),
1746   *                                      concatenated as $add_below-$comment->comment_ID. Default 'comment'.
1747   *     @type string $respond_id         The selector identifying the responding comment. Passed as the third parameter
1748   *                                      to addComment.moveForm(), and appended to the link URL as a hash value.
1749   *                                      Default 'respond'.
1750   *     @type string $reply_text         The visible text of the Reply link. Default 'Reply'.
1751   *     @type string $reply_to_text      The accessible name of the Reply link, using `%s` as a placeholder
1752   *                                      for the comment author's name. Default 'Reply to %s'.
1753   *                                      Should start with the visible `reply_text` value.
1754   *     @type bool   $show_reply_to_text Whether to use `reply_to_text` as visible link text. Default false.
1755   *     @type string $login_text         The text of the link to reply if logged out. Default 'Log in to Reply'.
1756   *     @type int    $max_depth          The max depth of the comment tree. Default 0.
1757   *     @type int    $depth              The depth of the new comment. Must be greater than 0 and less than the value
1758   *                                      of the 'thread_comments_depth' option set in Settings > Discussion. Default 0.
1759   *     @type string $before             The text or HTML to add before the reply link. Default empty.
1760   *     @type string $after              The text or HTML to add after the reply link. Default empty.
1761   * }
1762   * @param int|WP_Comment $comment Optional. Comment being replied to. Default current comment.
1763   * @param int|WP_Post    $post    Optional. Post ID or WP_Post object the comment is going to be displayed on.
1764   *                                Default current post.
1765   * @return string|false|null Link to show comment form on success. False if comments are closed. Null on failure.
1766   */
1767  function get_comment_reply_link( $args = array(), $comment = null, $post = null ) {
1768      $defaults = array(
1769          'add_below'          => 'comment',
1770          'respond_id'         => 'respond',
1771          /* translators: Comment reply button text. */
1772          'reply_text'         => _x( 'Reply', 'verb' ),
1773          /* translators: Comment reply button text. %s: Comment author name. */
1774          'reply_to_text'      => __( 'Reply to %s' ),
1775          'login_text'         => __( 'Log in to Reply' ),
1776          'max_depth'          => 0,
1777          'depth'              => 0,
1778          'before'             => '',
1779          'after'              => '',
1780          'show_reply_to_text' => false,
1781      );
1782  
1783      $args = wp_parse_args( $args, $defaults );
1784  
1785      $args['max_depth'] = (int) $args['max_depth'];
1786      $args['depth']     = (int) $args['depth'];
1787  
1788      if ( 0 === $args['depth'] || $args['max_depth'] <= $args['depth'] ) {
1789          return null;
1790      }
1791  
1792      $comment = get_comment( $comment );
1793  
1794      if ( empty( $comment ) ) {
1795          return null;
1796      }
1797  
1798      if ( empty( $post ) ) {
1799          $post = $comment->comment_post_ID;
1800      }
1801  
1802      $post = get_post( $post );
1803  
1804      if ( ! comments_open( $post->ID ) ) {
1805          return false;
1806      }
1807  
1808      if ( get_option( 'page_comments' ) ) {
1809          $permalink = str_replace( '#comment-' . $comment->comment_ID, '', get_comment_link( $comment ) );
1810      } else {
1811          $permalink = get_permalink( $post->ID );
1812      }
1813  
1814      /**
1815       * Filters the comment reply link arguments.
1816       *
1817       * @since 4.1.0
1818       *
1819       * @param array      $args    Comment reply link arguments. See get_comment_reply_link()
1820       *                            for more information on accepted arguments.
1821       * @param WP_Comment $comment The object of the comment being replied to.
1822       * @param WP_Post    $post    The WP_Post object.
1823       */
1824      $args = apply_filters( 'comment_reply_link_args', $args, $comment, $post );
1825  
1826      if ( get_option( 'comment_registration' ) && ! is_user_logged_in() ) {
1827          $link = sprintf(
1828              '<a rel="nofollow" class="comment-reply-login" href="%s">%s</a>',
1829              esc_url( wp_login_url( get_permalink() ) ),
1830              $args['login_text']
1831          );
1832      } else {
1833          $data_attributes = array(
1834              'commentid'      => $comment->comment_ID,
1835              'postid'         => $post->ID,
1836              'belowelement'   => $args['add_below'] . '-' . $comment->comment_ID,
1837              'respondelement' => $args['respond_id'],
1838              'replyto'        => sprintf( $args['reply_to_text'], get_comment_author( $comment ) ),
1839          );
1840  
1841          $data_attribute_string = '';
1842  
1843          foreach ( $data_attributes as $name => $value ) {
1844              $data_attribute_string .= " data-{$name}=\"" . esc_attr( $value ) . '"';
1845          }
1846  
1847          $data_attribute_string = trim( $data_attribute_string );
1848  
1849          $reply_text = $args['show_reply_to_text']
1850              ? sprintf( $args['reply_to_text'], get_comment_author( $comment ) )
1851              : $args['reply_text'];
1852  
1853          $aria_label = $args['show_reply_to_text'] ? '' : sprintf( $args['reply_to_text'], get_comment_author( $comment ) );
1854  
1855          $link = sprintf(
1856              '<a rel="nofollow" class="comment-reply-link" href="%s" %s%s>%s</a>',
1857              esc_url(
1858                  add_query_arg(
1859                      array(
1860                          'replytocom'      => $comment->comment_ID,
1861                          'unapproved'      => false,
1862                          'moderation-hash' => false,
1863                      ),
1864                      $permalink
1865                  )
1866              ) . '#' . $args['respond_id'],
1867              $data_attribute_string,
1868              $aria_label ? ' aria-label="' . esc_attr( $aria_label ) . '"' : '',
1869              $reply_text
1870          );
1871      }
1872  
1873      $comment_reply_link = $args['before'] . $link . $args['after'];
1874  
1875      /**
1876       * Filters the comment reply link.
1877       *
1878       * @since 2.7.0
1879       *
1880       * @param string     $comment_reply_link The HTML markup for the comment reply link.
1881       * @param array      $args               An array of arguments overriding the defaults.
1882       * @param WP_Comment $comment            The object of the comment being replied.
1883       * @param WP_Post    $post               The WP_Post object.
