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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * WordPress Post Template Functions. 4 * 5 * Gets content for the current post in the loop. 6 * 7 * @package WordPress 8 * @subpackage Template 9 */ 10 11 /** 12 * Display the ID of the current item in the WordPress Loop. 13 * 14 * @since 0.71 15 */ 16 function the_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 17 echo get_the_ID(); 18 } 19 20 /** 21 * Retrieve the ID of the current item in the WordPress Loop. 22 * 23 * @since 2.1.0 24 * 25 * @return int|false The ID of the current item in the WordPress Loop. False if $post is not set. 26 */ 27 function get_the_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 28 $post = get_post(); 29 return ! empty( $post ) ? $post->ID : false; 30 } 31 32 /** 33 * Display or retrieve the current post title with optional markup. 34 * 35 * @since 0.71 36 * 37 * @param string $before Optional. Markup to prepend to the title. Default empty. 38 * @param string $after Optional. Markup to append to the title. Default empty. 39 * @param bool $echo Optional. Whether to echo or return the title. Default true for echo. 40 * @return string|void Current post title if $echo is false. 41 */ 42 function the_title( $before = '', $after = '', $echo = true ) { 43 $title = get_the_title(); 44 45 if ( strlen( $title ) == 0 ) { 46 return; 47 } 48 49 $title = $before . $title . $after; 50 51 if ( $echo ) { 52 echo $title; 53 } else { 54 return $title; 55 } 56 } 57 58 /** 59 * Sanitize the current title when retrieving or displaying. 60 * 61 * Works like the_title(), except the parameters can be in a string or 62 * an array. See the function for what can be override in the $args parameter. 63 * 64 * The title before it is displayed will have the tags stripped and esc_attr() 65 * before it is passed to the user or displayed. The default as with the_title(), 66 * is to display the title. 67 * 68 * @since 2.3.0 69 * 70 * @param string|array $args { 71 * Title attribute arguments. Optional. 72 * 73 * @type string $before Markup to prepend to the title. Default empty. 74 * @type string $after Markup to append to the title. Default empty. 75 * @type bool $echo Whether to echo or return the title. Default true for echo. 76 * @type WP_Post $post Current post object to retrieve the title for. 77 * } 78 * @return string|void String when echo is false. 79 */ 80 function the_title_attribute( $args = '' ) { 81 $defaults = array( 82 'before' => '', 83 'after' => '', 84 'echo' => true, 85 'post' => get_post(), 86 ); 87 $parsed_args = wp_parse_args( $args, $defaults ); 88 89 $title = get_the_title( $parsed_args['post'] ); 90 91 if ( strlen( $title ) == 0 ) { 92 return; 93 } 94 95 $title = $parsed_args['before'] . $title . $parsed_args['after']; 96 $title = esc_attr( strip_tags( $title ) ); 97 98 if ( $parsed_args['echo'] ) { 99 echo $title; 100 } else { 101 return $title; 102 } 103 } 104 105 /** 106 * Retrieve post title. 107 * 108 * If the post is protected and the visitor is not an admin, then "Protected" 109 * will be displayed before the post title. If the post is private, then 110 * "Private" will be located before the post title. 111 * 112 * @since 0.71 113 * 114 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 115 * @return string 116 */ 117 function get_the_title( $post = 0 ) { 118 $post = get_post( $post ); 119 120 $title = isset( $post->post_title ) ? $post->post_title : ''; 121 $id = isset( $post->ID ) ? $post->ID : 0; 122 123 if ( ! is_admin() ) { 124 if ( ! empty( $post->post_password ) ) { 125 126 /* translators: %s: Protected post title. */ 127 $prepend = __( 'Protected: %s' ); 128 129 /** 130 * Filters the text prepended to the post title for protected posts. 131 * 132 * The filter is only applied on the front end. 133 * 134 * @since 2.8.0 135 * 136 * @param string $prepend Text displayed before the post title. 137 * Default 'Protected: %s'. 138 * @param WP_Post $post Current post object. 139 */ 140 $protected_title_format = apply_filters( 'protected_title_format', $prepend, $post ); 141 $title = sprintf( $protected_title_format, $title ); 142 } elseif ( isset( $post->post_status ) && 'private' == $post->post_status ) { 143 144 /* translators: %s: Private post title. */ 145 $prepend = __( 'Private: %s' ); 146 147 /** 148 * Filters the text prepended to the post title of private posts. 149 * 150 * The filter is only applied on the front end. 151 * 152 * @since 2.8.0 153 * 154 * @param string $prepend Text displayed before the post title. 155 * Default 'Private: %s'. 156 * @param WP_Post $post Current post object. 157 */ 158 $private_title_format = apply_filters( 'private_title_format', $prepend, $post ); 159 $title = sprintf( $private_title_format, $title ); 160 } 161 } 162 163 /** 164 * Filters the post title. 165 * 166 * @since 0.71 167 * 168 * @param string $title The post title. 169 * @param int $id The post ID. 170 */ 171 return apply_filters( 'the_title', $title, $id ); 172 } 173 174 /** 175 * Display the Post Global Unique Identifier (guid). 176 * 177 * The guid will appear to be a link, but should not be used as a link to the 178 * post. The reason you should not use it as a link, is because of moving the 179 * blog across domains. 180 * 181 * URL is escaped to make it XML-safe. 182 * 183 * @since 1.5.0 184 * 185 * @param int|WP_Post $post Optional. Post ID or post object. Default is global $post. 186 */ 187 function the_guid( $post = 0 ) { 188 $post = get_post( $post ); 189 190 $guid = isset( $post->guid ) ? get_the_guid( $post ) : ''; 191 $id = isset( $post->ID ) ? $post->ID : 0; 192 193 /** 194 * Filters the escaped Global Unique Identifier (guid) of the post. 195 * 196 * @since 4.2.0 197 * 198 * @see get_the_guid() 199 * 200 * @param string $guid Escaped Global Unique Identifier (guid) of the post. 201 * @param int $id The post ID. 202 */ 203 echo apply_filters( 'the_guid', $guid, $id ); 204 } 205 206 /** 207 * Retrieve the Post Global Unique Identifier (guid). 208 * 209 * The guid will appear to be a link, but should not be used as an link to the 210 * post. The reason you should not use it as a link, is because of moving the 211 * blog across domains. 212 * 213 * @since 1.5.0 214 * 215 * @param int|WP_Post $post Optional. Post ID or post object. Default is global $post. 216 * @return string 217 */ 218 function get_the_guid( $post = 0 ) { 219 $post = get_post( $post ); 220 221 $guid = isset( $post->guid ) ? $post->guid : ''; 222 $id = isset( $post->ID ) ? $post->ID : 0; 223 224 /** 225 * Filters the Global Unique Identifier (guid) of the post. 226 * 227 * @since 1.5.0 228 * 229 * @param string $guid Global Unique Identifier (guid) of the post. 230 * @param int $id The post ID. 231 */ 232 return apply_filters( 'get_the_guid', $guid, $id ); 233 } 234 235 /** 236 * Display the post content. 237 * 238 * @since 0.71 239 * 240 * @param string $more_link_text Optional. Content for when there is more text. 241 * @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false. 242 */ 243 function the_content( $more_link_text = null, $strip_teaser = false ) { 244 $content = get_the_content( $more_link_text, $strip_teaser ); 245 246 /** 247 * Filters the post content. 248 * 249 * @since 0.71 250 * 251 * @param string $content Content of the current post. 252 */ 253 $content = apply_filters( 'the_content', $content ); 254 $content = str_replace( ']]>', ']]>', $content ); 255 echo $content; 256 } 257 258 /** 259 * Retrieve the post content. 260 * 261 * @since 0.71 262 * @since 5.2.0 Added the `$post` parameter. 263 * 264 * @global int $page Page number of a single post/page. 265 * @global int $more Boolean indicator for whether single post/page is being viewed. 266 * @global bool $preview Whether post/page is in preview mode. 267 * @global array $pages Array of all pages in post/page. Each array element contains 268 * part of the content separated by the `<!--nextpage-->` tag. 269 * @global int $multipage Boolean indicator for whether multiple pages are in play. 270 * 271 * @param string $more_link_text Optional. Content for when there is more text. 272 * @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false. 