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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * WordPress Link Template Functions 4 * 5 * @package WordPress 6 * @subpackage Template 7 */ 8 9 /** 10 * Displays the permalink for the current post. 11 * 12 * @since 1.2.0 13 * @since 4.4.0 Added the `$post` parameter. 14 * 15 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 16 */ 17 function the_permalink( $post = 0 ) { 18 /** 19 * Filters the display of the permalink for the current post. 20 * 21 * @since 1.5.0 22 * @since 4.4.0 Added the `$post` parameter. 23 * 24 * @param string $permalink The permalink for the current post. 25 * @param int|WP_Post $post Post ID, WP_Post object, or 0. Default 0. 26 */ 27 echo esc_url( apply_filters( 'the_permalink', get_permalink( $post ), $post ) ); 28 } 29 30 /** 31 * Retrieves a trailing-slashed string if the site is set for adding trailing slashes. 32 * 33 * Conditionally adds a trailing slash if the permalink structure has a trailing 34 * slash, strips the trailing slash if not. The string is passed through the 35 * {@see 'user_trailingslashit'} filter. Will remove trailing slash from string, if 36 * site is not set to have them. 37 * 38 * @since 2.2.0 39 * 40 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 41 * 42 * @param string $url URL with or without a trailing slash. 43 * @param string $type_of_url Optional. The type of URL being considered (e.g. single, category, etc) 44 * for use in the filter. Default empty string. 45 * @return string The URL with the trailing slash appended or stripped. 46 */ 47 function user_trailingslashit( $url, $type_of_url = '' ) { 48 global $wp_rewrite; 49 if ( $wp_rewrite->use_trailing_slashes ) { 50 $url = trailingslashit( $url ); 51 } else { 52 $url = untrailingslashit( $url ); 53 } 54 55 /** 56 * Filters the trailing-slashed string, depending on whether the site is set to use trailing slashes. 57 * 58 * @since 2.2.0 59 * 60 * @param string $url URL with or without a trailing slash. 61 * @param string $type_of_url The type of URL being considered. Accepts 'single', 'single_trackback', 62 * 'single_feed', 'single_paged', 'commentpaged', 'paged', 'home', 'feed', 63 * 'category', 'page', 'year', 'month', 'day', 'post_type_archive'. 64 */ 65 return apply_filters( 'user_trailingslashit', $url, $type_of_url ); 66 } 67 68 /** 69 * Displays the permalink anchor for the current post. 70 * 71 * The permalink mode title will use the post title for the 'a' element 'id' 72 * attribute. The id mode uses 'post-' with the post ID for the 'id' attribute. 73 * 74 * @since 0.71 75 * 76 * @param string $mode Optional. Permalink mode. Accepts 'title' or 'id'. Default 'id'. 77 */ 78 function permalink_anchor( $mode = 'id' ) { 79 $post = get_post(); 80 switch ( strtolower( $mode ) ) { 81 case 'title': 82 $title = sanitize_title( $post->post_title ) . '-' . $post->ID; 83 echo '<a id="' . $title . '"></a>'; 84 break; 85 case 'id': 86 default: 87 echo '<a id="post-' . $post->ID . '"></a>'; 88 break; 89 } 90 } 91 92 /** 93 * Determine whether post should always use a plain permalink structure. 94 * 95 * @since 5.7.0 96 * 97 * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post. 98 * @param bool|null $sample Optional. Whether to force consideration based on sample links. 99 * If omitted, a sample link is generated if a post object is passed 100 * with the filter property set to 'sample'. 101 * @return bool Whether to use a plain permalink structure. 102 */ 103 function wp_force_plain_post_permalink( $post = null, $sample = null ) { 104 if ( 105 null === $sample && 106 is_object( $post ) && 107 isset( $post->filter ) && 108 'sample' === $post->filter 109 ) { 110 $sample = true; 111 } else { 112 $post = get_post( $post ); 113 $sample ??= false; 114 } 115 116 if ( ! $post ) { 117 return true; 118 } 119 120 $post_status_obj = get_post_status_object( get_post_status( $post ) ); 121 $post_type_obj = get_post_type_object( get_post_type( $post ) ); 122 123 if ( ! $post_status_obj || ! $post_type_obj ) { 124 return true; 125 } 126 127 if ( 128 // Publicly viewable links never have plain permalinks. 129 is_post_status_viewable( $post_status_obj ) || 130 ( 131 // Private posts don't have plain permalinks if the user can read them. 132 $post_status_obj->private && 133 current_user_can( 'read_post', $post->ID ) 134 ) || 135 // Protected posts don't have plain links if getting a sample URL. 136 ( $post_status_obj->protected && $sample ) 137 ) { 138 return false; 139 } 140 141 return true; 142 } 143 144 /** 145 * Retrieves the full permalink for the current post or post ID. 146 * 147 * This function is an alias for get_permalink(). 148 * 149 * @since 3.9.0 150 * 151 * @see get_permalink() 152 * 153 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 154 * @param bool $leavename Optional. Whether to keep post name or page name. Default false. 155 * @return string|false The permalink URL. False if the post does not exist. 156 */ 157 function get_the_permalink( $post = 0, $leavename = false ) { 158 return get_permalink( $post, $leavename ); 159 } 160 161 /** 162 * Retrieves the full permalink for the current post or post ID. 163 * 164 * @since 1.0.0 165 * 166 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 167 * @param bool $leavename Optional. Whether to keep post name or page name. Default false. 168 * @return string|false The permalink URL. False if the post does not exist. 169 */ 170 function get_permalink( $post = 0, $leavename = false ) { 171 $rewritecode = array( 172 '%year%', 173 '%monthnum%', 174 '%day%', 175 '%hour%', 176 '%minute%', 177 '%second%', 178 $leavename ? '' : '%postname%', 179 '%post_id%', 180 '%category%', 181 '%author%', 182 $leavename ? '' : '%pagename%', 183 ); 184 185 if ( is_object( $post ) && isset( $post->filter ) && 'sample' === $post->filter ) { 186 $sample = true; 187 } else { 188 $post = get_post( $post ); 189 $sample = false; 190 } 191 192 if ( empty( $post->ID ) ) { 193 return false; 194 } 195 196 if ( 'page' === $post->post_type ) { 197 return get_page_link( $post, $leavename, $sample ); 198 } elseif ( 'attachment' === $post->post_type ) { 199 return get_attachment_link( $post, $leavename ); 200 } elseif ( in_array( $post->post_type, get_post_types( array( '_builtin' => false ) ), true ) ) { 201 return get_post_permalink( $post, $leavename, $sample ); 202 } 203 204 $permalink = get_option( 'permalink_structure' ); 205 206 /** 207 * Filters the permalink structure for a post before token replacement occurs. 208 * 209 * Only applies to posts with post_type of 'post'. 210 * 211 * @since 3.0.0 212 * 213 * @param string $permalink The site's permalink structure. 214 * @param WP_Post $post The post in question. 215 * @param bool $leavename Whether to keep the post name. 216 */ 217 $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename ); 218 219 if ( 220 $permalink && 221 ! wp_force_plain_post_permalink( $post ) 222 ) { 223 224 $category = ''; 225 if ( str_contains( $permalink, '%category%' ) ) { 226 $cats = get_the_category( $post->ID ); 227 if ( $cats ) { 228 $cats = wp_list_sort( 229 $cats, 230 array( 231 'term_id' => 'ASC', 232 ) 233 ); 234 235 /** 236 * Filters the category that gets used in the %category% permalink token. 237 * 238 * @since 3.5.0 239 * 240 * @param WP_Term $cat The category to use in the permalink. 241 * @param array $cats Array of all categories (WP_Term objects) associated with the post. 242 * @param WP_Post $post The post in question. 243 */ 244 $category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post ); 245 246 $category_object = get_term( $category_object, 'category' ); 247 $category = $category_object->slug; 248 if ( $category_object->parent ) { 249 $category = get_category_parents( $category_object->parent, false, '/', true ) . $category; 250 } 251 } 252 /* 253 * Show default category in permalinks, 254 * without having to assign it explicitly. 255 */ 256 if ( empty( $category ) ) { 257 $default_category = get_term( get_option( 'default_category' ), 'category' ); 258 if ( $default_category && ! is_wp_error( $default_category ) ) { 259 $category = $default_category->slug; 260 } 261 } 262 } 263 264 $author = ''; 265 if ( str_contains( $permalink, '%author%' ) ) { 266 $authordata = get_userdata( $post->post_author ); 267 $author = $authordata->user_nicename; 268 } 269 270 /* 271 * This is not an API call because the permalink is based on the stored post_date value, 272 * which should be parsed as local time regardless of the default PHP timezone. 273 */ 274 $date = explode( ' ', str_replace( array( '-', ':' ), ' ', $post->post_date ) ); 275 276 $rewritereplace = array( 277 $date[0], 278 $date[1], 279 $date[2], 280 $date[3], 281 $date[4], 282 $date[5], 283 $post->post_name, 284 $post->ID, 285 $category, 286 $author, 287 $post->post_name, 288 ); 289 290 $permalink = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) ); 291 $permalink = user_trailingslashit( $permalink, 'single' ); 292 293 } else { // If they're not using the fancy permalink option. 294 $permalink = home_url( '?p=' . $post->ID ); 295 } 296 297 /** 298 * Filters the permalink for a post. 299 * 300 * Only applies to posts with post_type of 'post'. 301 * 302 * @since 1.5.0 303 * 304 * @param string $permalink The post's permalink. 305 * @param WP_Post $post The post in question. 306 * @param bool $leavename Whether to keep the post name. 307 */ 308 return apply_filters( 'post_link', $permalink, $post, $leavename ); 309 } 310 311 /** 312 * Retrieves the permalink for a post of a custom post type. 313 * 314 * @since 3.0.0 315 * @since 6.1.0 Returns false if the post does not exist. 316 * 317 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 318 * 319 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 320 * @param bool $leavename Optional. Whether to keep post name. Default false. 321 * @param bool $sample Optional. Is it a sample permalink. Default false. 322 * @return string|false The post permalink URL. False if the post does not exist. 