1884       */
1885      return apply_filters( 'comment_reply_link', $comment_reply_link, $args, $comment, $post );
1886  }
1887  
1888  /**
1889   * Displays the HTML content for reply to comment link.
1890   *
1891   * @since 2.7.0
1892   *
1893   * @see get_comment_reply_link()
1894   *
1895   * @param array          $args    Optional. Override default options. Default empty array.
1896   * @param int|WP_Comment $comment Optional. Comment being replied to. Default current comment.
1897   * @param int|WP_Post    $post    Optional. Post ID or WP_Post object the comment is going to be displayed on.
1898   *                                Default current post.
1899   */
1900  function comment_reply_link( $args = array(), $comment = null, $post = null ) {
1901      echo get_comment_reply_link( $args, $comment, $post );
1902  }
1903  
1904  /**
1905   * Retrieves HTML content for reply to post link.
1906   *
1907   * @since 2.7.0
1908   *
1909   * @param array       $args {
1910   *     Optional. Override default arguments.
1911   *
1912   *     @type string $add_below  The first part of the selector used to identify the comment to respond below.
1913   *                              The resulting value is passed as the first parameter to addComment.moveForm(),
1914   *                              concatenated as $add_below-$comment->comment_ID. Default is 'post'.
1915   *     @type string $respond_id The selector identifying the responding comment. Passed as the third parameter
1916   *                              to addComment.moveForm(), and appended to the link URL as a hash value.
1917   *                              Default 'respond'.
1918   *     @type string $reply_text Text of the Reply link. Default is 'Leave a Comment'.
1919   *     @type string $login_text Text of the link to reply if logged out. Default is 'Log in to leave a Comment'.
1920   *     @type string $before     Text or HTML to add before the reply link. Default empty.
1921   *     @type string $after      Text or HTML to add after the reply link. Default empty.
1922   * }
1923   * @param int|WP_Post $post Optional. Post ID or WP_Post object the comment is going to be displayed on.
1924   *                          Default current post.
1925   * @return string|false Link to show comment form on success. False if comments are closed.
1926   */
1927  function get_post_reply_link( $args = array(), $post = null ) {
1928      $defaults = array(
1929          'add_below'  => 'post',
1930          'respond_id' => 'respond',
1931          'reply_text' => __( 'Leave a Comment' ),
1932          'login_text' => __( 'Log in to leave a Comment' ),
1933          'before'     => '',
1934          'after'      => '',
1935      );
1936  
1937      $args = wp_parse_args( $args, $defaults );
1938  
1939      $post = get_post( $post );
1940  
1941      if ( ! comments_open( $post->ID ) ) {
1942          return false;
1943      }
1944  
1945      if ( get_option( 'comment_registration' ) && ! is_user_logged_in() ) {
1946          $link = sprintf(
1947              '<a rel="nofollow" class="comment-reply-login" href="%s">%s</a>',
1948              wp_login_url( get_permalink() ),
1949              $args['login_text']
1950          );
1951      } else {
1952          $onclick = sprintf(
1953              'return addComment.moveForm( "%1$s-%2$s", "0", "%3$s", "%2$s" )',
1954              $args['add_below'],
1955              $post->ID,
1956              $args['respond_id']
1957          );
1958  
1959          $link = sprintf(
1960              "<a rel='nofollow' class='comment-reply-link' href='%s' onclick='%s'>%s</a>",
1961              get_permalink( $post->ID ) . '#' . $args['respond_id'],
1962              $onclick,
1963              $args['reply_text']
1964          );
1965      }
1966  
1967      $post_reply_link = $args['before'] . $link . $args['after'];
1968  
1969      /**
1970       * Filters the formatted post comments link HTML.
1971       *
1972       * @since 2.7.0
1973       *
1974       * @param string      $post_reply_link The HTML-formatted post comments link.
1975       * @param int|WP_Post $post            The post ID or WP_Post object.
1976       */
1977      return apply_filters( 'post_comments_link', $post_reply_link, $post );
1978  }
1979  
1980  /**
1981   * Displays the HTML content for reply to post link.
1982   *
1983   * @since 2.7.0
1984   *
1985   * @see get_post_reply_link()
1986   *
1987   * @param array       $args Optional. Override default options. Default empty array.
1988   * @param int|WP_Post $post Optional. Post ID or WP_Post object the comment is going to be displayed on.
1989   *                          Default current post.
1990   */
1991  function post_reply_link( $args = array(), $post = null ) {
1992      echo get_post_reply_link( $args, $post );
1993  }
1994  
1995  /**
1996   * Retrieves HTML content for cancel comment reply link.
1997   *
1998   * @since 2.7.0
1999   * @since 6.2.0 Added the `$post` parameter.
2000   *
2001   * @param string           $link_text Optional. Text to display for cancel reply link. If empty,
2002   *                                    defaults to 'Click here to cancel reply'. Default empty.
2003   * @param int|WP_Post|null $post      Optional. The post the comment thread is being
2004   *                                    displayed for. Defaults to the current global post.
2005   * @return string
2006   */
2007  function get_cancel_comment_reply_link( $link_text = '', $post = null ) {
2008      if ( empty( $link_text ) ) {
2009          $link_text = __( 'Click here to cancel reply.' );
2010      }
2011  
2012      $post        = get_post( $post );
2013      $reply_to_id = $post ? _get_comment_reply_id( $post->ID ) : 0;
2014      $link_style  = 0 !== $reply_to_id ? '' : ' style="display:none;"';
2015      $link_url    = esc_url( remove_query_arg( array( 'replytocom', 'unapproved', 'moderation-hash' ) ) ) . '#respond';
2016  
2017      $cancel_comment_reply_link = sprintf(
2018          '<a rel="nofollow" id="cancel-comment-reply-link" href="%1$s"%2$s>%3$s</a>',
2019          $link_url,
2020          $link_style,
2021          $link_text
2022      );
2023  
2024      /**
2025       * Filters the cancel comment reply link HTML.
2026       *
2027       * @since 2.7.0
2028       *
2029       * @param string $cancel_comment_reply_link The HTML-formatted cancel comment reply link.
2030       * @param string $link_url                  Cancel comment reply link URL.
2031       * @param string $link_text                 Cancel comment reply link text.