273 * @param WP_Post|object|int $post Optional. WP_Post instance or Post ID/object. Default is null. 274 * @return string 275 */ 276 function get_the_content( $more_link_text = null, $strip_teaser = false, $post = null ) { 277 global $page, $more, $preview, $pages, $multipage; 278 279 $_post = get_post( $post ); 280 281 if ( ! ( $_post instanceof WP_Post ) ) { 282 return ''; 283 } 284 285 if ( null === $post ) { 286 $elements = compact( 'page', 'more', 'preview', 'pages', 'multipage' ); 287 } else { 288 $elements = generate_postdata( $_post ); 289 } 290 291 if ( null === $more_link_text ) { 292 $more_link_text = sprintf( 293 '<span aria-label="%1$s">%2$s</span>', 294 sprintf( 295 /* translators: %s: Post title. */ 296 __( 'Continue reading %s' ), 297 the_title_attribute( 298 array( 299 'echo' => false, 300 'post' => $_post, 301 ) 302 ) 303 ), 304 __( '(more…)' ) 305 ); 306 } 307 308 $output = ''; 309 $has_teaser = false; 310 311 // If post password required and it doesn't match the cookie. 312 if ( post_password_required( $_post ) ) { 313 return get_the_password_form( $_post ); 314 } 315 316 if ( $elements['page'] > count( $elements['pages'] ) ) { // if the requested page doesn't exist 317 $elements['page'] = count( $elements['pages'] ); // give them the highest numbered page that DOES exist 318 } 319 320 $page_no = $elements['page']; 321 $content = $elements['pages'][ $page_no - 1 ]; 322 if ( preg_match( '/<!--more(.*?)?-->/', $content, $matches ) ) { 323 if ( has_block( 'more', $content ) ) { 324 // Remove the core/more block delimiters. They will be left over after $content is split up. 325 $content = preg_replace( '/<!-- \/?wp:more(.*?) -->/', '', $content ); 326 } 327 328 $content = explode( $matches[0], $content, 2 ); 329 330 if ( ! empty( $matches[1] ) && ! empty( $more_link_text ) ) { 331 $more_link_text = strip_tags( wp_kses_no_null( trim( $matches[1] ) ) ); 332 } 333 334 $has_teaser = true; 335 } else { 336 $content = array( $content ); 337 } 338 339 if ( false !== strpos( $_post->post_content, '<!--noteaser-->' ) && ( ! $elements['multipage'] || $elements['page'] == 1 ) ) { 340 $strip_teaser = true; 341 } 342 343 $teaser = $content[0]; 344 345 if ( $elements['more'] && $strip_teaser && $has_teaser ) { 346 $teaser = ''; 347 } 348 349 $output .= $teaser; 350 351 if ( count( $content ) > 1 ) { 352 if ( $elements['more'] ) { 353 $output .= '<span id="more-' . $_post->ID . '"></span>' . $content[1]; 354 } else { 355 if ( ! empty( $more_link_text ) ) { 356 357 /** 358 * Filters the Read More link text. 359 * 360 * @since 2.8.0 361 * 362 * @param string $more_link_element Read More link element. 363 * @param string $more_link_text Read More text. 364 */ 365 $output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink( $_post ) . "#more-{$_post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text ); 366 } 367 $output = force_balance_tags( $output ); 368 } 369 } 370 371 return $output; 372 } 373 374 /** 375 * Display the post excerpt. 376 * 377 * @since 0.71 378 */ 379 function the_excerpt() { 380 381 /** 382 * Filters the displayed post excerpt. 383 * 384 * @since 0.71 385 * 386 * @see get_the_excerpt() 387 * 388 * @param string $post_excerpt The post excerpt. 389 */ 390 echo apply_filters( 'the_excerpt', get_the_excerpt() ); 391 } 392 393 /** 394 * Retrieves the post excerpt. 395 * 396 * @since 0.71 397 * @since 4.5.0 Introduced the `$post` parameter. 398 * 399 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 400 * @return string Post excerpt. 401 */ 402 function get_the_excerpt( $post = null ) { 403 if ( is_bool( $post ) ) { 404 _deprecated_argument( __FUNCTION__, '2.3.0' ); 405 } 406 407 $post = get_post( $post ); 408 if ( empty( $post ) ) { 409 return ''; 410 } 411 412 if ( post_password_required( $post ) ) { 413 return __( 'There is no excerpt because this is a protected post.' ); 414 } 415 416 /** 417 * Filters the retrieved post excerpt. 418 * 419 * @since 1.2.0 420 * @since 4.5.0 Introduced the `$post` parameter. 421 * 422 * @param string $post_excerpt The post excerpt. 423 * @param WP_Post $post Post object. 424 */ 425 return apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ); 426 } 427 428 /** 429 * Determines whether the post has a custom excerpt. 430 * 431 * For more information on this and similar theme functions, check out 432 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 433 * Conditional Tags} article in the Theme Developer Handbook. 434 * 435 * @since 2.3.0 436 * 437 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 438 * @return bool True if the post has a custom excerpt, false otherwise. 439 */ 440 function has_excerpt( $post = 0 ) { 441 $post = get_post( $post ); 442 return ( ! empty( $post->post_excerpt ) ); 443 } 444 445 /** 446 * Displays the classes for the post container element. 447 * 448 * @since 2.7.0 449 * 450 * @param string|array $class One or more classes to add to the class list. 451 * @param int|WP_Post $post_id Optional. Post ID or post object. Defaults to the global `$post`. 452 */ 453 function post_class( $class = '', $post_id = null ) { 454 // Separates classes with a single space, collates classes for post DIV 455 echo 'class="' . join( ' ', get_post_class( $class, $post_id ) ) . '"'; 456 } 457 458 /** 459 * Retrieves an array of the class names for the post container element. 460 * 461 * The class names are many. If the post is a sticky, then the 'sticky' 462 * class name. The class 'hentry' is always added to each post. If the post has a 463 * post thumbnail, 'has-post-thumbnail' is added as a class. For each taxonomy that 464 * the post belongs to, a class will be added of the format '{$taxonomy}-{$slug}' - 465 * eg 'category-foo' or 'my_custom_taxonomy-bar'. 466 * 467 * The 'post_tag' taxonomy is a special 468 * case; the class has the 'tag-' prefix instead of 'post_tag-'. All class names are 469 * passed through the filter, {@see 'post_class'}, with the list of class names, followed by 470 * $class parameter value, with the post ID as the last parameter. 471 * 472 * @since 2.7.0 473 * @since 4.2.0 Custom taxonomy class names were added. 474 * 475 * @param string|string[] $class Space-separated string or array of class names to add to the class list. 476 * @param int|WP_Post $post_id Optional. Post ID or post object. 477 * @return string[] Array of class names. 478 */ 479 function get_post_class( $class = '', $post_id = null ) { 480 $post = get_post( $post_id ); 481 482 $classes = array(); 483 484 if ( $class ) { 485 if ( ! is_array( $class ) ) { 486 $class = preg_split( '#\s+#', $class ); 487 } 488 $classes = array_map( 'esc_attr', $class ); 489 } else { 490 // Ensure that we always coerce class to being an array. 491 $class = array(); 492 } 493 494 if ( ! $post ) { 495 return $classes; 496 } 497 498 $classes[] = 'post-' . $post->ID; 499 if ( ! is_admin() ) { 500 $classes[] = $post->post_type; 501 } 502 $classes[] = 'type-' . $post->post_type; 503 $classes[] = 'status-' . $post->post_status; 504 505 // Post Format 506 if ( post_type_supports( $post->post_type, 'post-formats' ) ) { 507 $post_format = get_post_format( $post->ID ); 508 509 if ( $post_format && ! is_wp_error( $post_format ) ) { 510 $classes[] = 'format-' . sanitize_html_class( $post_format ); 511 } else { 512 $classes[] = 'format-standard'; 513 } 514 } 515 516 $post_password_required = post_password_required( $post->ID ); 517 518 // Post requires password. 519 if ( $post_password_required ) { 520 $classes[] = 'post-password-required'; 521 } elseif ( ! empty( $post->post_password ) ) { 522 $classes[] = 'post-password-protected'; 523 } 524 525 // Post thumbnails. 