323 */ 324 function get_post_permalink( $post = 0, $leavename = false, $sample = false ) { 325 global $wp_rewrite; 326 327 $post = get_post( $post ); 328 329 if ( ! $post ) { 330 return false; 331 } 332 333 $post_link = $wp_rewrite->get_extra_permastruct( $post->post_type ); 334 335 $slug = $post->post_name; 336 337 $force_plain_link = wp_force_plain_post_permalink( $post ); 338 339 $post_type = get_post_type_object( $post->post_type ); 340 341 if ( $post_type->hierarchical ) { 342 $slug = get_page_uri( $post ); 343 } 344 345 if ( ! empty( $post_link ) && ( ! $force_plain_link || $sample ) ) { 346 if ( ! $leavename ) { 347 $post_link = str_replace( "%$post->post_type%", $slug, $post_link ); 348 } 349 $post_link = home_url( user_trailingslashit( $post_link ) ); 350 } else { 351 if ( $post_type->query_var && ( isset( $post->post_status ) && ! $force_plain_link ) ) { 352 $post_link = add_query_arg( $post_type->query_var, $slug, '' ); 353 } else { 354 $post_link = add_query_arg( 355 array( 356 'post_type' => $post->post_type, 357 'p' => $post->ID, 358 ), 359 '' 360 ); 361 } 362 $post_link = home_url( $post_link ); 363 } 364 365 /** 366 * Filters the permalink for a post of a custom post type. 367 * 368 * @since 3.0.0 369 * 370 * @param string $post_link The post's permalink. 371 * @param WP_Post $post The post in question. 372 * @param bool $leavename Whether to keep the post name. 373 * @param bool $sample Is it a sample permalink. 374 */ 375 return apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample ); 376 } 377 378 /** 379 * Retrieves the permalink for the current page or page ID. 380 * 381 * Respects page_on_front. Use this one. 382 * 383 * @since 1.5.0 384 * 385 * @param int|WP_Post $post Optional. Post ID or object. Default uses the global `$post`. 386 * @param bool $leavename Optional. Whether to keep the page name. Default false. 387 * @param bool $sample Optional. Whether it should be treated as a sample permalink. 388 * Default false. 389 * @return string The page permalink. 390 */ 391 function get_page_link( $post = 0, $leavename = false, $sample = false ) { 392 $post = get_post( $post ); 393 394 if ( 'page' === get_option( 'show_on_front' ) && (int) get_option( 'page_on_front' ) === $post->ID ) { 395 $link = home_url( '/' ); 396 } else { 397 $link = _get_page_link( $post, $leavename, $sample ); 398 } 399 400 /** 401 * Filters the permalink for a page. 402 * 403 * @since 1.5.0 404 * 405 * @param string $link The page's permalink. 406 * @param int $post_id The ID of the page. 407 * @param bool $sample Is it a sample permalink. 408 */ 409 return apply_filters( 'page_link', $link, $post->ID, $sample ); 410 } 411 412 /** 413 * Retrieves the page permalink. 414 * 415 * Ignores page_on_front. Internal use only. 416 * 417 * @since 2.1.0 418 * @access private 419 * 420 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 421 * 422 * @param int|WP_Post $post Optional. Post ID or object. Default uses the global `$post`. 423 * @param bool $leavename Optional. Whether to keep the page name. Default false. 424 * @param bool $sample Optional. Whether it should be treated as a sample permalink. 425 * Default false. 426 * @return string The page permalink. 427 */ 428 function _get_page_link( $post = 0, $leavename = false, $sample = false ) { 429 global $wp_rewrite; 430 431 $post = get_post( $post ); 432 433 $force_plain_link = wp_force_plain_post_permalink( $post ); 434 435 $link = $wp_rewrite->get_page_permastruct(); 436 437 if ( ! empty( $link ) && ( ( isset( $post->post_status ) && ! $force_plain_link ) || $sample ) ) { 438 if ( ! $leavename ) { 439 $link = str_replace( '%pagename%', get_page_uri( $post ), $link ); 440 } 441 442 $link = home_url( $link ); 443 $link = user_trailingslashit( $link, 'page' ); 444 } else { 445 $link = home_url( '?page_id=' . $post->ID ); 446 } 447 448 /** 449 * Filters the permalink for a non-page_on_front page. 450 * 451 * @since 2.1.0 452 * 453 * @param string $link The page's permalink. 454 * @param int $post_id The ID of the page. 455 */ 456 return apply_filters( '_get_page_link', $link, $post->ID ); 457 } 458 459 /** 460 * Retrieves the permalink for an attachment. 461 * 462 * This can be used in the WordPress Loop or outside of it. 463 * 464 * @since 2.0.0 465 * 466 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 467 * 468 * @param int|WP_Post $post Optional. Post ID or object. Default uses the global `$post`. 469 * @param bool $leavename Optional. Whether to keep the page name. Default false. 470 * @return string The attachment permalink. 471 */ 472 function get_attachment_link( $post = null, $leavename = false ) { 473 global $wp_rewrite; 474 475 $link = false; 476 477 $post = get_post( $post ); 478 $force_plain_link = wp_force_plain_post_permalink( $post ); 479 $parent_id = $post->post_parent; 480 $parent = $parent_id ? get_post( $parent_id ) : false; 481 $parent_valid = true; // Default for no parent. 482 if ( 483 $parent_id && 484 ( 485 $post->post_parent === $post->ID || 486 ! $parent || 487 ! is_post_type_viewable( get_post_type( $parent ) ) 488 ) 489 ) { 490 // Post is either its own parent or parent post unavailable. 491 $parent_valid = false; 492 } 493 494 if ( $force_plain_link || ! $parent_valid ) { 495 $link = false; 496 } elseif ( $wp_rewrite->using_permalinks() && $parent ) { 497 if ( 'page' === $parent->post_type ) { 498 $parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front. 499 } else { 500 $parentlink = get_permalink( $post->post_parent ); 501 } 502 503 if ( is_numeric( $post->post_name ) || str_contains( get_option( 'permalink_structure' ), '%category%' ) ) { 504 $name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker. 505 } else { 506 $name = $post->post_name; 507 } 508 509 if ( ! str_contains( $parentlink, '?' ) ) { 510 $link = user_trailingslashit( trailingslashit( $parentlink ) . '%postname%' ); 511 } 512 513 if ( ! $leavename ) { 514 $link = str_replace( '%postname%', $name, $link ); 515 } 516 } elseif ( $wp_rewrite->using_permalinks() && ! $leavename ) { 517 $link = home_url( user_trailingslashit( $post->post_name ) ); 518 } 519 520 if ( ! $link ) { 521 $link = home_url( '/?attachment_id=' . $post->ID ); 522 } 523 524 /** 525 * Filters the permalink for an attachment. 526 * 527 * @since 2.0.0 528 * @since 5.6.0 Providing an empty string will now disable 529 * the view attachment page link on the media modal. 530 * 531 * @param string $link The attachment's permalink. 532 * @param int $post_id Attachment ID. 533 */ 534 return apply_filters( 'attachment_link', $link, $post->ID ); 535 } 536 537 /** 538 * Retrieves the permalink for the year archives. 539 * 540 * @since 1.5.0 541 * 542 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 543 * 544 * @param int|false $year Integer of year. False for current year. 545 * @return string The permalink for the specified year archive. 546 */ 547 function get_year_link( $year ) { 548 global $wp_rewrite; 549 if ( ! $year ) { 550 $year = current_time( 'Y' ); 551 } 552 $yearlink = $wp_rewrite->get_year_permastruct(); 553 if ( ! empty( $yearlink ) ) { 554 $yearlink = str_replace( '%year%', $year, $yearlink ); 555 $yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) ); 556 } else { 557 $yearlink = home_url( '?m=' . $year ); 558 } 559 560 /** 561 * Filters the year archive permalink. 562 * 563 * @since 1.5.0 564 * 565 * @param string $yearlink Permalink for the year archive. 566 * @param int $year Year for the archive. 567 */ 568 return apply_filters( 'year_link', $yearlink, $year ); 569 } 570 571 /** 572 * Retrieves the permalink for the month archives with year. 573 * 574 * @since 1.0.0 575 * 576 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 577 * 578 * @param int|false $year Integer of year. False for current year. 579 * @param int|false $month Integer of month. False for current month. 580 * @return string The permalink for the specified month and year archive. 581 */ 582 function get_month_link( $year, $month ) { 583 global $wp_rewrite; 584 if ( ! $year ) { 585 $year = current_time( 'Y' ); 586 } 587 if ( ! $month ) { 588 $month = current_time( 'm' ); 589 } 590 $monthlink = $wp_rewrite->get_month_permastruct(); 591 if ( ! empty( $monthlink ) ) { 592 $monthlink = str_replace( '%year%', $year, $monthlink ); 593 $monthlink = str_replace( '%monthnum%', zeroise( (int) $month, 2 ), $monthlink ); 594 $monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) ); 595 } else { 596 $monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) ); 597 } 598 599 /** 600 * Filters the month archive permalink. 601 * 602 * @since 1.5.0 603 * 604 * @param string $monthlink Permalink for the month archive. 605 * @param int $year Year for the archive. 606 * @param int $month The month for the archive. 607 */ 608 return apply_filters( 'month_link', $monthlink, $year, $month ); 609 } 610 611 /** 612 * Retrieves the permalink for the day archives with year and month. 613 * 614 * @since 1.0.0 615 * 616 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 617 * 618 * @param int|false $year Integer of year. False for current year. 619 * @param int|false $month Integer of month. False for current month. 620 * @param int|false $day Integer of day. False for current day. 621 * @return string The permalink for the specified day, month, and year archive. 622 */ 623 function get_day_link( $year, $month, $day ) { 624 global $wp_rewrite; 625 if ( ! $year ) { 626 $year = current_time( 'Y' ); 627 } 628 if ( ! $month ) { 629 $month = current_time( 'm' ); 630 } 631 if ( ! $day ) { 632 $day = current_time( 'j' ); 633 } 634 635 $daylink = $wp_rewrite->get_day_permastruct(); 636 if ( ! empty( $daylink ) ) { 637 $daylink = str_replace( '%year%', $year, $daylink ); 638 $daylink = str_replace( '%monthnum%', zeroise( (int) $month, 2 ), $daylink ); 639 $daylink = str_replace( '%day%', zeroise( (int) $day, 2 ), $daylink ); 640 $daylink = home_url( user_trailingslashit( $daylink, 'day' ) ); 641 } else { 642 $daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) ); 643 } 644 645 /** 646 * Filters the day archive permalink. 