2032       */
2033      return apply_filters( 'cancel_comment_reply_link', $cancel_comment_reply_link, $link_url, $link_text );
2034  }
2035  
2036  /**
2037   * Displays HTML content for cancel comment reply link.
2038   *
2039   * @since 2.7.0
2040   *
2041   * @param string $link_text Optional. Text to display for cancel reply link. If empty,
2042   *                     defaults to 'Click here to cancel reply'. Default empty.
2043   */
2044  function cancel_comment_reply_link( $link_text = '' ) {
2045      echo get_cancel_comment_reply_link( $link_text );
2046  }
2047  
2048  /**
2049   * Retrieves hidden input HTML for replying to comments.
2050   *
2051   * @since 3.0.0
2052   * @since 6.2.0 Renamed `$post_id` to `$post` and added WP_Post support.
2053   *
2054   * @param int|WP_Post|null $post Optional. The post the comment is being displayed for.
2055   *                               Defaults to the current global post.
2056   * @return string Hidden input HTML for replying to comments.
2057   */
2058  function get_comment_id_fields( $post = null ) {
2059      $post = get_post( $post );
2060      if ( ! $post ) {
2061          return '';
2062      }
2063  
2064      $post_id     = $post->ID;
2065      $reply_to_id = _get_comment_reply_id( $post_id );
2066  
2067      $comment_id_fields  = "<input type='hidden' name='comment_post_ID' value='$post_id' id='comment_post_ID' />\n";
2068      $comment_id_fields .= "<input type='hidden' name='comment_parent' id='comment_parent' value='$reply_to_id' />\n";
2069  
2070      /**
2071       * Filters the returned comment ID fields.
2072       *
2073       * @since 3.0.0
2074       *
2075       * @param string $comment_id_fields The HTML-formatted hidden ID field comment elements.
2076       * @param int    $post_id           The post ID.
2077       * @param int    $reply_to_id       The ID of the comment being replied to.
2078       */
2079      return apply_filters( 'comment_id_fields', $comment_id_fields, $post_id, $reply_to_id );
2080  }
2081  
2082  /**
2083   * Outputs hidden input HTML for replying to comments.
2084   *
2085   * Adds two hidden inputs to the comment form to identify the `comment_post_ID`
2086   * and `comment_parent` values for threaded comments.
2087   *
2088   * This tag must be within the `<form>` section of the `comments.php` template.
2089   *
2090   * @since 2.7.0
2091   * @since 6.2.0 Renamed `$post_id` to `$post` and added WP_Post support.
2092   *
2093   * @see get_comment_id_fields()
2094   *
2095   * @param int|WP_Post|null $post Optional. The post the comment is being displayed for.
2096   *                               Defaults to the current global post.
2097   */
2098  function comment_id_fields( $post = null ) {
2099      echo get_comment_id_fields( $post );
2100  }
2101  
2102  /**
2103   * Displays text based on comment reply status.
2104   *
2105   * Only affects users with JavaScript disabled.
2106   *
2107   * {@internal The $comment global must be present to allow template tags access to the current
2108   * comment. See https://core.trac.wordpress.org/changeset/36512.}
2109   *
2110   * @since 2.7.0
2111   * @since 6.2.0 Added the `$post` parameter.
2112   *
2113   * @global WP_Comment $comment Global comment object.
2114   *
2115   * @param string|false     $no_reply_text  Optional. Text to display when not replying to a comment.
2116   *                                         Default false.
2117   * @param string|false     $reply_text     Optional. Text to display when replying to a comment.
2118   *                                         Default false. Accepts "%s" for the author of the comment
2119   *                                         being replied to.
2120   * @param bool             $link_to_parent Optional. Boolean to control making the author's name a link
2121   *                                         to their comment. Default true.
2122   * @param int|WP_Post|null $post           Optional. The post that the comment form is being displayed for.
2123   *                                         Defaults to the current global post.
2124   */
2125  function comment_form_title( $no_reply_text = false, $reply_text = false, $link_to_parent = true, $post = null ) {
2126      global $comment;
2127  
2128      if ( false === $no_reply_text ) {
2129          $no_reply_text = __( 'Leave a Reply' );
2130      }
2131  
2132      if ( false === $reply_text ) {
2133          /* translators: %s: Author of the comment being replied to. */
2134          $reply_text = __( 'Leave a Reply to %s' );
2135      }
2136  
2137      $post = get_post( $post );
2138      if ( ! $post ) {
2139          echo $no_reply_text;
2140          return;
2141      }
2142  
2143      $reply_to_id = _get_comment_reply_id( $post->ID );
2144  
2145      if ( 0 === $reply_to_id ) {
2146          echo $no_reply_text;
2147          return;
2148      }
2149  
2150      // Sets the global so that template tags can be used in the comment form.
2151      $comment = get_comment( $reply_to_id );
2152  
2153      if ( $link_to_parent ) {
2154          $comment_author = sprintf(
2155              '<a href="#comment-%1$s">%2$s</a>',
2156              get_comment_ID(),
2157              get_comment_author( $reply_to_id )
2158          );
2159      } else {
2160          $comment_author = get_comment_author( $reply_to_id );
2161      }
2162  
2163      printf( $reply_text, $comment_author );
2164  }
2165  
2166  /**
2167   * Gets the comment's reply to ID from the $_GET['replytocom'].
2168   *
2169   * @since 6.2.0
2170   *
2171   * @access private
2172   *
2173   * @param int|WP_Post|null $post The post the comment is being displayed for.
2174   *                               Defaults to the current global post.
2175   * @return int Comment's reply to ID.
2176   */
2177  function _get_comment_reply_id( $post = null ) {
2178      $post = get_post( $post );
2179  
2180      if ( ! $post || ! isset( $_GET['replytocom'] ) || ! is_numeric( $_GET['replytocom'] ) ) {
2181          return 0;
2182      }
2183  
2184      $reply_to_id = (int) $_GET['replytocom'];
2185  
2186      /*
2187       * Validate the comment.
2188       * Bail out if it does not exist, is not approved, or its
2189       * `comment_post_ID` does not match the given post ID.