526 if ( current_theme_supports( 'post-thumbnails' ) && has_post_thumbnail( $post->ID ) && ! is_attachment( $post ) && ! $post_password_required ) { 527 $classes[] = 'has-post-thumbnail'; 528 } 529 530 // sticky for Sticky Posts 531 if ( is_sticky( $post->ID ) ) { 532 if ( is_home() && ! is_paged() ) { 533 $classes[] = 'sticky'; 534 } elseif ( is_admin() ) { 535 $classes[] = 'status-sticky'; 536 } 537 } 538 539 // hentry for hAtom compliance 540 $classes[] = 'hentry'; 541 542 // All public taxonomies 543 $taxonomies = get_taxonomies( array( 'public' => true ) ); 544 foreach ( (array) $taxonomies as $taxonomy ) { 545 if ( is_object_in_taxonomy( $post->post_type, $taxonomy ) ) { 546 foreach ( (array) get_the_terms( $post->ID, $taxonomy ) as $term ) { 547 if ( empty( $term->slug ) ) { 548 continue; 549 } 550 551 $term_class = sanitize_html_class( $term->slug, $term->term_id ); 552 if ( is_numeric( $term_class ) || ! trim( $term_class, '-' ) ) { 553 $term_class = $term->term_id; 554 } 555 556 // 'post_tag' uses the 'tag' prefix for backward compatibility. 557 if ( 'post_tag' == $taxonomy ) { 558 $classes[] = 'tag-' . $term_class; 559 } else { 560 $classes[] = sanitize_html_class( $taxonomy . '-' . $term_class, $taxonomy . '-' . $term->term_id ); 561 } 562 } 563 } 564 } 565 566 $classes = array_map( 'esc_attr', $classes ); 567 568 /** 569 * Filters the list of CSS class names for the current post. 570 * 571 * @since 2.7.0 572 * 573 * @param string[] $classes An array of post class names. 574 * @param string[] $class An array of additional class names added to the post. 575 * @param int $post_id The post ID. 576 */ 577 $classes = apply_filters( 'post_class', $classes, $class, $post->ID ); 578 579 return array_unique( $classes ); 580 } 581 582 /** 583 * Displays the class names for the body element. 584 * 585 * @since 2.8.0 586 * 587 * @param string|string[] $class Space-separated string or array of class names to add to the class list. 588 */ 589 function body_class( $class = '' ) { 590 // Separates class names with a single space, collates class names for body element 591 echo 'class="' . join( ' ', get_body_class( $class ) ) . '"'; 592 } 593 594 /** 595 * Retrieves an array of the class names for the body element. 596 * 597 * @since 2.8.0 598 * 599 * @global WP_Query $wp_query WordPress Query object. 600 * 601 * @param string|string[] $class Space-separated string or array of class names to add to the class list. 602 * @return string[] Array of class names. 603 */ 604 function get_body_class( $class = '' ) { 605 global $wp_query; 606 607 $classes = array(); 608 609 if ( is_rtl() ) { 610 $classes[] = 'rtl'; 611 } 612 613 if ( is_front_page() ) { 614 $classes[] = 'home'; 615 } 616 if ( is_home() ) { 617 $classes[] = 'blog'; 618 } 619 if ( is_privacy_policy() ) { 620 $classes[] = 'privacy-policy'; 621 } 622 if ( is_archive() ) { 623 $classes[] = 'archive'; 624 } 625 if ( is_date() ) { 626 $classes[] = 'date'; 627 } 628 if ( is_search() ) { 629 $classes[] = 'search'; 630 $classes[] = $wp_query->posts ? 'search-results' : 'search-no-results'; 631 } 632 if ( is_paged() ) { 633 $classes[] = 'paged'; 634 } 635 if ( is_attachment() ) { 636 $classes[] = 'attachment'; 637 } 638 if ( is_404() ) { 639 $classes[] = 'error404'; 640 } 641 642 if ( is_singular() ) { 643 $post_id = $wp_query->get_queried_object_id(); 644 $post = $wp_query->get_queried_object(); 645 $post_type = $post->post_type; 646 647 if ( is_page_template() ) { 648 $classes[] = "{$post_type}-template"; 649 650 $template_slug = get_page_template_slug( $post_id ); 651 $template_parts = explode( '/', $template_slug ); 652 653 foreach ( $template_parts as $part ) { 654 $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( array( '.', '/' ), '-', basename( $part, '.php' ) ) ); 655 } 656 $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( '.', '-', $template_slug ) ); 657 } else { 658 $classes[] = "{$post_type}-template-default"; 659 } 660 661 if ( is_single() ) { 662 $classes[] = 'single'; 663 if ( isset( $post->post_type ) ) { 664 $classes[] = 'single-' . sanitize_html_class( $post->post_type, $post_id ); 665 $classes[] = 'postid-' . $post_id; 666 667 // Post Format 668 if ( post_type_supports( $post->post_type, 'post-formats' ) ) { 669 $post_format = get_post_format( $post->ID ); 670 671 if ( $post_format && ! is_wp_error( $post_format ) ) { 672 $classes[] = 'single-format-' . sanitize_html_class( $post_format ); 673 } else { 674 $classes[] = 'single-format-standard'; 675 } 676 } 677 } 678 } 679 680 if ( is_attachment() ) { 681 $mime_type = get_post_mime_type( $post_id ); 682 $mime_prefix = array( 'application/', 'image/', 'text/', 'audio/', 'video/', 'music/' ); 683 $classes[] = 'attachmentid-' . $post_id; 684 $classes[] = 'attachment-' . str_replace( $mime_prefix, '', $mime_type ); 685 } elseif ( is_page() ) { 686 $classes[] = 'page'; 687 688 $page_id = $wp_query->get_queried_object_id(); 689 690 $post = get_post( $page_id ); 691 692 $classes[] = 'page-id-' . $page_id; 693 694 if ( get_pages( 695 array( 696 'parent' => $page_id, 697 'number' => 1, 698 ) 699 ) ) { 700 $classes[] = 'page-parent'; 701 } 702 703 if ( $post->post_parent ) { 704 $classes[] = 'page-child'; 705 $classes[] = 'parent-pageid-' . $post->post_parent; 706 } 707 } 708 } elseif ( is_archive() ) { 709 if ( is_post_type_archive() ) { 710 $classes[] = 'post-type-archive'; 711 $post_type = get_query_var( 'post_type' ); 712 if ( is_array( $post_type ) ) { 713 $post_type = reset( $post_type ); 714 } 715 $classes[] = 'post-type-archive-' . sanitize_html_class( $post_type ); 716 } elseif ( is_author() ) { 717 $author = $wp_query->get_queried_object(); 718 $classes[] = 'author'; 719 if ( isset( $author->user_nicename ) ) { 720 $classes[] = 'author-' . sanitize_html_class( $author->user_nicename, $author->ID ); 721 $classes[] = 'author-' . $author->ID; 722 } 723 } elseif ( is_category() ) { 724 $cat = $wp_query->get_queried_object(); 725 $classes[] = 'category'; 726 if ( isset( $cat->term_id ) ) { 727 $cat_class = sanitize_html_class( $cat->slug, $cat->term_id ); 728 if ( is_numeric( $cat_class ) || ! trim( $cat_class, '-' ) ) { 729 $cat_class = $cat->term_id; 730 } 731 732 $classes[] = 'category-' . $cat_class; 733 $classes[] = 'category-' . $cat->term_id; 734 } 735 } elseif ( is_tag() ) { 736 $tag = $wp_query->get_queried_object(); 737 $classes[] = 'tag'; 738 if ( isset( $tag->term_id ) ) { 739 $tag_class = sanitize_html_class( $tag->slug, $tag->term_id ); 740 if ( is_numeric( $tag_class ) || ! trim( $tag_class, '-' ) ) { 741 $tag_class = $tag->term_id; 742 } 743 744 $classes[] = 'tag-' . $tag_class; 745 $classes[] = 'tag-' . $tag->term_id; 746 } 747 } elseif ( is_tax() ) { 748 $term = $wp_query->get_queried_object(); 749 if ( isset( $term->term_id ) ) { 750 $term_class = sanitize_html_class( $term->slug, $term->term_id ); 751 if ( is_numeric( $term_class ) || ! trim( $term_class, '-' ) ) { 752 $term_class = $term->term_id; 753 } 754 755 $classes[] = 'tax-' . sanitize_html_class( $term->taxonomy ); 756 $classes[] = 'term-' . $term_class; 757 $classes[] = 'term-' . $term->term_id; 758 } 759 } 760 } 761 762 if ( is_user_logged_in() ) { 763 $classes[] = 'logged-in'; 764 } 765 766 if ( is_admin_bar_showing() ) { 767 $classes[] = 'admin-bar'; 768 $classes[] = 'no-customize-support'; 769 } 770 771 if ( current_theme_supports( 'custom-background' ) 772 && ( get_background_color() !== get_theme_support( 'custom-background', 'default-color' ) || get_background_image() ) ) { 773 $classes[] = 'custom-background'; 774 } 775 776 if ( has_custom_logo() ) { 777 $classes[] = 'wp-custom-logo'; 778 } 779 780 if ( current_theme_supports( 'responsive-embeds' ) ) { 781 $classes[] = 'wp-embed-responsive'; 782 } 783 784 $page = $wp_query->get( 'page' ); 785 786 if ( ! $page || $page < 2 ) { 787 $page = $wp_query->get( 'paged' ); 788 } 789 790 if ( $page && $page > 1 && ! is_404() ) { 791 $classes[] = 'paged-' . $page; 792 793 if ( is_single() ) { 794 $classes[] = 'single-paged-' . $page; 795 } elseif ( is_page() ) { 796 $classes[] = 'page-paged-' . $page; 797 } elseif ( is_category() ) { 798 $classes[] = 'category-paged-' . $page; 799 } elseif ( is_tag() ) { 800 $classes[] = 'tag-paged-' . $page; 801 } elseif ( is_date() ) { 802 $classes[] = 'date-paged-' . $page; 803 } elseif ( is_author() ) { 804 $classes[] = 'author-paged-' . $page; 805 } elseif ( is_search() ) { 806 $classes[] = 'search-paged-' . $page; 807 } elseif ( is_post_type_archive() ) { 808 $classes[] = 'post-type-paged-' . $page; 809 } 810 } 811 812 if ( ! empty( $class ) ) { 813 if ( ! is_array( $class ) ) { 814 $class = preg_split( '#\s+#', $class ); 815 } 816 $classes = array_merge( $classes, $class ); 817 } else { 818 // Ensure that we always coerce class to being an array. 