647 * 648 * @since 1.5.0 649 * 650 * @param string $daylink Permalink for the day archive. 651 * @param int $year Year for the archive. 652 * @param int $month Month for the archive. 653 * @param int $day The day for the archive. 654 */ 655 return apply_filters( 'day_link', $daylink, $year, $month, $day ); 656 } 657 658 /** 659 * Displays the permalink for the feed type. 660 * 661 * @since 3.0.0 662 * 663 * @param string $anchor The link's anchor text. 664 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 665 * Default is the value of get_default_feed(). 666 */ 667 function the_feed_link( $anchor, $feed = '' ) { 668 $link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>'; 669 670 /** 671 * Filters the feed link anchor tag. 672 * 673 * @since 3.0.0 674 * 675 * @param string $link The complete anchor tag for a feed link. 676 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 677 * or an empty string for the default feed type. 678 */ 679 echo apply_filters( 'the_feed_link', $link, $feed ); 680 } 681 682 /** 683 * Retrieves the permalink for the feed type. 684 * 685 * @since 1.5.0 686 * 687 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 688 * 689 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 690 * Default is the value of get_default_feed(). 691 * @return string The feed permalink. 692 */ 693 function get_feed_link( $feed = '' ) { 694 global $wp_rewrite; 695 696 $permalink = $wp_rewrite->get_feed_permastruct(); 697 698 if ( $permalink ) { 699 if ( str_contains( $feed, 'comments_' ) ) { 700 $feed = str_replace( 'comments_', '', $feed ); 701 $permalink = $wp_rewrite->get_comment_feed_permastruct(); 702 } 703 704 if ( get_default_feed() === $feed ) { 705 $feed = ''; 706 } 707 708 $permalink = str_replace( '%feed%', $feed, $permalink ); 709 $permalink = preg_replace( '#/+#', '/', "/$permalink" ); 710 $output = home_url( user_trailingslashit( $permalink, 'feed' ) ); 711 } else { 712 if ( empty( $feed ) ) { 713 $feed = get_default_feed(); 714 } 715 716 if ( str_contains( $feed, 'comments_' ) ) { 717 $feed = str_replace( 'comments_', 'comments-', $feed ); 718 } 719 720 $output = home_url( "?feed={$feed}" ); 721 } 722 723 /** 724 * Filters the feed type permalink. 725 * 726 * @since 1.5.0 727 * 728 * @param string $output The feed permalink. 729 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 730 * or an empty string for the default feed type. 731 */ 732 return apply_filters( 'feed_link', $output, $feed ); 733 } 734 735 /** 736 * Retrieves the permalink for the post comments feed. 737 * 738 * @since 2.2.0 739 * 740 * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`. 741 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 742 * Default is the value of get_default_feed(). 743 * @return string The permalink for the comments feed for the given post on success, empty string on failure. 744 */ 745 function get_post_comments_feed_link( $post_id = 0, $feed = '' ) { 746 $post_id = absint( $post_id ); 747 748 if ( ! $post_id ) { 749 $post_id = get_the_ID(); 750 } 751 752 if ( empty( $feed ) ) { 753 $feed = get_default_feed(); 754 } 755 756 $post = get_post( $post_id ); 757 758 // Bail out if the post does not exist. 759 if ( ! $post instanceof WP_Post ) { 760 return ''; 761 } 762 763 $unattached = 'attachment' === $post->post_type && 0 === (int) $post->post_parent; 764 765 if ( get_option( 'permalink_structure' ) ) { 766 if ( 'page' === get_option( 'show_on_front' ) && (int) get_option( 'page_on_front' ) === $post_id ) { 767 $url = _get_page_link( $post_id ); 768 } else { 769 $url = get_permalink( $post_id ); 770 } 771 772 if ( $unattached ) { 773 $url = home_url( '/feed/' ); 774 if ( get_default_feed() !== $feed ) { 775 $url .= "$feed/"; 776 } 777 $url = add_query_arg( 'attachment_id', $post_id, $url ); 778 } else { 779 $url = trailingslashit( $url ) . 'feed'; 780 if ( get_default_feed() !== $feed ) { 781 $url .= "/$feed"; 782 } 783 $url = user_trailingslashit( $url, 'single_feed' ); 784 } 785 } else { 786 if ( $unattached ) { 787 $url = add_query_arg( 788 array( 789 'feed' => $feed, 790 'attachment_id' => $post_id, 791 ), 792 home_url( '/' ) 793 ); 794 } elseif ( 'page' === $post->post_type ) { 795 $url = add_query_arg( 796 array( 797 'feed' => $feed, 798 'page_id' => $post_id, 799 ), 800 home_url( '/' ) 801 ); 802 } else { 803 $url = add_query_arg( 804 array( 805 'feed' => $feed, 806 'p' => $post_id, 807 ), 808 home_url( '/' ) 809 ); 810 } 811 } 812 813 /** 814 * Filters the post comments feed permalink. 815 * 816 * @since 1.5.1 817 * 818 * @param string $url Post comments feed permalink. 819 */ 820 return apply_filters( 'post_comments_feed_link', $url ); 821 } 822 823 /** 824 * Displays the comment feed link for a post. 825 * 826 * Prints out the comment feed link for a post. Link text is placed in the 827 * anchor. If no link text is specified, default text is used. If no post ID is 828 * specified, the current post is used. 829 * 830 * @since 2.5.0 831 * 832 * @param string $link_text Optional. Descriptive link text. Default 'Comments Feed'. 833 * @param int $post_id Optional. Post ID. Default is the ID of the global `$post`. 834 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 835 * Default is the value of get_default_feed(). 836 */ 837 function post_comments_feed_link( $link_text = '', $post_id = 0, $feed = '' ) { 838 $url = get_post_comments_feed_link( $post_id, $feed ); 839 if ( empty( $link_text ) ) { 840 $link_text = __( 'Comments Feed' ); 841 } 842 843 $link = '<a href="' . esc_url( $url ) . '">' . $link_text . '</a>'; 844 /** 845 * Filters the post comment feed link anchor tag. 846 * 847 * @since 2.8.0 848 * 849 * @param string $link The complete anchor tag for the comment feed link. 850 * @param int $post_id Post ID. 851 * @param string $feed The feed type. Possible values include 'rss2', 'atom', 852 * or an empty string for the default feed type. 853 */ 854 echo apply_filters( 'post_comments_feed_link_html', $link, $post_id, $feed ); 855 } 856 857 /** 858 * Retrieves the feed link for a given author. 859 * 860 * Returns a link to the feed for all posts by a given author. A specific feed 861 * can be requested or left blank to get the default feed. 862 * 863 * @since 2.5.0 864 * 865 * @param int $author_id Author ID. 866 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 867 * Default is the value of get_default_feed(). 868 * @return string Link to the feed for the author specified by $author_id. 869 */ 870 function get_author_feed_link( $author_id, $feed = '' ) { 871 $author_id = (int) $author_id; 872 $permalink_structure = get_option( 'permalink_structure' ); 873 874 if ( empty( $feed ) ) { 875 $feed = get_default_feed(); 876 } 877 878 if ( ! $permalink_structure ) { 879 $link = home_url( "?feed=$feed&author=" . $author_id ); 880 } else { 881 $link = get_author_posts_url( $author_id ); 882 if ( get_default_feed() === $feed ) { 883 $feed_link = 'feed'; 884 } else { 885 $feed_link = "feed/$feed"; 886 } 887 888 $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' ); 889 } 890 891 /** 892 * Filters the feed link for a given author. 893 * 894 * @since 1.5.1 895 * 896 * @param string $link The author feed link. 897 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 898 */ 899 $link = apply_filters( 'author_feed_link', $link, $feed ); 900 901 return $link; 902 } 903 904 /** 905 * Retrieves the feed link for a category. 906 * 907 * Returns a link to the feed for all posts in a given category. A specific feed 908 * can be requested or left blank to get the default feed. 909 * 910 * @since 2.5.0 911 * 912 * @param int|WP_Term|object $cat The ID or category object whose feed link will be retrieved. 913 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 914 * Default is the value of get_default_feed(). 915 * @return string Link to the feed for the category specified by `$cat`. 916 */ 917 function get_category_feed_link( $cat, $feed = '' ) { 918 return get_term_feed_link( $cat, 'category', $feed ); 919 } 920 921 /** 922 * Retrieves the feed link for a term. 923 * 924 * Returns a link to the feed for all posts in a given term. A specific feed 925 * can be requested or left blank to get the default feed. 926 * 927 * @since 3.0.0 928 * 929 * @param int|WP_Term|object $term The ID or term object whose feed link will be retrieved. 930 * @param string $taxonomy Optional. Taxonomy of `$term_id`. 931 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 932 * Default is the value of get_default_feed(). 933 * @return string|false Link to the feed for the term specified by `$term` and `$taxonomy`. 934 */ 935 function get_term_feed_link( $term, $taxonomy = '', $feed = '' ) { 936 if ( ! is_object( $term ) ) { 937 $term = (int) $term; 938 } 939 940 $term = get_term( $term, $taxonomy ); 941 942 if ( empty( $term ) || is_wp_error( $term ) ) { 943 return false; 944 } 945 946 $taxonomy = $term->taxonomy; 947 948 if ( empty( $feed ) ) { 949 $feed = get_default_feed(); 950 } 951 952 $permalink_structure = get_option( 'permalink_structure' ); 953 954 if ( ! $permalink_structure ) { 955 if ( 'category' === $taxonomy ) { 956 $link = home_url( "?feed=$feed&cat=$term->term_id" ); 957 } elseif ( 'post_tag' === $taxonomy ) { 958 $link = home_url( "?feed=$feed&tag=$term->slug" ); 959 } else { 960 $t = get_taxonomy( $taxonomy ); 961 $link = home_url( "?feed=$feed&$t->query_var=$term->slug" ); 962 } 963 } else { 964 $link = get_term_link( $term, $term->taxonomy ); 965 if ( get_default_feed() === $feed ) { 966 $feed_link = 'feed'; 967 } else { 968 $feed_link = "feed/$feed"; 969 } 970 971 $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' ); 972 } 973 974 if ( 'category' === $taxonomy ) { 975 /** 976 * Filters the category feed link. 977 * 978 * @since 1.5.1 979 * 980 * @param string $link The category feed link. 981 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 982 */ 983 $link = apply_filters( 'category_feed_link', $link, $feed ); 984 } elseif ( 'post_tag' === $taxonomy ) { 985 /** 986 * Filters the post tag feed link. 987 * 988 * @since 2.3.0 989 * 990 * @param string $link The tag feed link. 991 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 992 */ 993 $link = apply_filters( 'tag_feed_link', $link, $feed ); 994 } else { 995 /** 996 * Filters the feed link for a taxonomy other than 'category' or 'post_tag'. 