2190       */
2191      $comment = get_comment( $reply_to_id );
2192  
2193      if (
2194          ! $comment instanceof WP_Comment ||
2195          0 === (int) $comment->comment_approved ||
2196          $post->ID !== (int) $comment->comment_post_ID
2197      ) {
2198          return 0;
2199      }
2200  
2201      return $reply_to_id;
2202  }
2203  
2204  /**
2205   * Displays a list of comments.
2206   *
2207   * Used in the comments.php template to list comments for a particular post.
2208   *
2209   * @since 2.7.0
2210   *
2211   * @see WP_Query::$comments
2212   *
2213   * @global WP_Query $wp_query           WordPress Query object.
2214   * @global int      $comment_alt
2215   * @global int      $comment_depth
2216   * @global int      $comment_thread_alt
2217   * @global bool     $overridden_cpage
2218   * @global bool     $in_comment_loop
2219   *
2220   * @param string|array $args {
2221   *     Optional. Formatting options.
2222   *
2223   *     @type object   $walker            Instance of a Walker class to list comments. Default null.
2224   *     @type int      $max_depth         The maximum comments depth. Default empty.
2225   *     @type string   $style             The style of list ordering. Accepts 'ul', 'ol', or 'div'.
2226   *                                       'div' will result in no additional list markup. Default 'ul'.
2227   *     @type callable $callback          Callback function to use. Default null.
2228   *     @type callable $end-callback      Callback function to use at the end. Default null.
2229   *     @type string   $type              Type of comments to list. Accepts 'all', 'comment',
2230   *                                       'pingback', 'trackback', 'pings'. Default 'all'.
2231   *     @type int      $page              Page ID to list comments for. Default empty.
2232   *     @type int      $per_page          Number of comments to list per page. Default empty.
2233   *     @type int      $avatar_size       Height and width dimensions of the avatar size. Default 32.
2234   *     @type bool     $reverse_top_level Ordering of the listed comments. If true, will display
2235   *                                       newest comments first. Default null.
2236   *     @type bool     $reverse_children  Whether to reverse child comments in the list. Default null.
2237   *     @type string   $format            How to format the comments list. Accepts 'html5', 'xhtml'.
2238   *                                       Default 'html5' if the theme supports it.
2239   *     @type bool     $short_ping        Whether to output short pings. Default false.
2240   *     @type bool     $echo              Whether to echo the output or return it. Default true.
2241   * }
2242   * @param WP_Comment[] $comments Optional. Array of WP_Comment objects. Default null.
2243   * @return string|null|void HTML list of comments when 'echo' is false, null when there are
2244   *                          no comments to list. Nothing otherwise.
2245   * @phpstan-return (
2246   *     $args is array{ echo: false|0|''|'0', ... }
2247   *         ? string|null
2248   *         : ( $args is ''|'0'|array ? void : string|null )
2249   * )
2250   */
2251  function wp_list_comments( $args = array(), $comments = null ) {
2252      global $wp_query, $comment_alt, $comment_depth, $comment_thread_alt, $overridden_cpage, $in_comment_loop;
2253  
2254      $in_comment_loop = true;
2255  
2256      $comment_alt        = 0;
2257      $comment_thread_alt = 0;
2258      $comment_depth      = 1;
2259  
2260      $defaults = array(
2261          'walker'            => null,
2262          'max_depth'         => '',
2263          'style'             => 'ul',
2264          'callback'          => null,
2265          'end-callback'      => null,
2266          'type'              => 'all',
2267          'page'              => '',
2268          'per_page'          => '',
2269          'avatar_size'       => 32,
2270          'reverse_top_level' => null,
2271          'reverse_children'  => '',
2272          'format'            => current_theme_supports( 'html5', 'comment-list' ) ? 'html5' : 'xhtml',
2273          'short_ping'        => false,
2274          'echo'              => true,
2275      );
2276  
2277      $parsed_args = wp_parse_args( $args, $defaults );
2278  
2279      /**
2280       * Filters the arguments used in retrieving the comment list.
2281       *
2282       * @since 4.0.0
2283       *
2284       * @see wp_list_comments()
2285       *
2286       * @param array $parsed_args An array of arguments for displaying comments.
2287       */
2288      $parsed_args = apply_filters( 'wp_list_comments_args', $parsed_args );
2289  
2290      // Figure out what comments we'll be looping through ($_comments).
2291      if ( null !== $comments ) {
2292          $comments = (array) $comments;
2293          if ( empty( $comments ) ) {
2294              return null;
2295          }
2296          if ( 'all' !== $parsed_args['type'] ) {
2297              $comments_by_type = separate_comments( $comments );
2298              if ( empty( $comments_by_type[ $parsed_args['type'] ] ) ) {
2299                  return null;
2300              }
2301              $_comments = $comments_by_type[ $parsed_args['type'] ];
2302          } else {
2303              $_comments = $comments;
2304          }
2305      } else {
2306          /*
2307           * If 'page' or 'per_page' has been passed, and does not match what's in $wp_query,
2308           * perform a separate comment query and allow Walker_Comment to paginate.
2309           */
2310          if ( $parsed_args['page'] || $parsed_args['per_page'] ) {
2311              $current_cpage = (int) get_query_var( 'cpage' );
2312              if ( ! $current_cpage ) {
2313                  $current_cpage = 'newest' === get_option( 'default_comments_page' ) ? 1 : $wp_query->max_num_comment_pages;
2314              }
2315  
2316              $current_per_page = (int) get_query_var( 'comments_per_page' );
2317              if ( (int) $parsed_args['page'] !== $current_cpage || (int) $parsed_args['per_page'] !== $current_per_page ) {
2318                  $comment_args = array(
2319                      'post_id' => get_the_ID(),
2320                      'orderby' => 'comment_date_gmt',
2321                      'order'   => 'ASC',
2322                      'status'  => 'approve',
2323                  );
2324  
2325                  if ( is_user_logged_in() ) {
2326                      $comment_args['include_unapproved'] = array( get_current_user_id() );
2327                  } else {
2328                      $unapproved_email = wp_get_unapproved_comment_author_email();
2329  
2330                      if ( $unapproved_email ) {
2331                          $comment_args['include_unapproved'] = array( $unapproved_email );
2332                      }
2333                  }
2334  
2335                  $comments = get_comments( $comment_args );
2336  
2337                  if ( 'all' !== $parsed_args['type'] ) {
2338                      $comments_by_type = separate_comments( $comments );
2339                      if ( empty( $comments_by_type[ $parsed_args['type'] ] ) ) {
2340                          return null;
2341                      }
2342  
2343                      $_comments = $comments_by_type[ $parsed_args['type'] ];
2344                  } else {
2345                      $_comments = $comments;
2346                  }
2347              }
2348  
2349              // Otherwise, fall back on the comments from `$wp_query->comments`.