819 $class = array(); 820 } 821 822 $classes = array_map( 'esc_attr', $classes ); 823 824 /** 825 * Filters the list of CSS body class names for the current post or page. 826 * 827 * @since 2.8.0 828 * 829 * @param string[] $classes An array of body class names. 830 * @param string[] $class An array of additional class names added to the body. 831 */ 832 $classes = apply_filters( 'body_class', $classes, $class ); 833 834 return array_unique( $classes ); 835 } 836 837 /** 838 * Whether post requires password and correct password has been provided. 839 * 840 * @since 2.7.0 841 * 842 * @param int|WP_Post|null $post An optional post. Global $post used if not provided. 843 * @return bool false if a password is not required or the correct password cookie is present, true otherwise. 844 */ 845 function post_password_required( $post = null ) { 846 $post = get_post( $post ); 847 848 if ( empty( $post->post_password ) ) { 849 /** This filter is documented in wp-includes/post-template.php */ 850 return apply_filters( 'post_password_required', false, $post ); 851 } 852 853 if ( ! isset( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] ) ) { 854 /** This filter is documented in wp-includes/post-template.php */ 855 return apply_filters( 'post_password_required', true, $post ); 856 } 857 858 require_once ABSPATH . WPINC . '/class-phpass.php'; 859 $hasher = new PasswordHash( 8, true ); 860 861 $hash = wp_unslash( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] ); 862 if ( 0 !== strpos( $hash, '$P$B' ) ) { 863 $required = true; 864 } else { 865 $required = ! $hasher->CheckPassword( $post->post_password, $hash ); 866 } 867 868 /** 869 * Filters whether a post requires the user to supply a password. 870 * 871 * @since 4.7.0 872 * 873 * @param bool $required Whether the user needs to supply a password. True if password has not been 874 * provided or is incorrect, false if password has been supplied or is not required. 875 * @param WP_Post $post Post data. 876 */ 877 return apply_filters( 'post_password_required', $required, $post ); 878 } 879 880 // 881 // Page Template Functions for usage in Themes 882 // 883 884 /** 885 * The formatted output of a list of pages. 886 * 887 * Displays page links for paginated posts (i.e. including the `<!--nextpage-->` 888 * Quicktag one or more times). This tag must be within The Loop. 889 * 890 * @since 1.2.0 891 * @since 5.1.0 Added the `aria_current` argument. 892 * 893 * @global int $page 894 * @global int $numpages 895 * @global int $multipage 896 * @global int $more 897 * 898 * @param string|array $args { 899 * Optional. Array or string of default arguments. 900 * 901 * @type string $before HTML or text to prepend to each link. Default is `<p> Pages:`. 902 * @type string $after HTML or text to append to each link. Default is `</p>`. 903 * @type string $link_before HTML or text to prepend to each link, inside the `<a>` tag. 904 * Also prepended to the current item, which is not linked. Default empty. 905 * @type string $link_after HTML or text to append to each Pages link inside the `<a>` tag. 906 * Also appended to the current item, which is not linked. Default empty. 907 * @type string $aria_current The value for the aria-current attribute. Possible values are 'page', 908 * 'step', 'location', 'date', 'time', 'true', 'false'. Default is 'page'. 909 * @type string $next_or_number Indicates whether page numbers should be used. Valid values are number 910 * and next. Default is 'number'. 911 * @type string $separator Text between pagination links. Default is ' '. 912 * @type string $nextpagelink Link text for the next page link, if available. Default is 'Next Page'. 913 * @type string $previouspagelink Link text for the previous page link, if available. Default is 'Previous Page'. 914 * @type string $pagelink Format string for page numbers. The % in the parameter string will be 915 * replaced with the page number, so 'Page %' generates "Page 1", "Page 2", etc. 916 * Defaults to '%', just the page number. 917 * @type int|bool $echo Whether to echo or not. Accepts 1|true or 0|false. Default 1|true. 918 * } 919 * @return string Formatted output in HTML. 920 */ 921 function wp_link_pages( $args = '' ) { 922 global $page, $numpages, $multipage, $more; 923 924 $defaults = array( 925 'before' => '<p class="post-nav-links">' . __( 'Pages:' ), 926 'after' => '</p>', 927 'link_before' => '', 928 'link_after' => '', 929 'aria_current' => 'page', 930 'next_or_number' => 'number', 931 'separator' => ' ', 932 'nextpagelink' => __( 'Next page' ), 933 'previouspagelink' => __( 'Previous page' ), 934 'pagelink' => '%', 935 'echo' => 1, 936 ); 937 938 $parsed_args = wp_parse_args( $args, $defaults ); 939 940 /** 941 * Filters the arguments used in retrieving page links for paginated posts. 942 * 943 * @since 3.0.0 944 * 945 * @param array $parsed_args An array of arguments for page links for paginated posts. 946 */ 947 $parsed_args = apply_filters( 'wp_link_pages_args', $parsed_args ); 948 949 $output = ''; 950 if ( $multipage ) { 951 if ( 'number' == $parsed_args['next_or_number'] ) { 952 $output .= $parsed_args['before']; 953 for ( $i = 1; $i <= $numpages; $i++ ) { 954 $link = $parsed_args['link_before'] . str_replace( '%', $i, $parsed_args['pagelink'] ) . $parsed_args['link_after']; 955 if ( $i != $page || ! $more && 1 == $page ) { 956 $link = _wp_link_page( $i ) . $link . '</a>'; 957 } elseif ( $i === $page ) { 958 $link = '<span class="post-page-numbers current" aria-current="' . esc_attr( $parsed_args['aria_current'] ) . '">' . $link . '</span>'; 959 } 960 /** 961 * Filters the HTML output of individual page number links. 962 * 963 * @since 3.6.0 964 * 965 * @param string $link The page number HTML output. 966 * @param int $i Page number for paginated posts' page links. 967 */ 968 $link = apply_filters( 'wp_link_pages_link', $link, $i ); 969 970 // Use the custom links separator beginning with the second link. 971 $output .= ( 1 === $i ) ? ' ' : $parsed_args['separator']; 972 $output .= $link; 973 } 974 $output .= $parsed_args['after']; 975 } elseif ( $more ) { 976 $output .= $parsed_args['before']; 977 $prev = $page - 1; 978 if ( $prev > 0 ) { 979 $link = _wp_link_page( $prev ) . $parsed_args['link_before'] . $parsed_args['previouspagelink'] . $parsed_args['link_after'] . '</a>'; 980 981 /** This filter is documented in wp-includes/post-template.php */ 982 $output .= apply_filters( 'wp_link_pages_link', $link, $prev ); 983 } 984 $next = $page + 1; 985 if ( $next <= $numpages ) { 986 if ( $prev ) { 987 $output .= $parsed_args['separator']; 988 } 989 $link = _wp_link_page( $next ) . $parsed_args['link_before'] . $parsed_args['nextpagelink'] . $parsed_args['link_after'] . '</a>'; 990 991 /** This filter is documented in wp-includes/post-template.php */ 992 $output .= apply_filters( 'wp_link_pages_link', $link, $next ); 993 } 994 $output .= $parsed_args['after']; 995 } 996 } 997 998 /** 999 * Filters the HTML output of page links for paginated posts. 1000 * 1001 * @since 3.6.0 1002 * 1003 * @param string $output HTML output of paginated posts' page links. 1004 * @param array $args An array of arguments. 1005 */ 1006 $html = apply_filters( 'wp_link_pages', $output, $args ); 1007 1008 if ( $parsed_args['echo'] ) { 1009 echo $html; 1010 } 1011 return $html; 1012 } 1013 1014 /** 1015 * Helper function for wp_link_pages(). 1016 * 1017 * @since 3.1.0 1018 * @access private 1019 * 1020 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1021 * 1022 * @param int $i Page number. 1023 * @return string Link. 1024 */ 1025 function _wp_link_page( $i ) { 1026 global $wp_rewrite; 1027 $post = get_post(); 1028 $query_args = array(); 1029 1030 if ( 1 == $i ) { 1031 $url = get_permalink(); 1032 } else { 1033 if ( '' == get_option( 'permalink_structure' ) || in_array( $post->post_status, array( 'draft', 'pending' ) ) ) { 1034 $url = add_query_arg( 'page', $i, get_permalink() ); 1035 } elseif ( 'page' == get_option( 'show_on_front' ) && get_option( 'page_on_front' ) == $post->ID ) { 1036 $url = trailingslashit( get_permalink() ) . user_trailingslashit( "$wp_rewrite->pagination_base/" . $i, 'single_paged' ); 1037 } else { 1038 $url = trailingslashit( get_permalink() ) . user_trailingslashit( $i, 'single_paged' ); 1039 } 1040 } 1041 1042 if ( is_preview() ) { 1043 1044 if ( ( 'draft' !