997 * 998 * @since 3.0.0 999 * 1000 * @param string $link The taxonomy feed link. 1001 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 1002 * @param string $taxonomy The taxonomy name. 1003 */ 1004 $link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy ); 1005 } 1006 1007 return $link; 1008 } 1009 1010 /** 1011 * Retrieves the permalink for a tag feed. 1012 * 1013 * @since 2.3.0 1014 * 1015 * @param int|WP_Term|object $tag The ID or term object whose feed link will be retrieved. 1016 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1017 * Default is the value of get_default_feed(). 1018 * @return string The feed permalink for the given tag. 1019 */ 1020 function get_tag_feed_link( $tag, $feed = '' ) { 1021 return get_term_feed_link( $tag, 'post_tag', $feed ); 1022 } 1023 1024 /** 1025 * Retrieves the edit link for a tag. 1026 * 1027 * @since 2.7.0 1028 * 1029 * @param int|WP_Term|object $tag The ID or term object whose edit link will be retrieved. 1030 * @param string $taxonomy Optional. Taxonomy slug. Default 'post_tag'. 1031 * @return string The edit tag link URL for the given tag. 1032 */ 1033 function get_edit_tag_link( $tag, $taxonomy = 'post_tag' ) { 1034 /** 1035 * Filters the edit link for a tag (or term in another taxonomy). 1036 * 1037 * @since 2.7.0 1038 * 1039 * @param string $link The term edit link. 1040 */ 1041 return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag, $taxonomy ) ); 1042 } 1043 1044 /** 1045 * Displays or retrieves the edit link for a tag with formatting. 1046 * 1047 * @since 2.7.0 1048 * 1049 * @param string $link Optional. Anchor text. If empty, default is 'Edit This'. Default empty. 1050 * @param string $before Optional. Display before edit link. Default empty. 1051 * @param string $after Optional. Display after edit link. Default empty. 1052 * @param WP_Term $tag Optional. Term object. If null, the queried object will be inspected. 1053 * Default null. 1054 */ 1055 function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) { 1056 $link = edit_term_link( $link, '', '', $tag, false ); 1057 1058 /** 1059 * Filters the anchor tag for the edit link for a tag (or term in another taxonomy). 1060 * 1061 * @since 2.7.0 1062 * 1063 * @param string $link The anchor tag for the edit link. 1064 */ 1065 echo $before . apply_filters( 'edit_tag_link', $link ) . $after; 1066 } 1067 1068 /** 1069 * Retrieves the URL for editing a given term. 1070 * 1071 * @since 3.1.0 1072 * @since 4.5.0 The `$taxonomy` parameter was made optional. 1073 * 1074 * @param int|WP_Term|object $term The ID or term object whose edit link will be retrieved. 1075 * @param string $taxonomy Optional. Taxonomy. Defaults to the taxonomy of the term identified 1076 * by `$term`. 1077 * @param string $object_type Optional. The object type. Used to highlight the proper post type 1078 * menu on the linked page. Defaults to the first object_type associated 1079 * with the taxonomy. 1080 * @return string|null The edit term link URL for the given term, or null on failure. 1081 */ 1082 function get_edit_term_link( $term, $taxonomy = '', $object_type = '' ) { 1083 $term = get_term( $term, $taxonomy ); 1084 if ( ! $term || is_wp_error( $term ) ) { 1085 return null; 1086 } 1087 1088 $tax = get_taxonomy( $term->taxonomy ); 1089 $term_id = $term->term_id; 1090 if ( ! $tax || ! current_user_can( 'edit_term', $term_id ) ) { 1091 return null; 1092 } 1093 1094 $args = array( 1095 'taxonomy' => $tax->name, 1096 'tag_ID' => $term_id, 1097 ); 1098 1099 if ( $object_type ) { 1100 $args['post_type'] = $object_type; 1101 } elseif ( ! empty( $tax->object_type ) ) { 1102 $args['post_type'] = reset( $tax->object_type ); 1103 } 1104 1105 if ( $tax->show_ui ) { 1106 $location = add_query_arg( $args, admin_url( 'term.php' ) ); 1107 } else { 1108 $location = ''; 1109 } 1110 1111 /** 1112 * Filters the edit link for a term. 1113 * 1114 * @since 3.1.0 1115 * 1116 * @param string $location The edit link. 1117 * @param int $term_id Term ID. 1118 * @param string $taxonomy Taxonomy name. 1119 * @param string $object_type The object type. 1120 */ 1121 return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type ); 1122 } 1123 1124 /** 1125 * Displays or retrieves the edit term link with formatting. 1126 * 1127 * @since 3.1.0 1128 * 1129 * @param string $link Optional. Anchor text. If empty, default is 'Edit This'. Default empty. 1130 * @param string $before Optional. Display before edit link. Default empty. 1131 * @param string $after Optional. Display after edit link. Default empty. 1132 * @param int|WP_Term|null $term Optional. Term ID or object. If null, the queried object will be inspected. Default null. 1133 * @param bool $display Optional. Whether or not to echo the return. Default true. 1134 * @return string|null|void HTML content when retrieving, null on failure or without the 1135 * capability to edit the term. Nothing when displaying. 1136 * @phpstan-return ( $display is true ? void : string|null ) 1137 */ 1138 function edit_term_link( $link = '', $before = '', $after = '', $term = null, $display = true ) { 1139 if ( is_null( $term ) ) { 1140 $term = get_queried_object(); 1141 } else { 1142 $term = get_term( $term ); 1143 } 1144 1145 if ( ! $term ) { 1146 return null; 1147 } 1148 1149 if ( ! current_user_can( 'edit_term', $term->term_id ) ) { 1150 return null; 1151 } 1152 1153 if ( empty( $link ) ) { 1154 $link = __( 'Edit This' ); 1155 } 1156 1157 $link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>'; 1158 1159 /** 1160 * Filters the anchor tag for the edit link of a term. 1161 * 1162 * @since 3.1.0 1163 * 1164 * @param string $link The anchor tag for the edit link. 1165 * @param int $term_id Term ID. 1166 */ 1167 $link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after; 1168 1169 if ( ! $display ) { 1170 return $link; 1171 } 1172 1173 echo $link; 1174 } 1175 1176 /** 1177 * Retrieves the permalink for a search. 1178 * 1179 * @since 3.0.0 1180 * 1181 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1182 * 1183 * @param string $query Optional. The query string to use. If empty the current query is used. Default empty. 1184 * @return string The search permalink. 1185 */ 1186 function get_search_link( $query = '' ) { 1187 global $wp_rewrite; 1188 1189 if ( empty( $query ) ) { 1190 $search = get_search_query( false ); 1191 } else { 1192 $search = stripslashes( $query ); 1193 } 1194 1195 $permastruct = $wp_rewrite->get_search_permastruct(); 1196 1197 if ( empty( $permastruct ) ) { 1198 $link = home_url( '?s=' . urlencode( $search ) ); 1199 } else { 1200 $search = urlencode( $search ); 1201 $search = str_replace( '%2F', '/', $search ); // %2F(/) is not valid within a URL, send it un-encoded. 1202 $link = str_replace( '%search%', $search, $permastruct ); 1203 $link = home_url( user_trailingslashit( $link, 'search' ) ); 1204 } 1205 1206 /** 1207 * Filters the search permalink. 1208 * 1209 * @since 3.0.0 1210 * 1211 * @param string $link Search permalink. 1212 * @param string $search The URL-encoded search term. 1213 */ 1214 return apply_filters( 'search_link', $link, $search ); 1215 } 1216 1217 /** 1218 * Retrieves the permalink for the search results feed. 1219 * 1220 * @since 2.5.0 1221 * 1222 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1223 * 1224 * @param string $search_query Optional. Search query. Default empty. 1225 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1226 * Default is the value of get_default_feed(). 1227 * @return string The search results feed permalink. 1228 */ 1229 function get_search_feed_link( $search_query = '', $feed = '' ) { 1230 global $wp_rewrite; 1231 $link = get_search_link( $search_query ); 1232 1233 if ( empty( $feed ) ) { 1234 $feed = get_default_feed(); 1235 } 1236 1237 $permastruct = $wp_rewrite->get_search_permastruct(); 1238 1239 if ( empty( $permastruct ) ) { 1240 $link = add_query_arg( 'feed', $feed, $link ); 1241 } else { 1242 $link = trailingslashit( $link ); 1243 $link .= "feed/$feed/"; 1244 } 1245 1246 /** 1247 * Filters the search feed link. 1248 * 1249 * @since 2.5.0 1250 * 1251 * @param string $link Search feed link. 1252 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 1253 * @param string $type The search type. One of 'posts' or 'comments'. 1254 */ 1255 return apply_filters( 'search_feed_link', $link, $feed, 'posts' ); 1256 } 1257 1258 /** 1259 * Retrieves the permalink for the search results comments feed. 1260 * 1261 * @since 2.5.0 1262 * 1263 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1264 * 1265 * @param string $search_query Optional. Search query. Default empty. 1266 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1267 * Default is the value of get_default_feed(). 1268 * @return string The comments feed search results permalink. 1269 */ 1270 function get_search_comments_feed_link( $search_query = '', $feed = '' ) { 1271 global $wp_rewrite; 1272 1273 if ( empty( $feed ) ) { 1274 $feed = get_default_feed(); 1275 } 1276 1277 $link = get_search_feed_link( $search_query, $feed ); 1278 1279 $permastruct = $wp_rewrite->get_search_permastruct(); 1280 1281 if ( empty( $permastruct ) ) { 1282 $link = add_query_arg( 'feed', 'comments-' . $feed, $link ); 1283 } else { 1284 $link = add_query_arg( 'withcomments', 1, $link ); 1285 } 1286 1287 /** This filter is documented in wp-includes/link-template.php */ 1288 return apply_filters( 'search_feed_link', $link, $feed, 'comments' ); 1289 } 1290 1291 /** 1292 * Retrieves the permalink for a post type archive. 1293 * 1294 * @since 3.1.0 1295 * @since 4.5.0 Support for posts was added. 