2350          } else {
2351              if ( empty( $wp_query->comments ) ) {
2352                  return null;
2353              }
2354              if ( 'all' !== $parsed_args['type'] ) {
2355                  if ( empty( $wp_query->comments_by_type ) ) {
2356                      $wp_query->comments_by_type = separate_comments( $wp_query->comments );
2357                  }
2358                  if ( empty( $wp_query->comments_by_type[ $parsed_args['type'] ] ) ) {
2359                      return null;
2360                  }
2361                  $_comments = $wp_query->comments_by_type[ $parsed_args['type'] ];
2362              } else {
2363                  $_comments = $wp_query->comments;
2364              }
2365  
2366              if ( $wp_query->max_num_comment_pages ) {
2367                  $default_comments_page = get_option( 'default_comments_page' );
2368                  $cpage                 = (int) get_query_var( 'cpage' );
2369  
2370                  if ( 'newest' === $default_comments_page ) {
2371                      $parsed_args['cpage'] = $cpage;
2372                  } elseif ( 1 === $cpage ) {
2373                      /*
2374                       * When the first page shows the oldest comments,
2375                       * post permalink is the same as the comment permalink.
2376                       */
2377                      $parsed_args['cpage'] = '';
2378                  } else {
2379                      $parsed_args['cpage'] = $cpage;
2380                  }
2381  
2382                  $parsed_args['page']     = 0;
2383                  $parsed_args['per_page'] = 0;
2384              }
2385          }
2386      }
2387  
2388      if ( '' === $parsed_args['per_page'] && get_option( 'page_comments' ) ) {
2389          $parsed_args['per_page'] = get_query_var( 'comments_per_page' );
2390      }
2391  
2392      if ( empty( $parsed_args['per_page'] ) ) {
2393          $parsed_args['per_page'] = 0;
2394          $parsed_args['page']     = 0;
2395      }
2396  
2397      if ( '' === $parsed_args['max_depth'] ) {
2398          if ( get_option( 'thread_comments' ) ) {
2399              $parsed_args['max_depth'] = get_option( 'thread_comments_depth' );
2400          } else {
2401              $parsed_args['max_depth'] = -1;
2402          }
2403      }
2404  
2405      if ( '' === $parsed_args['page'] ) {
2406          if ( empty( $overridden_cpage ) ) {
2407              $parsed_args['page'] = get_query_var( 'cpage' );
2408          } else {
2409              $threaded            = ( -1 !== (int) $parsed_args['max_depth'] );
2410              $parsed_args['page'] = ( 'newest' === get_option( 'default_comments_page' ) ) ? get_comment_pages_count( $_comments, $parsed_args['per_page'], $threaded ) : 1;
2411              set_query_var( 'cpage', $parsed_args['page'] );
2412          }
2413      }
2414  
2415      // Validation check.
2416      $parsed_args['page']     = (int) $parsed_args['page'];
2417      $parsed_args['per_page'] = (int) $parsed_args['per_page'];
2418      if ( 0 === $parsed_args['page'] && 0 !== $parsed_args['per_page'] ) {
2419          $parsed_args['page'] = 1;
2420      }
2421  
2422      if ( null === $parsed_args['reverse_top_level'] ) {
2423          $parsed_args['reverse_top_level'] = ( 'desc' === get_option( 'comment_order' ) );
2424      }
2425  
2426      if ( empty( $parsed_args['walker'] ) ) {
2427          $walker = new Walker_Comment();
2428      } else {
2429          $walker = $parsed_args['walker'];
2430      }
2431  
2432      $output = $walker->paged_walk( $_comments, $parsed_args['max_depth'], $parsed_args['page'], $parsed_args['per_page'], $parsed_args );
2433  
2434      $in_comment_loop = false;
2435  
2436      if ( $parsed_args['echo'] ) {
2437          echo $output;
2438      } else {
2439          return $output;
2440      }
2441  }
2442  
2443  /**
2444   * Outputs a complete commenting form for use within a template.
2445   *
2446   * Most strings and form fields may be controlled through the `$args` array passed
2447   * into the function, while you may also choose to use the {@see 'comment_form_default_fields'}
2448   * filter to modify the array of default fields if you'd just like to add a new
2449   * one or remove a single field. All fields are also individually passed through
2450   * a filter of the {@see 'comment_form_field_$name'} where `$name` is the key used
2451   * in the array of fields.
2452   *
2453   * @since 3.0.0
2454   * @since 4.1.0 Introduced the 'class_submit' argument.
2455   * @since 4.2.0 Introduced the 'submit_button' and 'submit_fields' arguments.
2456   * @since 4.4.0 Introduced the 'class_form', 'title_reply_before', 'title_reply_after',
2457   *              'cancel_reply_before', and 'cancel_reply_after' arguments.
2458   * @since 4.5.0 The 'author', 'email', and 'url' form fields are limited to 245, 100,
2459   *              and 200 characters, respectively.
2460   * @since 4.6.0 Introduced the 'action' argument.
2461   * @since 4.9.6 Introduced the 'cookies' default comment field.
2462   * @since 5.5.0 Introduced the 'class_container' argument.
2463   * @since 6.8.2 Introduced the 'novalidate' argument.
2464   *
2465   * @param array       $args {
2466   *     Optional. Default arguments and form fields to override.
2467   *
2468   *     @type array $fields {
2469   *         Default comment fields, filterable by default via the {@see 'comment_form_default_fields'} hook.
2470   *
2471   *         @type string $author  Comment author field HTML.
2472   *         @type string $email   Comment author email field HTML.
2473   *         @type string $url     Comment author URL field HTML.
2474   *         @type string $cookies Comment cookie opt-in field HTML.
2475   *     }
2476   *     @type string $comment_field        The comment textarea field HTML.
2477   *     @type string $must_log_in          HTML element for a 'must be logged in to comment' message.