== $post->post_status ) && isset( $_GET['preview_id'], $_GET['preview_nonce'] ) ) { 1045 $query_args['preview_id'] = wp_unslash( $_GET['preview_id'] ); 1046 $query_args['preview_nonce'] = wp_unslash( $_GET['preview_nonce'] ); 1047 } 1048 1049 $url = get_preview_post_link( $post, $query_args, $url ); 1050 } 1051 1052 return '<a href="' . esc_url( $url ) . '" class="post-page-numbers">'; 1053 } 1054 1055 // 1056 // Post-meta: Custom per-post fields. 1057 // 1058 1059 /** 1060 * Retrieve post custom meta data field. 1061 * 1062 * @since 1.5.0 1063 * 1064 * @param string $key Meta data key name. 1065 * @return false|string|array Array of values or single value, if only one element exists. False will be returned if key does not exist. 1066 */ 1067 function post_custom( $key = '' ) { 1068 $custom = get_post_custom(); 1069 1070 if ( ! isset( $custom[ $key ] ) ) { 1071 return false; 1072 } elseif ( 1 == count( $custom[ $key ] ) ) { 1073 return $custom[ $key ][0]; 1074 } else { 1075 return $custom[ $key ]; 1076 } 1077 } 1078 1079 /** 1080 * Display a list of post custom fields. 1081 * 1082 * @since 1.2.0 1083 * 1084 * @internal This will probably change at some point... 1085 */ 1086 function the_meta() { 1087 $keys = get_post_custom_keys(); 1088 if ( $keys ) { 1089 $li_html = ''; 1090 foreach ( (array) $keys as $key ) { 1091 $keyt = trim( $key ); 1092 if ( is_protected_meta( $keyt, 'post' ) ) { 1093 continue; 1094 } 1095 1096 $values = array_map( 'trim', get_post_custom_values( $key ) ); 1097 $value = implode( ', ', $values ); 1098 1099 $html = sprintf( 1100 "<li><span class='post-meta-key'>%s</span> %s</li>\n", 1101 /* translators: %s: Post custom field name. */ 1102 sprintf( _x( '%s:', 'Post custom field name' ), $key ), 1103 $value 1104 ); 1105 1106 /** 1107 * Filters the HTML output of the li element in the post custom fields list. 1108 * 1109 * @since 2.2.0 1110 * 1111 * @param string $html The HTML output for the li element. 1112 * @param string $key Meta key. 1113 * @param string $value Meta value. 1114 */ 1115 $li_html .= apply_filters( 'the_meta_key', $html, $key, $value ); 1116 } 1117 1118 if ( $li_html ) { 1119 echo "<ul class='post-meta'>\n{$li_html}</ul>\n"; 1120 } 1121 } 1122 } 1123 1124 // 1125 // Pages 1126 // 1127 1128 /** 1129 * Retrieve or display a list of pages as a dropdown (select list). 1130 * 1131 * @since 2.1.0 1132 * @since 4.2.0 The `$value_field` argument was added. 1133 * @since 4.3.0 The `$class` argument was added. 1134 * 1135 * @see get_pages() 1136 * 1137 * @param array|string $args { 1138 * Optional. Array or string of arguments to generate a page dropdown. See `get_pages()` for additional arguments. 1139 * 1140 * @type int $depth Maximum depth. Default 0. 1141 * @type int $child_of Page ID to retrieve child pages of. Default 0. 1142 * @type int|string $selected Value of the option that should be selected. Default 0. 1143 * @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, 1144 * or their bool equivalents. Default 1. 1145 * @type string $name Value for the 'name' attribute of the select element. 1146 * Default 'page_id'. 1147 * @type string $id Value for the 'id' attribute of the select element. 1148 * @type string $class Value for the 'class' attribute of the select element. Default: none. 1149 * Defaults to the value of `$name`. 1150 * @type string $show_option_none Text to display for showing no pages. Default empty (does not display). 1151 * @type string $show_option_no_change Text to display for "no change" option. Default empty (does not display). 1152 * @type string $option_none_value Value to use when no page is selected. Default empty. 1153 * @type string $value_field Post field used to populate the 'value' attribute of the option 1154 * elements. Accepts any valid post field. Default 'ID'. 1155 * } 1156 * @return string HTML content, if not displaying. 1157 */ 1158 function wp_dropdown_pages( $args = '' ) { 1159 $defaults = array( 1160 'depth' => 0, 1161 'child_of' => 0, 1162 'selected' => 0, 1163 'echo' => 1, 1164 'name' => 'page_id', 1165 'id' => '', 1166 'class' => '', 1167 'show_option_none' => '', 1168 'show_option_no_change' => '', 1169 'option_none_value' => '', 1170 'value_field' => 'ID', 1171 ); 1172 1173 $parsed_args = wp_parse_args( $args, $defaults ); 1174 1175 $pages = get_pages( $parsed_args ); 1176 $output = ''; 1177 // Back-compat with old system where both id and name were based on $name argument 1178 if ( empty( $parsed_args['id'] ) ) { 1179 $parsed_args['id'] = $parsed_args['name']; 1180 } 1181 1182 if ( ! empty( $pages ) ) { 1183 $class = ''; 1184 if ( ! empty( $parsed_args['class'] ) ) { 1185 $class = " class='" . esc_attr( $parsed_args['class'] ) . "'"; 1186 } 1187 1188 $output = "<select name='" . esc_attr( $parsed_args['name'] ) . "'" . $class . " id='" . esc_attr( $parsed_args['id'] ) . "'>\n"; 1189 if ( $parsed_args['show_option_no_change'] ) { 1190 $output .= "\t<option value=\"-1\">" . $parsed_args['show_option_no_change'] . "</option>\n"; 1191 } 1192 if ( $parsed_args['show_option_none'] ) { 1193 $output .= "\t<option value=\"" . esc_attr( $parsed_args['option_none_value'] ) . '">' . $parsed_args['show_option_none'] . "</option>\n"; 1194 } 1195 $output .= walk_page_dropdown_tree( $pages, $parsed_args['depth'], $parsed_args ); 1196 $output .= "</select>\n"; 1197 } 1198 1199 /** 1200 * Filters the HTML output of a list of pages as a drop down. 1201 * 1202 * @since 2.1.0 1203 * @since 4.4.0 `$parsed_args` and `$pages` added as arguments. 1204 * 1205 * @param string $output HTML output for drop down list of pages. 1206 * @param array $parsed_args The parsed arguments array. 1207 * @param array $pages List of WP_Post objects returned by `get_pages()` 1208 */ 1209 $html = apply_filters( 'wp_dropdown_pages', $output, $parsed_args, $pages ); 1210 1211 if ( $parsed_args['echo'] ) { 1212 echo $html; 1213 } 1214 return $html; 1215 } 1216 1217 /** 1218 * Retrieve or display a list of pages (or hierarchical post type items) in list (li) format. 1219 * 1220 * @since 1.5.0 1221 * @since 4.7.0 Added the `item_spacing` argument. 1222 * 1223 * @see get_pages() 1224 * 1225 * @global WP_Query $wp_query WordPress Query object. 1226 * 1227 * @param array|string $args { 1228 * Optional. Array or string of arguments to generate a list of pages. See `get_pages()` for additional arguments. 1229 * 1230 * @type int $child_of Display only the sub-pages of a single page by ID. Default 0 (all pages). 1231 * @type string $authors Comma-separated list of author IDs. Default empty (all authors). 1232 * @type string $date_format PHP date format to use for the listed pages. Relies on the 'show_date' parameter. 1233 * Default is the value of 'date_format' option. 1234 * @type int $depth Number of levels in the hierarchy of pages to include in the generated list. 1235 * Accepts -1 (any depth), 0 (all pages), 1 (top-level pages only), and n (pages to 1236 * the given n depth). Default 0. 1237 * @type bool $echo Whether or not to echo the list of pages. Default true. 1238 * @type string $exclude Comma-separated list of page IDs to exclude. Default empty. 1239 * @type array $include Comma-separated list of page IDs to include. Default empty. 1240 * @type string $link_after Text or HTML to follow the page link label. Default null. 1241 * @type string $link_before Text or HTML to precede the page link label. Default null. 1242 * @type string $post_type Post type to query for. Default 'page'. 1243 * @type string|array $post_status Comma-separated list or array of post statuses to include. Default 'publish'. 1244 * @type string $show_date Whether to display the page publish or modified date for each page. Accepts 1245 * 'modified' or any other value. An empty value hides the date. Default empty. 