1296 * 1297 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 1298 * 1299 * @param string $post_type Post type. 1300 * @return string|false The post type archive permalink. False if the post type 1301 * does not exist or does not have an archive. 1302 */ 1303 function get_post_type_archive_link( $post_type ) { 1304 global $wp_rewrite; 1305 1306 $post_type_obj = get_post_type_object( $post_type ); 1307 1308 if ( ! $post_type_obj ) { 1309 return false; 1310 } 1311 1312 if ( 'post' === $post_type ) { 1313 $show_on_front = get_option( 'show_on_front' ); 1314 $page_for_posts = get_option( 'page_for_posts' ); 1315 1316 if ( 'page' === $show_on_front && $page_for_posts ) { 1317 $link = get_permalink( $page_for_posts ); 1318 } else { 1319 $link = get_home_url(); 1320 } 1321 /** This filter is documented in wp-includes/link-template.php */ 1322 return apply_filters( 'post_type_archive_link', $link, $post_type ); 1323 } 1324 1325 if ( ! $post_type_obj->has_archive ) { 1326 return false; 1327 } 1328 1329 if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) { 1330 $struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive; 1331 if ( $post_type_obj->rewrite['with_front'] ) { 1332 $struct = $wp_rewrite->front . $struct; 1333 } else { 1334 $struct = $wp_rewrite->root . $struct; 1335 } 1336 $link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) ); 1337 } else { 1338 $link = home_url( '?post_type=' . $post_type ); 1339 } 1340 1341 /** 1342 * Filters the post type archive permalink. 1343 * 1344 * @since 3.1.0 1345 * 1346 * @param string $link The post type archive permalink. 1347 * @param string $post_type Post type name. 1348 */ 1349 return apply_filters( 'post_type_archive_link', $link, $post_type ); 1350 } 1351 1352 /** 1353 * Retrieves the permalink for a post type archive feed. 1354 * 1355 * @since 3.1.0 1356 * 1357 * @param string $post_type Post type. 1358 * @param string $feed Optional. Feed type. Possible values include 'rss2', 'atom'. 1359 * Default is the value of get_default_feed(). 1360 * @return string|false The post type feed permalink. False if the post type 1361 * does not exist or does not have an archive. 1362 */ 1363 function get_post_type_archive_feed_link( $post_type, $feed = '' ) { 1364 $default_feed = get_default_feed(); 1365 if ( empty( $feed ) ) { 1366 $feed = $default_feed; 1367 } 1368 1369 $link = get_post_type_archive_link( $post_type ); 1370 if ( ! $link ) { 1371 return false; 1372 } 1373 1374 $post_type_obj = get_post_type_object( $post_type ); 1375 if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) { 1376 $link = trailingslashit( $link ); 1377 $link .= 'feed/'; 1378 if ( $feed !== $default_feed ) { 1379 $link .= "$feed/"; 1380 } 1381 } else { 1382 $link = add_query_arg( 'feed', $feed, $link ); 1383 } 1384 1385 /** 1386 * Filters the post type archive feed link. 1387 * 1388 * @since 3.1.0 1389 * 1390 * @param string $link The post type archive feed link. 1391 * @param string $feed Feed type. Possible values include 'rss2', 'atom'. 1392 */ 1393 return apply_filters( 'post_type_archive_feed_link', $link, $feed ); 1394 } 1395 1396 /** 1397 * Retrieves the URL used for the post preview. 1398 * 1399 * Allows additional query args to be appended. 1400 * 1401 * @since 4.4.0 1402 * 1403 * @param int|WP_Post $post Optional. Post ID or `WP_Post` object. Defaults to global `$post`. 1404 * @param array $query_args Optional. Array of additional query args to be appended to the link. 1405 * Default empty array. 1406 * @param string $preview_link Optional. Base preview link to be used if it should differ from the 1407 * post permalink. Default empty. 1408 * @return string|null URL used for the post preview, or null if the post does not exist. 1409 */ 1410 function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) { 1411 $post = get_post( $post ); 1412 1413 if ( ! $post ) { 1414 return null; 1415 } 1416 1417 $post_type_object = get_post_type_object( $post->post_type ); 1418 if ( is_post_type_viewable( $post_type_object ) ) { 1419 if ( ! $preview_link ) { 1420 $preview_link = set_url_scheme( get_permalink( $post ) ); 1421 } 1422 1423 $query_args['preview'] = 'true'; 1424 $preview_link = add_query_arg( $query_args, $preview_link ); 1425 } 1426 1427 /** 1428 * Filters the URL used for a post preview. 1429 * 1430 * @since 2.0.5 1431 * @since 4.0.0 Added the `$post` parameter. 1432 * 1433 * @param string $preview_link URL used for the post preview. 1434 * @param WP_Post $post Post object. 1435 */ 1436 return apply_filters( 'preview_post_link', $preview_link, $post ); 1437 } 1438 1439 /** 1440 * Retrieves the edit post link for post. 1441 * 1442 * Can be used within the WordPress loop or outside of it. Can be used with 1443 * pages, posts, attachments, revisions, global styles, templates, and template parts. 1444 * 1445 * @since 2.3.0 1446 * @since 6.3.0 Adds custom link for wp_navigation post types. 1447 * Adds custom links for wp_template_part and wp_template post types. 1448 * 1449 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 1450 * @param string $context Optional. How to output the '&' character. Default '&'. 1451 * @return string|null The edit post link for the given post. Null if the post type does not exist 1452 * or does not allow an editing UI. 1453 */ 1454 function get_edit_post_link( $post = 0, $context = 'display' ) { 1455 $post = get_post( $post ); 1456 1457 if ( ! $post ) { 1458 return null; 1459 } 1460 1461 if ( 'revision' === $post->post_type ) { 1462 $action = ''; 1463 } elseif ( 'display' === $context ) { 1464 $action = '&action=edit'; 1465 } else { 1466 $action = '&action=edit'; 1467 } 1468 1469 $post_type_object = get_post_type_object( $post->post_type ); 1470 1471 if ( ! $post_type_object ) { 1472 return null; 1473 } 1474 1475 if ( ! current_user_can( 'edit_post', $post->ID ) ) { 1476 return null; 1477 } 1478 1479 $link = ''; 1480 1481 if ( 'wp_template' === $post->post_type || 'wp_template_part' === $post->post_type ) { 1482 $slug = urlencode( get_stylesheet() . '//' . $post->post_name ); 1483 $link = admin_url( sprintf( $post_type_object->_edit_link, $post->post_type, $slug ) ); 1484 } elseif ( 'wp_navigation' === $post->post_type ) { 1485 $link = admin_url( sprintf( $post_type_object->_edit_link, (string) $post->ID ) ); 1486 } elseif ( $post_type_object->_edit_link ) { 1487 $link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) ); 1488 } 1489 1490 /** 1491 * Filters the post edit link. 1492 * 1493 * @since 2.3.0 1494 * 1495 * @param string $link The edit link. 1496 * @param int $post_id Post ID. 1497 * @param string $context The link context. If set to 'display' then ampersands 1498 * are encoded. 1499 */ 1500 return apply_filters( 'get_edit_post_link', $link, $post->ID, $context ); 1501 } 1502 1503 /** 1504 * Displays the edit post link for post. 1505 * 1506 * @since 1.0.0 1507 * @since 4.4.0 The `$css_class` argument was added. 1508 * 1509 * @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null. 1510 * @param string $before Optional. Display before edit link. Default empty. 1511 * @param string $after Optional. Display after edit link. Default empty. 1512 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 1513 * @param string $css_class Optional. Add custom class to link. Default 'post-edit-link'. 1514 */ 1515 function edit_post_link( $text = null, $before = '', $after = '', $post = 0, $css_class = 'post-edit-link' ) { 1516 $post = get_post( $post ); 1517 1518 if ( ! $post ) { 1519 return; 1520 } 1521 1522 $url = get_edit_post_link( $post->ID ); 1523 1524 if ( ! $url ) { 1525 return; 1526 } 1527 1528 if ( null === $text ) { 1529 $text = __( 'Edit This' ); 1530 } 1531 1532 $link = '<a class="' . esc_attr( $css_class ) . '" href="' . esc_url( $url ) . '">' . $text . '</a>'; 1533 1534 /** 1535 * Filters the post edit link anchor tag. 1536 * 1537 * @since 2.3.0 1538 * 1539 * @param string $link Anchor tag for the edit link. 1540 * @param int $post_id Post ID. 1541 * @param string $text Anchor text. 1542 */ 1543 echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $after; 1544 } 1545 1546 /** 1547 * Retrieves the delete posts link for post. 1548 * 1549 * Can be used within the WordPress loop or outside of it, with any post type. 1550 * 1551 * @since 2.9.0 1552 * 1553 * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`. 1554 * @param string $deprecated Not used. 1555 * @param bool $force_delete Optional. Whether to bypass Trash and force deletion. Default false. 1556 * @return string|null The delete post link URL for the given post. 1557 */ 1558 function get_delete_post_link( $post = 0, $deprecated = '', $force_delete = false ) { 1559 if ( ! empty( $deprecated ) ) { 1560 _deprecated_argument( __FUNCTION__, '3.0.0' ); 1561 } 1562 1563 $post = get_post( $post ); 1564 1565 if ( ! $post ) { 1566 return null; 1567 } 1568 1569 $post_type_object = get_post_type_object( $post->post_type ); 1570 1571 if ( ! $post_type_object ) { 1572 return null; 1573 } 1574 1575 if ( ! current_user_can( 'delete_post', $post->ID ) ) { 1576 return null; 1577 } 1578 1579 $action = ( $force_delete || ! EMPTY_TRASH_DAYS ) ? 'delete' : 'trash'; 1580 1581 $delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) ); 1582 1583 /** 1584 * Filters the post delete link. 1585 * 1586 * @since 2.9.0 1587 * 1588 * @param string $link The delete link. 1589 * @param int $post_id Post ID. 1590 * @param bool $force_delete Whether to bypass the Trash and force deletion. Default false. 1591 */ 1592 return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete ); 1593 } 1594 1595 /** 1596 * Retrieves the edit comment link. 1597 * 1598 * @since 2.3.0 1599 * @since 6.7.0 The $context parameter was added. 1600 * 1601 * @param int|WP_Comment $comment_id Optional. Comment ID or WP_Comment object. 1602 * @param string $context Optional. Context in which the URL should be used. Either 'display', 1603 * to include HTML entities, or 'url'. Default 'display'. 