2478   *     @type string $logged_in_as         The HTML for the 'logged in as [user]' message, the Edit profile link,
2479   *                                        and the Log out link.
2480   *     @type string $comment_notes_before HTML element for a message displayed before the comment fields
2481   *                                        if the user is not logged in.
2482   *                                        Default 'Your email address will not be published.'.
2483   *     @type string $comment_notes_after  HTML element for a message displayed after the textarea field.
2484   *     @type string $action               The comment form element action attribute. Default '/wp-comments-post.php'.
2485   *     @type bool   $novalidate           Whether the novalidate attribute is added to the comment form. Default false.
2486   *     @type string $id_form              The comment form element id attribute. Default 'commentform'.
2487   *     @type string $id_submit            The comment submit element id attribute. Default 'submit'.
2488   *     @type string $class_container      The comment form container class attribute. Default 'comment-respond'.
2489   *     @type string $class_form           The comment form element class attribute. Default 'comment-form'.
2490   *     @type string $class_submit         The comment submit element class attribute. Default 'submit'.
2491   *     @type string $name_submit          The comment submit element name attribute. Default 'submit'.
2492   *     @type string $title_reply          The translatable 'reply' button label. Default 'Leave a Reply'.
2493   *     @type string $title_reply_to       The translatable 'reply-to' button label. Default 'Leave a Reply to %s',
2494   *                                        where %s is the author of the comment being replied to.
2495   *     @type string $title_reply_before   HTML displayed before the comment form title.
2496   *                                        Default: '<h3 id="reply-title" class="comment-reply-title">'.
2497   *     @type string $title_reply_after    HTML displayed after the comment form title.
2498   *                                        Default: '</h3>'.
2499   *     @type string $cancel_reply_before  HTML displayed before the cancel reply link.
2500   *     @type string $cancel_reply_after   HTML displayed after the cancel reply link.
2501   *     @type string $cancel_reply_link    The translatable 'cancel reply' button label. Default 'Cancel reply'.
2502   *     @type string $label_submit         The translatable 'submit' button label. Default 'Post a comment'.
2503   *     @type string $submit_button        HTML format for the Submit button.
2504   *                                        Default: '<input name="%1$s" type="submit" id="%2$s" class="%3$s" value="%4$s" />'.
2505   *     @type string $submit_field         HTML format for the markup surrounding the Submit button and comment hidden
2506   *                                        fields. Default: '<p class="form-submit">%1$s %2$s</p>', where %1$s is the
2507   *                                        submit button markup and %2$s is the comment hidden fields.
2508   *     @type string $format               The comment form format. Default 'xhtml'. Accepts 'xhtml', 'html5'.
2509   * }
2510   * @param int|WP_Post $post Optional. Post ID or WP_Post object to generate the form for. Default current post.
2511   */
2512  function comment_form( $args = array(), $post = null ) {
2513      $post = get_post( $post );
2514  
2515      // Exit the function if the post is invalid or comments are closed.
2516      if ( ! $post || ! comments_open( $post ) ) {
2517          /**
2518           * Fires after the comment form if comments are closed.
2519           *
2520           * For backward compatibility, this action also fires if comment_form()
2521           * is called with an invalid post object or ID.
2522           *
2523           * @since 3.0.0
2524           */
2525          do_action( 'comment_form_comments_closed' );
2526  
2527          return;
2528      }
2529  
2530      $post_id       = $post->ID;
2531      $commenter     = wp_get_current_commenter();
2532      $user          = wp_get_current_user();
2533      $user_identity = $user->exists() ? $user->display_name : '';
2534  
2535      $args = wp_parse_args( $args );
2536      if ( ! isset( $args['format'] ) ) {
2537          $args['format'] = current_theme_supports( 'html5', 'comment-form' ) ? 'html5' : 'xhtml';
2538      }
2539  
2540      $req   = get_option( 'require_name_email' );
2541      $html5 = 'html5' === $args['format'];
2542  
2543      // Define attributes in HTML5 or XHTML syntax.
2544      $required_attribute = ( $html5 ? ' required' : ' required="required"' );
2545      $checked_attribute  = ( $html5 ? ' checked' : ' checked="checked"' );
2546  
2547      // Identify required fields visually and create a message about the indicator.
2548      $required_indicator = ' ' . wp_required_field_indicator();
2549      $required_text      = ' ' . wp_required_field_message();
2550  
2551      $fields = array(
2552          'author' => sprintf(
2553              '<p class="comment-form-author">%s %s</p>',
2554              sprintf(
2555                  '<label for="author">%s%s</label>',
2556                  __( 'Name' ),
2557                  ( $req ? $required_indicator : '' )
2558              ),
2559              sprintf(
2560                  '<input id="author" name="author" type="text" value="%s" size="30" maxlength="245" autocomplete="name"%s />',
2561                  esc_attr( $commenter['comment_author'] ),
2562                  ( $req ? $required_attribute : '' )
2563              )
2564          ),
2565          'email'  => sprintf(
2566              '<p class="comment-form-email">%s %s</p>',
2567              sprintf(
2568                  '<label for="email">%s%s</label>',
2569                  __( 'Email' ),
2570                  ( $req ? $required_indicator : '' )
2571              ),
2572              sprintf(
2573                  '<input id="email" name="email" %s value="%s" size="30" maxlength="100" aria-describedby="email-notes" autocomplete="email"%s />',
2574                  ( $html5 ? 'type="email"' : 'type="text"' ),
2575                  esc_attr( $commenter['comment_author_email'] ),
2576                  ( $req ? $required_attribute : '' )
2577              )
2578          ),
2579          'url'    => sprintf(
2580              '<p class="comment-form-url">%s %s</p>',
2581              sprintf(
2582                  '<label for="url">%s</label>',
2583                  __( 'Website' )
2584              ),
2585              sprintf(
2586                  '<input id="url" name="url" %s value="%s" size="30" maxlength="200" autocomplete="url" />',
2587                  ( $html5 ? 'type="url"' : 'type="text"' ),
2588                  esc_attr( $commenter['comment_author_url'] )
2589              )
2590          ),
2591      );
2592  
2593      if ( has_action( 'set_comment_cookies', 'wp_set_comment_cookies' ) && get_option( 'show_comments_cookies_opt_in' ) ) {
2594          $consent = empty( $commenter['comment_author_email'] ) ? '' : $checked_attribute;
2595  
2596          $fields['cookies'] = sprintf(
2597              '<p class="comment-form-cookies-consent">%s %s</p>',
2598              sprintf(
2599                  '<input id="wp-comment-cookies-consent" name="wp-comment-cookies-consent" type="checkbox" value="yes"%s />',
2600                  $consent
2601              ),
2602              sprintf(
2603                  '<label for="wp-comment-cookies-consent">%s</label>',
2604                  __( 'Save my name, email, and website in this browser for the next time I comment.' )
2605              )
2606          );
2607  
2608          // Ensure that the passed fields include cookies consent.