1246 * @type string $sort_column Comma-separated list of column names to sort the pages by. Accepts 'post_author', 1247 * 'post_date', 'post_title', 'post_name', 'post_modified', 'post_modified_gmt', 1248 * 'menu_order', 'post_parent', 'ID', 'rand', or 'comment_count'. Default 'post_title'. 1249 * @type string $title_li List heading. Passing a null or empty value will result in no heading, and the list 1250 * will not be wrapped with unordered list `<ul>` tags. Default 'Pages'. 1251 * @type string $item_spacing Whether to preserve whitespace within the menu's HTML. Accepts 'preserve' or 'discard'. 1252 * Default 'preserve'. 1253 * @type Walker $walker Walker instance to use for listing pages. Default empty (Walker_Page). 1254 * } 1255 * @return string|void HTML list of pages. 1256 */ 1257 function wp_list_pages( $args = '' ) { 1258 $defaults = array( 1259 'depth' => 0, 1260 'show_date' => '', 1261 'date_format' => get_option( 'date_format' ), 1262 'child_of' => 0, 1263 'exclude' => '', 1264 'title_li' => __( 'Pages' ), 1265 'echo' => 1, 1266 'authors' => '', 1267 'sort_column' => 'menu_order, post_title', 1268 'link_before' => '', 1269 'link_after' => '', 1270 'item_spacing' => 'preserve', 1271 'walker' => '', 1272 ); 1273 1274 $parsed_args = wp_parse_args( $args, $defaults ); 1275 1276 if ( ! in_array( $parsed_args['item_spacing'], array( 'preserve', 'discard' ), true ) ) { 1277 // invalid value, fall back to default. 1278 $parsed_args['item_spacing'] = $defaults['item_spacing']; 1279 } 1280 1281 $output = ''; 1282 $current_page = 0; 1283 1284 // sanitize, mostly to keep spaces out 1285 $parsed_args['exclude'] = preg_replace( '/[^0-9,]/', '', $parsed_args['exclude'] ); 1286 1287 // Allow plugins to filter an array of excluded pages (but don't put a nullstring into the array) 1288 $exclude_array = ( $parsed_args['exclude'] ) ? explode( ',', $parsed_args['exclude'] ) : array(); 1289 1290 /** 1291 * Filters the array of pages to exclude from the pages list. 1292 * 1293 * @since 2.1.0 1294 * 1295 * @param array $exclude_array An array of page IDs to exclude. 1296 */ 1297 $parsed_args['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) ); 1298 1299 $parsed_args['hierarchical'] = 0; 1300 1301 // Query pages. 1302 $pages = get_pages( $parsed_args ); 1303 1304 if ( ! empty( $pages ) ) { 1305 if ( $parsed_args['title_li'] ) { 1306 $output .= '<li class="pagenav">' . $parsed_args['title_li'] . '<ul>'; 1307 } 1308 global $wp_query; 1309 if ( is_page() || is_attachment() || $wp_query->is_posts_page ) { 1310 $current_page = get_queried_object_id(); 1311 } elseif ( is_singular() ) { 1312 $queried_object = get_queried_object(); 1313 if ( is_post_type_hierarchical( $queried_object->post_type ) ) { 1314 $current_page = $queried_object->ID; 1315 } 1316 } 1317 1318 $output .= walk_page_tree( $pages, $parsed_args['depth'], $current_page, $parsed_args ); 1319 1320 if ( $parsed_args['title_li'] ) { 1321 $output .= '</ul></li>'; 1322 } 1323 } 1324 1325 /** 1326 * Filters the HTML output of the pages to list. 1327 * 1328 * @since 1.5.1 1329 * @since 4.4.0 `$pages` added as arguments. 1330 * 1331 * @see wp_list_pages() 1332 * 1333 * @param string $output HTML output of the pages list. 1334 * @param array $parsed_args An array of page-listing arguments. 1335 * @param array $pages List of WP_Post objects returned by `get_pages()` 1336 */ 1337 $html = apply_filters( 'wp_list_pages', $output, $parsed_args, $pages ); 1338 1339 if ( $parsed_args['echo'] ) { 1340 echo $html; 1341 } else { 1342 return $html; 1343 } 1344 } 1345 1346 /** 1347 * Displays or retrieves a list of pages with an optional home link. 1348 * 1349 * The arguments are listed below and part of the arguments are for wp_list_pages() function. 1350 * Check that function for more info on those arguments. 1351 * 1352 * @since 2.7.0 1353 * @since 4.4.0 Added `menu_id`, `container`, `before`, `after`, and `walker` arguments. 1354 * @since 4.7.0 Added the `item_spacing` argument. 1355 * 1356 * @param array|string $args { 1357 * Optional. Array or string of arguments to generate a page menu. See `wp_list_pages()` for additional arguments. 1358 * 1359 * @type string $sort_column How to sort the list of pages. Accepts post column names. 1360 * Default 'menu_order, post_title'. 1361 * @type string $menu_id ID for the div containing the page list. Default is empty string. 1362 * @type string $menu_class Class to use for the element containing the page list. Default 'menu'. 1363 * @type string $container Element to use for the element containing the page list. Default 'div'. 1364 * @type bool $echo Whether to echo the list or return it. Accepts true (echo) or false (return). 1365 * Default true. 1366 * @type int|bool|string $show_home Whether to display the link to the home page. Can just enter the text 1367 * you'd like shown for the home link. 1|true defaults to 'Home'. 1368 * @type string $link_before The HTML or text to prepend to $show_home text. Default empty. 1369 * @type string $link_after The HTML or text to append to $show_home text. Default empty. 1370 * @type string $before The HTML or text to prepend to the menu. Default is '<ul>'. 1371 * @type string $after The HTML or text to append to the menu. Default is '</ul>'. 1372 * @type string $item_spacing Whether to preserve whitespace within the menu's HTML. Accepts 'preserve' 1373 * or 'discard'. Default 'discard'. 1374 * @type Walker $walker Walker instance to use for listing pages. Default empty (Walker_Page). 1375 * } 1376 * @return string|void HTML menu 1377 */ 1378 function wp_page_menu( $args = array() ) { 1379 $defaults = array( 1380 'sort_column' => 'menu_order, post_title', 1381 'menu_id' => '', 1382 'menu_class' => 'menu', 1383 'container' => 'div', 1384 'echo' => true, 1385 'link_before' => '', 1386 'link_after' => '', 1387 'before' => '<ul>', 1388 'after' => '</ul>', 1389 'item_spacing' => 'discard', 1390 'walker' => '', 1391 ); 1392 $args = wp_parse_args( $args, $defaults ); 1393 1394 if ( ! in_array( $args['item_spacing'], array( 'preserve', 'discard' ) ) ) { 1395 // invalid value, fall back to default. 1396 $args['item_spacing'] = $defaults['item_spacing']; 1397 } 1398 1399 if ( 'preserve' === $args['item_spacing'] ) { 1400 $t = "\t"; 1401 $n = "\n"; 1402 } else { 1403 $t = ''; 1404 $n = ''; 1405 } 1406 1407 /** 1408 * Filters the arguments used to generate a page-based menu. 1409 * 1410 * @since 2.7.0 1411 * 1412 * @see wp_page_menu() 1413 * 1414 * @param array $args An array of page menu arguments. 1415 */ 1416 $args = apply_filters( 'wp_page_menu_args', $args ); 1417 1418 $menu = ''; 1419 1420 $list_args = $args; 1421 1422 // Show Home in the menu 1423 if ( ! empty( $args['show_home'] ) ) { 1424 if ( true === $args['show_home'] || '1' === $args['show_home'] || 1 === $args['show_home'] ) { 1425 $text = __( 'Home' ); 1426 } else { 1427 $text = $args['show_home']; 1428 } 1429 $class = ''; 1430 if ( is_front_page() && ! is_paged() ) { 1431 $class = 'class="current_page_item"'; 1432 } 1433 $menu .= '<li ' . $class . '><a href="' . home_url( '/' ) . '">' . $args['link_before'] . $text . $args['link_after'] . '</a></li>'; 1434 // If the front page is a page, add it to the exclude list 1435 if ( get_option( 'show_on_front' ) == 'page' ) { 1436 if ( ! empty( $list_args['exclude'] ) ) { 1437 $list_args['exclude'] .= ','; 1438 } else { 1439 $list_args['exclude'] = ''; 1440 } 1441 $list_args['exclude'] .= get_option( 'page_on_front' ); 1442 } 1443 } 1444 1445 $list_args['echo'] = false; 1446 $list_args['title_li'] = ''; 1447 $menu .= wp_list_pages( $list_args ); 1448 1449 $container = sanitize_text_field( $args['container'] ); 1450 1451 // Fallback in case `wp_nav_menu()` was called without a container. 1452 if ( empty( $container ) ) { 1453 $container = 'div'; 1454 } 1455 1456 if ( $menu ) { 1457 1458 // wp_nav_menu doesn't set before and after 1459 if ( isset( $args['fallback_cb'] ) && 1460 'wp_page_menu' === $args['fallback_cb'] && 1461 'ul' !== $container ) { 1462 $args['before'] = "<ul>{$n}"; 1463 $args['after'] = '</ul>'; 1464 } 1465 1466 $menu = $args['before'] . $menu . $args['after']; 1467 } 1468 1469 $attrs = ''; 1470 if ( ! empty( $args['menu_id'] ) ) { 1471 $attrs .