1604 * @return string|null The edit comment link URL for the given comment, or null if the comment does not exist or 1605 * the current user is not allowed to edit it. 1606 */ 1607 function get_edit_comment_link( $comment_id = 0, $context = 'display' ) { 1608 $comment = get_comment( $comment_id ); 1609 1610 if ( ! is_object( $comment ) || ! current_user_can( 'edit_comment', $comment->comment_ID ) ) { 1611 return null; 1612 } 1613 1614 if ( 'display' === $context ) { 1615 $action = 'comment.php?action=editcomment&c='; 1616 } else { 1617 $action = 'comment.php?action=editcomment&c='; 1618 } 1619 1620 $location = admin_url( $action ) . $comment->comment_ID; 1621 1622 // Ensure the $comment_id variable passed to the filter is always an ID. 1623 $comment_id = (int) $comment->comment_ID; 1624 1625 /** 1626 * Filters the comment edit link. 1627 * 1628 * @since 2.3.0 1629 * @since 6.7.0 The `$comment_id` and `$context` parameters are now being passed to the filter. 1630 * 1631 * @param string $location The edit link. 1632 * @param int $comment_id Unique ID of the comment to generate an edit link. 1633 * @param string $context Context to include HTML entities in link. Default 'display'. 1634 */ 1635 return apply_filters( 'get_edit_comment_link', $location, $comment_id, $context ); 1636 } 1637 1638 /** 1639 * Displays the edit comment link with formatting. 1640 * 1641 * @since 1.0.0 1642 * 1643 * @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null. 1644 * @param string $before Optional. Display before edit link. Default empty. 1645 * @param string $after Optional. Display after edit link. Default empty. 1646 */ 1647 function edit_comment_link( $text = null, $before = '', $after = '' ) { 1648 $comment = get_comment(); 1649 1650 if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) { 1651 return; 1652 } 1653 1654 if ( null === $text ) { 1655 $text = __( 'Edit This' ); 1656 } 1657 1658 $link = '<a class="comment-edit-link" href="' . esc_url( get_edit_comment_link( $comment ) ) . '">' . $text . '</a>'; 1659 1660 /** 1661 * Filters the comment edit link anchor tag. 1662 * 1663 * @since 2.3.0 1664 * 1665 * @param string $link Anchor tag for the edit link. 1666 * @param string $comment_id Comment ID as a numeric string. 1667 * @param string $text Anchor text. 1668 */ 1669 echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after; 1670 } 1671 1672 /** 1673 * Displays the edit bookmark link. 1674 * 1675 * @since 2.7.0 1676 * 1677 * @param int|stdClass $link Optional. Bookmark ID. Default is the ID of the current bookmark. 1678 * @return string|null The edit bookmark link URL. 1679 */ 1680 function get_edit_bookmark_link( $link = 0 ) { 1681 $link = get_bookmark( $link ); 1682 1683 if ( ! current_user_can( 'manage_links' ) ) { 1684 return null; 1685 } 1686 1687 $location = admin_url( 'link.php?action=edit&link_id=' ) . $link->link_id; 1688 1689 /** 1690 * Filters the bookmark edit link. 1691 * 1692 * @since 2.7.0 1693 * 1694 * @param string $location The edit link. 1695 * @param int $link_id Bookmark ID. 1696 */ 1697 return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id ); 1698 } 1699 1700 /** 1701 * Displays the edit bookmark link anchor content. 1702 * 1703 * @since 2.7.0 1704 * 1705 * @param string $link Optional. Anchor text. If empty, default is 'Edit This'. Default empty. 1706 * @param string $before Optional. Display before edit link. Default empty. 1707 * @param string $after Optional. Display after edit link. Default empty. 1708 * @param int $bookmark Optional. Bookmark ID. Default is the current bookmark. 1709 */ 1710 function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) { 1711 $bookmark = get_bookmark( $bookmark ); 1712 1713 if ( ! current_user_can( 'manage_links' ) ) { 1714 return; 1715 } 1716 1717 if ( empty( $link ) ) { 1718 $link = __( 'Edit This' ); 1719 } 1720 1721 $link = '<a href="' . esc_url( get_edit_bookmark_link( $bookmark ) ) . '">' . $link . '</a>'; 1722 1723 /** 1724 * Filters the bookmark edit link anchor tag. 1725 * 1726 * @since 2.7.0 1727 * 1728 * @param string $link Anchor tag for the edit link. 1729 * @param int $link_id Bookmark ID. 1730 */ 1731 echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after; 1732 } 1733 1734 /** 1735 * Retrieves the edit user link. 1736 * 1737 * @since 3.5.0 1738 * 1739 * @param int $user_id Optional. User ID. Defaults to the current user. 1740 * @return string URL to edit user page or empty string. 1741 */ 1742 function get_edit_user_link( $user_id = null ) { 1743 if ( ! $user_id ) { 1744 $user_id = get_current_user_id(); 1745 } 1746 1747 if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) ) { 1748 return ''; 1749 } 1750 1751 $user = get_userdata( $user_id ); 1752 1753 if ( ! $user ) { 1754 return ''; 1755 } 1756 1757 if ( get_current_user_id() === $user->ID ) { 1758 $link = get_edit_profile_url( $user->ID ); 1759 } else { 1760 $link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) ); 1761 } 1762 1763 /** 1764 * Filters the user edit link. 1765 * 1766 * @since 3.5.0 1767 * 1768 * @param string $link The edit link. 1769 * @param int $user_id User ID. 1770 */ 1771 return apply_filters( 'get_edit_user_link', $link, $user->ID ); 1772 } 1773 1774 // 1775 // Navigation links. 1776 // 1777 1778 /** 1779 * Retrieves the previous post that is adjacent to the current post. 1780 * 1781 * @since 1.5.0 1782 * 1783 * @param bool $in_same_term Optional. Whether post should be in the same taxonomy term. 1784 * Default false. 1785 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 1786 * Default empty. 1787 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 1788 * @return WP_Post|null|string Post object if successful. Null if global `$post` is not set. 1789 * Empty string if no corresponding post exists. 1790 */ 1791 function get_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1792 return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy ); 1793 } 1794 1795 /** 1796 * Retrieves the next post that is adjacent to the current post. 1797 * 1798 * @since 1.5.0 1799 * 1800 * @param bool $in_same_term Optional. Whether post should be in the same taxonomy term. 1801 * Default false. 1802 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 1803 * Default empty. 1804 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 1805 * @return WP_Post|null|string Post object if successful. Null if global `$post` is not set. 1806 * Empty string if no corresponding post exists. 1807 */ 1808 function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 1809 return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy ); 1810 } 1811 1812 /** 1813 * Retrieves the adjacent post. 1814 * 1815 * Can either be next or previous post. 1816 * 1817 * @since 2.5.0 1818 * 1819 * @global wpdb $wpdb WordPress database abstraction object. 1820 * 1821 * @param bool $in_same_term Optional. Whether post should be in the same taxonomy term. 1822 * Default false. 1823 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 1824 * Default empty string. 1825 * @param bool $previous Optional. Whether to retrieve previous post. 1826 * Default true. 1827 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 1828 * @return WP_Post|null|string Post object if successful. Null if global `$post` is not set. 1829 * Empty string if no corresponding post exists. 1830 */ 1831 function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 1832 global $wpdb; 1833 1834 $post = get_post(); 1835 1836 if ( ! $post || ! taxonomy_exists( $taxonomy ) ) { 1837 return null; 1838 } 1839 1840 $current_post_date = $post->post_date; 1841 1842 $join = ''; 1843 $where = ''; 1844 $adjacent = $previous ? 'previous' : 'next'; 1845 1846 if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) { 1847 // Back-compat, $excluded_terms used to be $excluded_categories with IDs separated by " and ". 1848 if ( str_contains( $excluded_terms, ' and ' ) ) { 1849 _deprecated_argument( 1850 __FUNCTION__, 1851 '3.3.0', 1852 sprintf( 1853 /* translators: %s: The word 'and'. */ 1854 __( 'Use commas instead of %s to separate excluded terms.' ), 1855 "'and'" 1856 ) 1857 ); 1858 $excluded_terms = explode( ' and ', $excluded_terms ); 1859 } else { 1860 $excluded_terms = explode( ',', $excluded_terms ); 1861 } 1862 1863 $excluded_terms = array_map( 'intval', $excluded_terms ); 1864 } 1865 1866 /** 1867 * Filters the IDs of terms excluded from adjacent post queries. 1868 * 1869 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1870 * of adjacency, 'next' or 'previous'. 1871 * 1872 * Possible hook names include: 1873 * 1874 * - `get_next_post_excluded_terms` 1875 * - `get_previous_post_excluded_terms` 1876 * 1877 * @since 4.4.0 1878 * 1879 * @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided. 1880 */ 1881 $excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms ); 1882 1883 if ( $in_same_term || ! empty( $excluded_terms ) ) { 1884 if ( $in_same_term ) { 1885 $join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id"; 1886 $where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy ); 1887 1888 if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) { 1889 return ''; 1890 } 1891 $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); 1892 if ( is_wp_error( $term_array ) ) { 1893 return ''; 1894 } 1895 1896 // Remove any exclusions from the term array to include. 1897 $term_array = array_diff( $term_array, (array) $excluded_terms ); 1898 1899 if ( ! $term_array ) { 1900 return ''; 1901 } 1902 1903 $term_array = array_map( 'intval', $term_array ); 1904 1905 $where .= ' AND tt.term_id IN (' . implode( ',', $term_array ) . ')'; 1906 } 1907 1908 if ( ! empty( $excluded_terms ) ) { 1909 $where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )'; 1910 } 1911 } 1912 1913 // 'post_status' clause depends on the current user. 1914 if ( is_user_logged_in() ) { 1915 $user_id = get_current_user_id(); 1916 1917 $post_type_object = get_post_type_object( $post->post_type ); 1918 if ( empty( $post_type_object ) ) { 1919 $post_type_cap = $post->post_type; 1920 $read_private_cap = 'read_private_' . $post_type_cap . 