2609          if ( isset( $args['fields'] ) && ! isset( $args['fields']['cookies'] ) ) {
2610              $args['fields']['cookies'] = $fields['cookies'];
2611          }
2612      }
2613  
2614      $original_fields = $fields;
2615  
2616      /**
2617       * Filters the default comment form fields.
2618       *
2619       * @since 3.0.0
2620       *
2621       * @param string[] $fields Array of the default comment fields.
2622       */
2623      $fields = apply_filters( 'comment_form_default_fields', $fields );
2624  
2625      $defaults = array(
2626          'fields'               => $fields,
2627          'comment_field'        => sprintf(
2628              '<p class="comment-form-comment">%s %s</p>',
2629              sprintf(
2630                  '<label for="comment">%s%s</label>',
2631                  _x( 'Comment', 'noun' ),
2632                  $required_indicator
2633              ),
2634              '<textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525"' . $required_attribute . '></textarea>'
2635          ),
2636          'must_log_in'          => sprintf(
2637              '<p class="must-log-in">%s</p>',
2638              sprintf(
2639                  /* translators: %s: Login URL. */
2640                  __( 'You must be <a href="%s">logged in</a> to post a comment.' ),
2641                  /** This filter is documented in wp-includes/link-template.php */
2642                  wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ), $post_id ) )
2643              )
2644          ),
2645          'logged_in_as'         => sprintf(
2646              '<p class="logged-in-as">%s%s</p>',
2647              sprintf(
2648                  /* translators: 1: User name, 2: Edit user link, 3: Logout URL. */
2649                  __( 'Logged in as %1$s. <a href="%2$s">Edit your profile</a>. <a href="%3$s">Log out?</a>' ),
2650                  $user_identity,
2651                  get_edit_user_link(),
2652                  /** This filter is documented in wp-includes/link-template.php */
2653                  wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ), $post_id ) )
2654              ),
2655              $required_text
2656          ),
2657          'comment_notes_before' => sprintf(
2658              '<p class="comment-notes">%s%s</p>',
2659              sprintf(
2660                  '<span id="email-notes">%s</span>',
2661                  __( 'Your email address will not be published.' )
2662              ),
2663              $required_text
2664          ),
2665          'comment_notes_after'  => '',
2666          'action'               => site_url( '/wp-comments-post.php' ),
2667          'novalidate'           => false,
2668          'id_form'              => 'commentform',
2669          'id_submit'            => 'submit',
2670          'class_container'      => 'comment-respond',
2671          'class_form'           => 'comment-form',
2672          'class_submit'         => 'submit',
2673          'name_submit'          => 'submit',
2674          'title_reply'          => __( 'Leave a Reply' ),
2675          /* translators: %s: Author of the comment being replied to. */
2676          'title_reply_to'       => __( 'Leave a Reply to %s' ),
2677          'title_reply_before'   => '<h3 id="reply-title" class="comment-reply-title">',
2678          'title_reply_after'    => '</h3>',
2679          'cancel_reply_before'  => ' <small>',
2680          'cancel_reply_after'   => '</small>',
2681          'cancel_reply_link'    => __( 'Cancel reply' ),
2682          'label_submit'         => __( 'Post Comment' ),
2683          'submit_button'        => '<input name="%1$s" type="submit" id="%2$s" class="%3$s" value="%4$s" />',
2684          'submit_field'         => '<p class="form-submit">%1$s %2$s</p>',
2685          'format'               => 'xhtml',
2686      );
2687  
2688      /**
2689       * Filters the comment form default arguments.
2690       *
2691       * Use {@see 'comment_form_default_fields'} to filter the comment fields.
2692       *
2693       * @since 3.0.0
2694       *
2695       * @param array $defaults The default comment form arguments.
2696       */
2697      $args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) );
2698  
2699      // Ensure that the filtered arguments contain all required default values.
2700      $args = array_merge( $defaults, $args );
2701  
2702      // Remove `aria-describedby` from the email field if there's no associated description.
2703      if ( isset( $args['fields']['email'] ) && ! str_contains( $args['comment_notes_before'], 'id="email-notes"' ) ) {
2704          $args['fields']['email'] = str_replace(
2705              ' aria-describedby="email-notes"',
2706              '',
2707              $args['fields']['email']
2708          );
2709      }
2710  
2711      /**
2712       * Fires before the comment form.
2713       *
2714       * @since 3.0.0
2715       */
2716      do_action( 'comment_form_before' );
2717      ?>
2718      <div id="respond" class="<?php echo esc_attr( $args['class_container'] ); ?>">
2719          <?php
2720          echo $args['title_reply_before'];
2721  
2722          comment_form_title( $args['title_reply'], $args['title_reply_to'], true, $post_id );
2723  
2724          if ( get_option( 'thread_comments' ) ) {
2725              echo $args['cancel_reply_before'];
2726  
2727              cancel_comment_reply_link( $args['cancel_reply_link'] );
2728  
2729              echo $args['cancel_reply_after'];
2730          }
2731  
2732          echo $args['title_reply_after'];
2733  
2734          if ( get_option( 'comment_registration' ) && ! is_user_logged_in() ) :
2735  
2736              echo $args['must_log_in'];
2737              /**
2738               * Fires after the HTML-formatted 'must log in after' message in the comment form.
2739               *
2740               * @since 3.0.0
2741               */
2742              do_action( 'comment_form_must_log_in_after' );
2743  
2744          else :
2745  
2746              printf(
2747                  '<form action="%s" method="post" id="%s" class="%s"%s>',
2748                  esc_url( $args['action'] ),
2749                  esc_attr( $args['id_form'] ),
2750                  esc_attr( $args['class_form'] ),
2751                  ( $args['novalidate'] ? ' novalidate' : '' )
2752              );
2753  
2754              /**
2755               * Fires at the top of the comment form, inside the form tag.