= ' id="' . esc_attr( $args['menu_id'] ) . '"'; 1472 } 1473 1474 if ( ! empty( $args['menu_class'] ) ) { 1475 $attrs .= ' class="' . esc_attr( $args['menu_class'] ) . '"'; 1476 } 1477 1478 $menu = "<{$container}{$attrs}>" . $menu . "</{$container}>{$n}"; 1479 1480 /** 1481 * Filters the HTML output of a page-based menu. 1482 * 1483 * @since 2.7.0 1484 * 1485 * @see wp_page_menu() 1486 * 1487 * @param string $menu The HTML output. 1488 * @param array $args An array of arguments. 1489 */ 1490 $menu = apply_filters( 'wp_page_menu', $menu, $args ); 1491 if ( $args['echo'] ) { 1492 echo $menu; 1493 } else { 1494 return $menu; 1495 } 1496 } 1497 1498 // 1499 // Page helpers 1500 // 1501 1502 /** 1503 * Retrieve HTML list content for page list. 1504 * 1505 * @uses Walker_Page to create HTML list content. 1506 * @since 2.1.0 1507 * 1508 * @param array $pages 1509 * @param int $depth 1510 * @param int $current_page 1511 * @param array $r 1512 * @return string 1513 */ 1514 function walk_page_tree( $pages, $depth, $current_page, $r ) { 1515 if ( empty( $r['walker'] ) ) { 1516 $walker = new Walker_Page; 1517 } else { 1518 $walker = $r['walker']; 1519 } 1520 1521 foreach ( (array) $pages as $page ) { 1522 if ( $page->post_parent ) { 1523 $r['pages_with_children'][ $page->post_parent ] = true; 1524 } 1525 } 1526 1527 return $walker->walk( $pages, $depth, $r, $current_page ); 1528 } 1529 1530 /** 1531 * Retrieve HTML dropdown (select) content for page list. 1532 * 1533 * @since 2.1.0 1534 * @since 5.3.0 Formalized the existing `...$args` parameter by adding it 1535 * to the function signature. 1536 * 1537 * @uses Walker_PageDropdown to create HTML dropdown content. 1538 * @see Walker_PageDropdown::walk() for parameters and return description. 1539 * 1540 * @return string 1541 */ 1542 function walk_page_dropdown_tree( ...$args ) { 1543 if ( empty( $args[2]['walker'] ) ) { // the user's options are the third parameter 1544 $walker = new Walker_PageDropdown; 1545 } else { 1546 $walker = $args[2]['walker']; 1547 } 1548 1549 return $walker->walk( ...$args ); 1550 } 1551 1552 // 1553 // Attachments 1554 // 1555 1556 /** 1557 * Display an attachment page link using an image or icon. 1558 * 1559 * @since 2.0.0 1560 * 1561 * @param int|WP_Post $id Optional. Post ID or post object. 1562 * @param bool $fullsize Optional, default is false. Whether to use full size. 1563 * @param bool $deprecated Deprecated. Not used. 1564 * @param bool $permalink Optional, default is false. Whether to include permalink. 1565 */ 1566 function the_attachment_link( $id = 0, $fullsize = false, $deprecated = false, $permalink = false ) { 1567 if ( ! empty( $deprecated ) ) { 1568 _deprecated_argument( __FUNCTION__, '2.5.0' ); 1569 } 1570 1571 if ( $fullsize ) { 1572 echo wp_get_attachment_link( $id, 'full', $permalink ); 1573 } else { 1574 echo wp_get_attachment_link( $id, 'thumbnail', $permalink ); 1575 } 1576 } 1577 1578 /** 1579 * Retrieve an attachment page link using an image or icon, if possible. 1580 * 1581 * @since 2.5.0 1582 * @since 4.4.0 The `$id` parameter can now accept either a post ID or `WP_Post` object. 1583 * 1584 * @param int|WP_Post $id Optional. Post ID or post object. 1585 * @param string|array $size Optional. Image size. Accepts any valid image size, or an array 1586 * of width and height values in pixels (in that order). 1587 * Default 'thumbnail'. 1588 * @param bool $permalink Optional, Whether to add permalink to image. Default false. 1589 * @param bool $icon Optional. Whether the attachment is an icon. Default false. 1590 * @param string|false $text Optional. Link text to use. Activated by passing a string, false otherwise. 1591 * Default false. 1592 * @param array|string $attr Optional. Array or string of attributes. Default empty. 1593 * @return string HTML content. 1594 */ 1595 function wp_get_attachment_link( $id = 0, $size = 'thumbnail', $permalink = false, $icon = false, $text = false, $attr = '' ) { 1596 $_post = get_post( $id ); 1597 1598 if ( empty( $_post ) || ( 'attachment' !== $_post->post_type ) || ! wp_get_attachment_url( $_post->ID ) ) { 1599 return __( 'Missing Attachment' ); 1600 } 1601 1602 $url = wp_get_attachment_url( $_post->ID ); 1603 1604 if ( $permalink ) { 1605 $url = get_attachment_link( $_post->ID ); 1606 } 1607 1608 if ( $text ) { 1609 $link_text = $text; 1610 } elseif ( $size && 'none' != $size ) { 1611 $link_text = wp_get_attachment_image( $_post->ID, $size, $icon, $attr ); 1612 } else { 1613 $link_text = ''; 1614 } 1615 1616 if ( '' === trim( $link_text ) ) { 1617 $link_text = $_post->post_title; 1618 } 1619 1620 if ( '' === trim( $link_text ) ) { 1621 $link_text = esc_html( pathinfo( get_attached_file( $_post->ID ), PATHINFO_FILENAME ) ); 1622 } 1623 /** 1624 * Filters a retrieved attachment page link. 1625 * 1626 * @since 2.7.0 1627 * @since 5.1.0 Added the $attr parameter. 1628 * 1629 * @param string $link_html The page link HTML output. 1630 * @param int $id Post ID. 1631 * @param string|array $size Size of the image. Image size or array of width and height values (in that order). 1632 * Default 'thumbnail'. 1633 * @param bool $permalink Whether to add permalink to image. Default false. 1634 * @param bool $icon Whether to include an icon. Default false. 1635 * @param string|bool $text If string, will be link text. Default false. 1636 * @param array|string $attr Array or string of attributes. Default empty. 1637 */ 1638 return apply_filters( 'wp_get_attachment_link', "<a href='" . esc_url( $url ) . "'>$link_text</a>", $id, $size, $permalink, $icon, $text, $attr ); 1639 } 1640 1641 /** 1642 * Wrap attachment in paragraph tag before content. 1643 * 1644 * @since 2.0.0 1645 * 1646 * @param string $content 1647 * @return string 1648 */ 1649 function prepend_attachment( $content ) { 1650 $post = get_post(); 1651 1652 if ( empty( $post->post_type ) || $post->post_type != 'attachment' ) { 1653 return $content; 1654 } 1655 1656 if ( wp_attachment_is( 'video', $post ) ) { 1657 $meta = wp_get_attachment_metadata( get_the_ID() ); 1658 $atts = array( 'src' => wp_get_attachment_url() ); 1659 if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) { 1660 $atts['width'] = (int) $meta['width']; 1661 $atts['height'] = (int) $meta['height']; 1662 } 1663 if ( has_post_thumbnail() ) { 1664 $atts['poster'] = wp_get_attachment_url( get_post_thumbnail_id() ); 1665 } 1666 $p = wp_video_shortcode( $atts ); 1667 } elseif ( wp_attachment_is( 'audio', $post ) ) { 1668 $p = wp_audio_shortcode( array( 'src' => wp_get_attachment_url() ) ); 1669 } else { 1670 $p = '<p class="attachment">'; 1671 // show the medium sized image representation of the attachment if available, and link to the raw file 1672 $p .= wp_get_attachment_link( 0, 'medium', false ); 1673 $p .= '</p>'; 1674 } 1675 1676 /** 1677 * Filters the attachment markup to be prepended to the post content. 1678 * 1679 * @since 2.0.0 1680 * 1681 * @see prepend_attachment() 1682 * 1683 * @param string $p The attachment HTML output. 1684 */ 1685 $p = apply_filters( 'prepend_attachment', $p ); 1686 1687 return "$p\n$content"; 1688 } 1689 1690 // 1691 // Misc 1692 // 1693 1694 /** 1695 * Retrieve protected post password form content. 1696 * 1697 * @since 1.0.0 1698 * 1699 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 1700 * @return string HTML content for password form for password protected post. 1701 */ 1702 function get_the_password_form( $post = 0 ) { 1703 $post = get_post( $post ); 1704 $label = 'pwbox-' . ( empty( $post->ID ) ? rand() : $post->ID ); 1705 $output = '<form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" class="post-password-form" method="post"> 1706 <p>' . __( 'This content is password protected. To view it please enter your password below:' ) . '</p> 1707 <p><label for="' . $label . '">' . __( 'Password:' ) . ' <input name="post_password" id="' . $label . '" type="password" size="20" /></label> <input type="submit" name="Submit" value="' . esc_attr_x( 'Enter', 'post password form' ) . '" /></p></form> 1708 '; 1709 1710 /** 1711 * Filters the HTML output for the protected post password form. 1712 * 1713 * If modifying the password field, please note that the core database schema 1714 * limits the password field to 20 characters regardless of the value of the 1715 * size attribute in the form input. 