's'; 1921 } else { 1922 $read_private_cap = $post_type_object->cap->read_private_posts; 1923 } 1924 1925 /* 1926 * Results should include private posts belonging to the current user, or private posts where the 1927 * current user has the 'read_private_posts' cap. 1928 */ 1929 $private_states = get_post_stati( array( 'private' => true ) ); 1930 $where .= " AND ( p.post_status = 'publish'"; 1931 foreach ( $private_states as $state ) { 1932 if ( current_user_can( $read_private_cap ) ) { 1933 $where .= $wpdb->prepare( ' OR p.post_status = %s', $state ); 1934 } else { 1935 $where .= $wpdb->prepare( ' OR (p.post_author = %d AND p.post_status = %s)', $user_id, $state ); 1936 } 1937 } 1938 $where .= ' )'; 1939 } else { 1940 $where .= " AND p.post_status = 'publish'"; 1941 } 1942 1943 $comparison_operator = $previous ? '<' : '>'; 1944 $order = $previous ? 'DESC' : 'ASC'; 1945 1946 /** 1947 * Filters the JOIN clause in the SQL for an adjacent post query. 1948 * 1949 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1950 * of adjacency, 'next' or 'previous'. 1951 * 1952 * Possible hook names include: 1953 * 1954 * - `get_next_post_join` 1955 * - `get_previous_post_join` 1956 * 1957 * @since 2.5.0 1958 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters. 1959 * 1960 * @param string $join The JOIN clause in the SQL. 1961 * @param bool $in_same_term Whether post should be in the same taxonomy term. 1962 * @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided. 1963 * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true. 1964 * @param WP_Post $post WP_Post object. 1965 */ 1966 $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post ); 1967 1968 // Prepare the where clause for the adjacent post query. 1969 $where_prepared = $wpdb->prepare( "WHERE (p.post_date $comparison_operator %s OR (p.post_date = %s AND p.ID $comparison_operator %d)) AND p.post_type = %s $where", $current_post_date, $current_post_date, $post->ID, $post->post_type ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- $comparison_operator is a string literal, either '<' or '>'. 1970 1971 /** 1972 * Filters the WHERE clause in the SQL for an adjacent post query. 1973 * 1974 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1975 * of adjacency, 'next' or 'previous'. 1976 * 1977 * Possible hook names include: 1978 * 1979 * - `get_next_post_where` 1980 * - `get_previous_post_where` 1981 * 1982 * @since 2.5.0 1983 * @since 4.4.0 Added the `$taxonomy` and `$post` parameters. 1984 * @since 6.9.0 Adds ID-based fallback for posts with identical dates in adjacent post queries. 1985 * 1986 * @param string $where The `WHERE` clause in the SQL. 1987 * @param bool $in_same_term Whether post should be in the same taxonomy term. 1988 * @param int[]|string $excluded_terms Array of excluded term IDs. Empty string if none were provided. 1989 * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true. 1990 * @param WP_Post $post WP_Post object. 1991 */ 1992 $where = apply_filters( "get_{$adjacent}_post_where", $where_prepared, $in_same_term, $excluded_terms, $taxonomy, $post ); 1993 1994 /** 1995 * Filters the ORDER BY clause in the SQL for an adjacent post query. 1996 * 1997 * The dynamic portion of the hook name, `$adjacent`, refers to the type 1998 * of adjacency, 'next' or 'previous'. 1999 * 2000 * Possible hook names include: 2001 * 2002 * - `get_next_post_sort` 2003 * - `get_previous_post_sort` 2004 * 2005 * @since 2.5.0 2006 * @since 4.4.0 Added the `$post` parameter. 2007 * @since 4.9.0 Added the `$order` parameter. 2008 * @since 6.9.0 Adds ID sort to ensure deterministic ordering for posts with identical dates. 2009 * 2010 * @param string $order_by The `ORDER BY` clause in the SQL. 2011 * @param WP_Post $post WP_Post object. 2012 * @param string $order Sort order. 'DESC' for previous post, 'ASC' for next. 2013 */ 2014 $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order, p.ID $order LIMIT 1", $post, $order ); 2015 2016 $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort"; 2017 $key = md5( $query ); 2018 $last_changed = (array) wp_cache_get_last_changed( 'posts' ); 2019 if ( $in_same_term || ! empty( $excluded_terms ) ) { 2020 $last_changed[] = wp_cache_get_last_changed( 'terms' ); 2021 } 2022 $cache_key = "adjacent_post:$key"; 2023 2024 $result = wp_cache_get_salted( $cache_key, 'post-queries', $last_changed ); 2025 if ( false !== $result ) { 2026 if ( $result ) { 2027 $result = get_post( $result ); 2028 } 2029 return $result; 2030 } 2031 2032 $result = $wpdb->get_var( $query ); 2033 if ( null === $result ) { 2034 $result = ''; 2035 } 2036 2037 wp_cache_set_salted( $cache_key, $result, 'post-queries', $last_changed ); 2038 2039 if ( $result ) { 2040 $result = get_post( $result ); 2041 } 2042 2043 return $result; 2044 } 2045 2046 /** 2047 * Retrieves the adjacent post relational link. 2048 * 2049 * Can either be next or previous post relational link. 2050 * 2051 * @since 2.8.0 2052 * 2053 * @param string $title Optional. Link title format. Default '%title'. 2054 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2055 * Default false. 2056 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2057 * Default empty. 2058 * @param bool $previous Optional. Whether to display link to previous or next post. 2059 * Default true. 2060 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2061 * @return string|null The adjacent post relational link URL. 2062 */ 2063 function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 2064 $post = get_post(); 2065 if ( $previous && is_attachment() && $post ) { 2066 $post = get_post( $post->post_parent ); 2067 } else { 2068 $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); 2069 } 2070 2071 if ( empty( $post ) ) { 2072 return null; 2073 } 2074 2075 $post_title = the_title_attribute( 2076 array( 2077 'echo' => false, 2078 'post' => $post, 2079 ) 2080 ); 2081 2082 if ( empty( $post_title ) ) { 2083 $post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' ); 2084 } 2085 2086 $date = mysql2date( get_option( 'date_format' ), $post->post_date ); 2087 2088 $title = str_replace( '%title', $post_title, $title ); 2089 $title = str_replace( '%date', $date, $title ); 2090 2091 $link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='"; 2092 $link .= esc_attr( $title ); 2093 $link .= "' href='" . get_permalink( $post ) . "' />\n"; 2094 2095 $adjacent = $previous ? 'previous' : 'next'; 2096 2097 /** 2098 * Filters the adjacent post relational link. 2099 * 2100 * The dynamic portion of the hook name, `$adjacent`, refers to the type 2101 * of adjacency, 'next' or 'previous'. 2102 * 2103 * Possible hook names include: 2104 * 2105 * - `next_post_rel_link` 2106 * - `previous_post_rel_link` 2107 * 2108 * @since 2.8.0 2109 * 2110 * @param string $link The relational link. 2111 */ 2112 return apply_filters( "{$adjacent}_post_rel_link", $link ); 2113 } 2114 2115 /** 2116 * Displays the relational links for the posts adjacent to the current post. 2117 * 2118 * @since 2.8.0 2119 * 2120 * @param string $title Optional. Link title format. Default '%title'. 2121 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2122 * Default false. 2123 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2124 * Default empty. 2125 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2126 */ 2127 function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2128 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); 2129 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); 2130 } 2131 2132 /** 2133 * Displays relational links for the posts adjacent to the current post for single post pages. 2134 * 2135 * This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins 2136 * or theme templates. 2137 * 2138 * @since 3.0.0 2139 * @since 5.6.0 No longer used in core. 2140 * 2141 * @see adjacent_posts_rel_link() 2142 */ 2143 function adjacent_posts_rel_link_wp_head() { 2144 if ( ! is_single() || is_attachment() ) { 2145 return; 2146 } 2147 adjacent_posts_rel_link(); 2148 } 2149 2150 /** 2151 * Displays the relational link for the next post adjacent to the current post. 2152 * 2153 * @since 2.8.0 2154 * 2155 * @see get_adjacent_post_rel_link() 2156 * 2157 * @param string $title Optional. Link title format. Default '%title'. 2158 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2159 * Default false. 2160 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2161 * Default empty. 2162 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2163 */ 2164 function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2165 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); 2166 } 2167 2168 /** 2169 * Displays the relational link for the previous post adjacent to the current post. 2170 * 2171 * @since 2.8.0 2172 * 2173 * @see get_adjacent_post_rel_link() 2174 * 2175 * @param string $title Optional. Link title format. Default '%title'. 2176 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2177 * Default false. 2178 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2179 * Default true. 2180 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2181 */ 2182 function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2183 echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); 2184 } 2185 2186 /** 2187 * Retrieves the boundary post. 2188 * 2189 * Boundary being either the first or last post by publish date within the constraints specified 2190 * by `$in_same_term` or `$excluded_terms`. 2191 * 2192 * @since 2.8.0 2193 * 2194 * @param bool $in_same_term Optional. Whether returned post should be in the same taxonomy term. 2195 * Default false. 2196 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2197 * Default empty. 2198 * @param bool $start Optional. Whether to retrieve first or last post. 2199 * Default true. 2200 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2201 * @return array|null Array containing the boundary post object if successful, null otherwise. 