2756               *
2757               * @since 3.0.0
2758               */
2759              do_action( 'comment_form_top' );
2760  
2761              if ( is_user_logged_in() ) :
2762  
2763                  /**
2764                   * Filters the 'logged in' message for the comment form for display.
2765                   *
2766                   * @since 3.0.0
2767                   *
2768                   * @param string $args_logged_in The HTML for the 'logged in as [user]' message,
2769                   *                               the Edit profile link, and the Log out link.
2770                   * @param array  $commenter      An array containing the comment author's
2771                   *                               username, email, and URL.
2772                   * @param string $user_identity  If the commenter is a registered user,
2773                   *                               the display name, blank otherwise.
2774                   */
2775                  echo apply_filters( 'comment_form_logged_in', $args['logged_in_as'], $commenter, $user_identity );
2776  
2777                  /**
2778                   * Fires after the is_user_logged_in() check in the comment form.
2779                   *
2780                   * @since 3.0.0
2781                   *
2782                   * @param array  $commenter     An array containing the comment author's
2783                   *                              username, email, and URL.
2784                   * @param string $user_identity If the commenter is a registered user,
2785                   *                              the display name, blank otherwise.
2786                   */
2787                  do_action( 'comment_form_logged_in_after', $commenter, $user_identity );
2788  
2789              else :
2790  
2791                  echo $args['comment_notes_before'];
2792  
2793              endif;
2794  
2795              // Prepare an array of all fields, including the textarea.
2796              $comment_fields = array( 'comment' => $args['comment_field'] ) + (array) $args['fields'];
2797  
2798              /**
2799               * Filters the comment form fields, including the textarea.
2800               *
2801               * @since 4.4.0
2802               *
2803               * @param array $comment_fields The comment fields.
2804               */
2805              $comment_fields = apply_filters( 'comment_form_fields', $comment_fields );
2806  
2807              // Get an array of field names, excluding the textarea.
2808              $comment_field_keys = array_diff( array_keys( $comment_fields ), array( 'comment' ) );
2809  
2810              // Get the first and the last field name, excluding the textarea.
2811              $first_field = reset( $comment_field_keys );
2812              $last_field  = end( $comment_field_keys );
2813  
2814              foreach ( $comment_fields as $name => $field ) {
2815  
2816                  if ( 'comment' === $name ) {
2817  
2818                      /**
2819                       * Filters the content of the comment textarea field for display.
2820                       *
2821                       * @since 3.0.0
2822                       *
2823                       * @param string $args_comment_field The content of the comment textarea field.
2824                       */
2825                      echo apply_filters( 'comment_form_field_comment', $field );
2826  
2827                      echo $args['comment_notes_after'];
2828  
2829                  } elseif ( ! is_user_logged_in() || ! isset( $original_fields[ $name ] ) ) {
2830  
2831                      if ( $first_field === $name ) {
2832                          /**
2833                           * Fires before the comment fields in the comment form, excluding the textarea.
2834                           *
2835                           * @since 3.0.0
2836                           */
2837                          do_action( 'comment_form_before_fields' );
2838                      }
2839  
2840                      /**
2841                       * Filters a comment form field for display.
2842                       *
2843                       * The dynamic portion of the hook name, `$name`, refers to the name
2844                       * of the comment form field.
2845                       *
2846                       * Possible hook names include:
2847                       *
2848                       *  - `comment_form_field_comment`
2849                       *  - `comment_form_field_author`
2850                       *  - `comment_form_field_email`
2851                       *  - `comment_form_field_url`
2852                       *  - `comment_form_field_cookies`
2853                       *
2854                       * @since 3.0.0
2855                       *
2856                       * @param string $field The HTML-formatted output of the comment form field.
2857                       */
2858                      echo apply_filters( "comment_form_field_{$name}", $field ) . "\n";
2859  
2860                      if ( $last_field === $name ) {
2861                          /**
2862                           * Fires after the comment fields in the comment form, excluding the textarea.
2863                           *
2864                           * @since 3.0.0
2865                           */
2866                          do_action( 'comment_form_after_fields' );
2867                      }
2868                  }
2869              }
2870  
2871              $submit_button = sprintf(
2872                  $args['submit_button'],
2873                  esc_attr( $args['name_submit'] ),
2874                  esc_attr( $args['id_submit'] ),
2875                  esc_attr( $args['class_submit'] ),
2876                  esc_attr( $args['label_submit'] )
2877              );
2878  
2879              /**
2880               * Filters the submit button for the comment form to display.
2881               *
2882               * @since 4.2.0
2883               *
2884               * @param string $submit_button HTML markup for the submit button.
2885               * @param array  $args          Arguments passed to comment_form().
2886               */
2887              $submit_button = apply_filters( 'comment_form_submit_button', $submit_button, $args );
2888  
2889              $submit_field = sprintf(
2890                  $args['submit_field'],
2891                  $submit_button,
2892                  get_comment_id_fields( $post_id )
2893              );
2894  
2895              /**
2896               * Filters the submit field for the comment form to display.
2897               *
2898               * The submit field includes the submit button, hidden fields for the
2899               * comment form, and any wrapper markup.
2900               *
2901               * @since 4.2.0
2902               *
2903               * @param string $submit_field HTML markup for the submit field.
2904               * @param array  $args         Arguments passed to comment_form().
2905               */
2906              echo apply_filters( 'comment_form_submit_field', $submit_field, $args );
2907  
2908              /**
2909               * Fires at the bottom of the comment form, inside the closing form tag.
2910               *
2911               * @since 1.5.0
2912               *
2913               * @param int $post_id The post ID.
2914               */
2915              do_action( 'comment_form', $post_id );
2916  
2917              echo '</form>';
2918  
2919          endif;
2920          ?>
2921      </div><!-- #respond -->
2922      <?php
2923  
2924      /**
2925       * Fires after the comment form.
2926       *
2927       * @since 3.0.0
2928       */
2929      do_action( 'comment_form_after' );
2930  }


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