1716 * 1717 * @since 2.7.0 1718 * 1719 * @param string $output The password form HTML output. 1720 */ 1721 return apply_filters( 'the_password_form', $output ); 1722 } 1723 1724 /** 1725 * Determines whether currently in a page template. 1726 * 1727 * This template tag allows you to determine if you are in a page template. 1728 * You can optionally provide a template name or array of template names 1729 * and then the check will be specific to that template. 1730 * 1731 * For more information on this and similar theme functions, check out 1732 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ 1733 * Conditional Tags} article in the Theme Developer Handbook. 1734 * 1735 * @since 2.5.0 1736 * @since 4.2.0 The `$template` parameter was changed to also accept an array of page templates. 1737 * @since 4.7.0 Now works with any post type, not just pages. 1738 * 1739 * @param string|array $template The specific template name or array of templates to match. 1740 * @return bool True on success, false on failure. 1741 */ 1742 function is_page_template( $template = '' ) { 1743 if ( ! is_singular() ) { 1744 return false; 1745 } 1746 1747 $page_template = get_page_template_slug( get_queried_object_id() ); 1748 1749 if ( empty( $template ) ) { 1750 return (bool) $page_template; 1751 } 1752 1753 if ( $template == $page_template ) { 1754 return true; 1755 } 1756 1757 if ( is_array( $template ) ) { 1758 if ( ( in_array( 'default', $template, true ) && ! $page_template ) 1759 || in_array( $page_template, $template, true ) 1760 ) { 1761 return true; 1762 } 1763 } 1764 1765 return ( 'default' === $template && ! $page_template ); 1766 } 1767 1768 /** 1769 * Get the specific template name for a given post. 1770 * 1771 * @since 3.4.0 1772 * @since 4.7.0 Now works with any post type, not just pages. 1773 * 1774 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 1775 * @return string|false Page template filename. Returns an empty string when the default page template 1776 * is in use. Returns false if the post does not exist. 1777 */ 1778 function get_page_template_slug( $post = null ) { 1779 $post = get_post( $post ); 1780 1781 if ( ! $post ) { 1782 return false; 1783 } 1784 1785 $template = get_post_meta( $post->ID, '_wp_page_template', true ); 1786 1787 if ( ! $template || 'default' == $template ) { 1788 return ''; 1789 } 1790 1791 return $template; 1792 } 1793 1794 /** 1795 * Retrieve formatted date timestamp of a revision (linked to that revisions's page). 1796 * 1797 * @since 2.6.0 1798 * 1799 * @param int|object $revision Revision ID or revision object. 1800 * @param bool $link Optional, default is true. Link to revisions's page? 1801 * @return string|false i18n formatted datetimestamp or localized 'Current Revision'. 1802 */ 1803 function wp_post_revision_title( $revision, $link = true ) { 1804 $revision = get_post( $revision ); 1805 if ( ! $revision ) { 1806 return $revision; 1807 } 1808 1809 if ( ! in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) ) { 1810 return false; 1811 } 1812 1813 /* translators: Revision date format, see https://secure.php.net/date */ 1814 $datef = _x( 'F j, Y @ H:i:s', 'revision date format' ); 1815 /* translators: %s: Revision date. */ 1816 $autosavef = __( '%s [Autosave]' ); 1817 /* translators: %s: Revision date. */ 1818 $currentf = __( '%s [Current Revision]' ); 1819 1820 $date = date_i18n( $datef, strtotime( $revision->post_modified ) ); 1821 $edit_link = get_edit_post_link( $revision->ID ); 1822 if ( $link && current_user_can( 'edit_post', $revision->ID ) && $edit_link ) { 1823 $date = "<a href='$edit_link'>$date</a>"; 1824 } 1825 1826 if ( ! wp_is_post_revision( $revision ) ) { 1827 $date = sprintf( $currentf, $date ); 1828 } elseif ( wp_is_post_autosave( $revision ) ) { 1829 $date = sprintf( $autosavef, $date ); 1830 } 1831 1832 return $date; 1833 } 1834 1835 /** 1836 * Retrieve formatted date timestamp of a revision (linked to that revisions's page). 1837 * 1838 * @since 3.6.0 1839 * 1840 * @param int|object $revision Revision ID or revision object. 1841 * @param bool $link Optional, default is true. Link to revisions's page? 1842 * @return string|false gravatar, user, i18n formatted datetimestamp or localized 'Current Revision'. 1843 */ 1844 function wp_post_revision_title_expanded( $revision, $link = true ) { 1845 $revision = get_post( $revision ); 1846 if ( ! $revision ) { 1847 return $revision; 1848 } 1849 1850 if ( ! in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) ) { 1851 return false; 1852 } 1853 1854 $author = get_the_author_meta( 'display_name', $revision->post_author ); 1855 /* translators: Revision date format, see https://secure.php.net/date */ 1856 $datef = _x( 'F j, Y @ H:i:s', 'revision date format' ); 1857 1858 $gravatar = get_avatar( $revision->post_author, 24 ); 1859 1860 $date = date_i18n( $datef, strtotime( $revision->post_modified ) ); 1861 $edit_link = get_edit_post_link( $revision->ID ); 1862 if ( $link && current_user_can( 'edit_post', $revision->ID ) && $edit_link ) { 1863 $date = "<a href='$edit_link'>$date</a>"; 1864 } 1865 1866 $revision_date_author = sprintf( 1867 /* translators: Post revision title. 1: Author avatar, 2: Author name, 3: Time ago, 4: Date. */ 1868 __( '%1$s %2$s, %3$s ago (%4$s)' ), 1869 $gravatar, 1870 $author, 1871 human_time_diff( strtotime( $revision->post_modified_gmt ) ), 1872 $date 1873 ); 1874 1875 /* translators: %s: Revision date with author avatar. */ 1876 $autosavef = __( '%s [Autosave]' ); 1877 /* translators: %s: Revision date with author avatar. */ 1878 $currentf = __( '%s [Current Revision]' ); 1879 1880 if ( ! wp_is_post_revision( $revision ) ) { 1881 $revision_date_author = sprintf( $currentf, $revision_date_author ); 1882 } elseif ( wp_is_post_autosave( $revision ) ) { 1883 $revision_date_author = sprintf( $autosavef, $revision_date_author ); 1884 } 1885 1886 /** 1887 * Filters the formatted author and date for a revision. 1888 * 1889 * @since 4.4.0 1890 * 1891 * @param string $revision_date_author The formatted string. 1892 * @param WP_Post $revision The revision object. 1893 * @param bool $link Whether to link to the revisions page, as passed into 1894 * wp_post_revision_title_expanded(). 1895 */ 1896 return apply_filters( 'wp_post_revision_title_expanded', $revision_date_author, $revision, $link ); 1897 } 1898 1899 /** 1900 * Display a list of a post's revisions. 1901 * 1902 * Can output either a UL with edit links or a TABLE with diff interface, and 1903 * restore action links. 1904 * 1905 * @since 2.6.0 1906 * 1907 * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default is global $post. 1908 * @param string $type 'all' (default), 'revision' or 'autosave' 1909 */ 1910 function wp_list_post_revisions( $post_id = 0, $type = 'all' ) { 1911 $post = get_post( $post_id ); 1912 if ( ! $post ) { 1913 return; 1914 } 1915 1916 // $args array with (parent, format, right, left, type) deprecated since 3.6 1917 if ( is_array( $type ) ) { 1918 $type = ! empty( $type['type'] ) ? $type['type'] : $type; 1919 _deprecated_argument( __FUNCTION__, '3.6.0' ); 1920 } 1921 1922 $revisions = wp_get_post_revisions( $post->ID ); 1923 if ( ! $revisions ) { 1924 return; 1925 } 1926 1927 $rows = ''; 1928 foreach ( $revisions as $revision ) { 1929 if ( ! current_user_can( 'read_post', $revision->ID ) ) { 1930 continue; 1931 } 1932 1933 $is_autosave = wp_is_post_autosave( $revision ); 1934 if ( ( 'revision' === $type && $is_autosave ) || ( 'autosave' === $type && ! $is_autosave ) ) { 1935 continue; 1936 } 1937 1938 $rows .= "\t<li>" . wp_post_revision_title_expanded( $revision ) . "</li>\n"; 1939 } 1940 1941 echo "<div class='hide-if-js'><p>" . __( 'JavaScript must be enabled to use this feature.' ) . "</p></div>\n"; 1942 1943 echo "<ul class='post-revisions hide-if-no-js'>\n"; 1944 echo $rows; 1945 echo '</ul>'; 1946 }
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| Generated: Tue Oct 22 08:20:01 2019 | Cross-referenced by PHPXref 0.7 |