2202 */ 2203 function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) { 2204 $post = get_post(); 2205 2206 if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) { 2207 return null; 2208 } 2209 2210 $query_args = array( 2211 'posts_per_page' => 1, 2212 'order' => $start ? 'ASC' : 'DESC', 2213 'update_post_term_cache' => false, 2214 'update_post_meta_cache' => false, 2215 ); 2216 2217 $term_array = array(); 2218 2219 if ( ! is_array( $excluded_terms ) ) { 2220 if ( ! empty( $excluded_terms ) ) { 2221 $excluded_terms = explode( ',', $excluded_terms ); 2222 } else { 2223 $excluded_terms = array(); 2224 } 2225 } 2226 2227 if ( $in_same_term || ! empty( $excluded_terms ) ) { 2228 if ( $in_same_term ) { 2229 $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); 2230 } 2231 2232 if ( ! empty( $excluded_terms ) ) { 2233 $excluded_terms = array_map( 'intval', $excluded_terms ); 2234 $excluded_terms = array_diff( $excluded_terms, $term_array ); 2235 2236 $inverse_terms = array(); 2237 foreach ( $excluded_terms as $excluded_term ) { 2238 $inverse_terms[] = $excluded_term * -1; 2239 } 2240 $excluded_terms = $inverse_terms; 2241 } 2242 2243 $query_args['tax_query'] = array( 2244 array( 2245 'taxonomy' => $taxonomy, 2246 'terms' => array_merge( $term_array, $excluded_terms ), 2247 ), 2248 ); 2249 } 2250 2251 return get_posts( $query_args ); 2252 } 2253 2254 /** 2255 * Retrieves the previous post link that is adjacent to the current post. 2256 * 2257 * @since 3.7.0 2258 * 2259 * @param string $format Optional. Link anchor format. Default '« %link'. 2260 * @param string $link Optional. Link permalink format. Default '%title'. 2261 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2262 * Default false. 2263 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2264 * Default empty. 2265 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2266 * @return string The link URL of the previous post in relation to the current post. 2267 */ 2268 function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2269 return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy ); 2270 } 2271 2272 /** 2273 * Displays the previous post link that is adjacent to the current post. 2274 * 2275 * @since 1.5.0 2276 * 2277 * @see get_previous_post_link() 2278 * 2279 * @param string $format Optional. Link anchor format. Default '« %link'. 2280 * @param string $link Optional. Link permalink format. Default '%title'. 2281 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2282 * Default false. 2283 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2284 * Default empty. 2285 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2286 */ 2287 function previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2288 echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); 2289 } 2290 2291 /** 2292 * Retrieves the next post link that is adjacent to the current post. 2293 * 2294 * @since 3.7.0 2295 * 2296 * @param string $format Optional. Link anchor format. Default '%link »'. 2297 * @param string $link Optional. Link permalink format. Default '%title'. 2298 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2299 * Default false. 2300 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2301 * Default empty. 2302 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2303 * @return string The link URL of the next post in relation to the current post. 2304 */ 2305 function get_next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2306 return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy ); 2307 } 2308 2309 /** 2310 * Displays the next post link that is adjacent to the current post. 2311 * 2312 * @since 1.5.0 2313 * 2314 * @see get_next_post_link() 2315 * 2316 * @param string $format Optional. Link anchor format. Default '%link »'. 2317 * @param string $link Optional. Link permalink format. Default '%title'. 2318 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2319 * Default false. 2320 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. 2321 * Default empty. 2322 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2323 */ 2324 function next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { 2325 echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); 2326 } 2327 2328 /** 2329 * Retrieves the adjacent post link. 2330 * 2331 * Can be either next post link or previous. 2332 * 2333 * @since 3.7.0 2334 * 2335 * @param string $format Link anchor format. 2336 * @param string $link Link permalink format. 2337 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2338 * Default false. 2339 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs. 2340 * Default empty. 2341 * @param bool $previous Optional. Whether to display link to previous or next post. 2342 * Default true. 2343 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2344 * @return string The link URL of the previous or next post in relation to the current post. 2345 */ 2346 function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 2347 if ( $previous && is_attachment() ) { 2348 $post = get_post( get_post()->post_parent ); 2349 } else { 2350 $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); 2351 } 2352 2353 if ( ! $post ) { 2354 $output = ''; 2355 } else { 2356 $title = $post->post_title; 2357 2358 if ( empty( $post->post_title ) ) { 2359 $title = $previous ? __( 'Previous Post' ) : __( 'Next Post' ); 2360 } 2361 2362 /** This filter is documented in wp-includes/post-template.php */ 2363 $title = apply_filters( 'the_title', $title, $post->ID ); 2364 2365 $date = mysql2date( get_option( 'date_format' ), $post->post_date ); 2366 $rel = $previous ? 'prev' : 'next'; 2367 2368 $string = '<a href="' . get_permalink( $post ) . '" rel="' . $rel . '">'; 2369 $inlink = str_replace( '%title', $title, $link ); 2370 $inlink = str_replace( '%date', $date, $inlink ); 2371 $inlink = $string . $inlink . '</a>'; 2372 2373 $output = str_replace( '%link', $inlink, $format ); 2374 } 2375 2376 $adjacent = $previous ? 'previous' : 'next'; 2377 2378 /** 2379 * Filters the adjacent post link. 2380 * 2381 * The dynamic portion of the hook name, `$adjacent`, refers to the type 2382 * of adjacency, 'next' or 'previous'. 2383 * 2384 * Possible hook names include: 2385 * 2386 * - `next_post_link` 2387 * - `previous_post_link` 2388 * 2389 * @since 2.6.0 2390 * @since 4.2.0 Added the `$adjacent` parameter. 2391 * 2392 * @param string $output The adjacent post link. 2393 * @param string $format Link anchor format. 2394 * @param string $link Link permalink format. 2395 * @param WP_Post|string $post The adjacent post. Empty string if no corresponding post exists. 2396 * @param string $adjacent Whether the post is previous or next. 2397 */ 2398 return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post, $adjacent ); 2399 } 2400 2401 /** 2402 * Displays the adjacent post link. 2403 * 2404 * Can be either next post link or previous. 2405 * 2406 * @since 2.5.0 2407 * 2408 * @param string $format Link anchor format. 2409 * @param string $link Link permalink format. 2410 * @param bool $in_same_term Optional. Whether link should be in the same taxonomy term. 2411 * Default false. 2412 * @param int[]|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs. 2413 * Default empty. 2414 * @param bool $previous Optional. Whether to display link to previous or next post. 2415 * Default true. 2416 * @param string $taxonomy Optional. Taxonomy, if `$in_same_term` is true. Default 'category'. 2417 */ 2418 function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { 2419 echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy ); 2420 } 2421 2422 /** 2423 * Retrieves the link for a page number. 2424 * 2425 * @since 1.5.0 2426 * 2427 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 2428 * 2429 * @param int $pagenum Optional. Page number. Default 1. 2430 * @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). 2431 * If set to false, prepares the URL with sanitize_url(). Default true. 2432 * @return string The link URL for the given page number. 2433 */ 2434 function get_pagenum_link( $pagenum = 1, $escape = true ) { 2435 global $wp_rewrite; 2436 2437 $pagenum = (int) $pagenum; 2438 2439 $request = remove_query_arg( 'paged' ); 2440 2441 $home_root = parse_url( home_url() ); 2442 $home_root = $home_root['path'] ?? ''; 2443 $home_root = preg_quote( $home_root, '|' ); 2444 2445 $request = preg_replace( '|^' . $home_root . '|i', '', $request ); 2446 $request = preg_replace( '|^/+|', '', $request ); 2447 2448 if ( ! $wp_rewrite->using_permalinks() || is_admin() ) { 2449 $base = trailingslashit( get_bloginfo( 'url' ) ); 2450 2451 if ( $pagenum > 1 ) { 2452 $result = add_query_arg( 'paged', $pagenum, $base . $request ); 2453 } else { 2454 $result = $base . $request; 2455 } 2456 } else { 2457 $qs_regex = '|\?.*?$|'; 2458 preg_match( $qs_regex, $request, $qs_match ); 2459 2460 $parts = array(); 2461 $parts[] = untrailingslashit( get_bloginfo( 'url' ) ); 2462 2463 if ( ! empty( $qs_match[0] ) ) { 2464 $query_string = $qs_match[0]; 2465 $request = preg_replace( $qs_regex, '', $request ); 2466 } else { 2467 $query_string = ''; 2468 } 2469 2470 $request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request ); 2471 $request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request ); 2472 $request = ltrim( $request, '/' ); 2473 2474 if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' !== $request ) ) { 2475 $parts[] = $wp_rewrite->index; 2476 } 2477 2478 $parts[] = untrailingslashit( $request ); 2479 2480 if ( $pagenum > 1 ) { 2481 $parts[] = $wp_rewrite->pagination_base; 2482 $parts[] = $pagenum; 2483 } 2484 2485 $result = user_trailingslashit( implode( '/', array_filter( $parts ) ), 'paged' ); 2486 if ( ! empty( $query_string ) ) { 2487 $result .= $query_string; 2488 } 2489 } 2490 2491 /** 2492 * Filters the page number link for the current request. 2493 * 2494 * @since 2.5.0 2495 * @since 5.2.0 Added the `$pagenum` argument. 2496 * 2497 * @param string $result The page number link. 2498 * @param int $pagenum The page number. 2499 */ 2500 $result = apply_filters( 'get_pagenum_link', $result, $pagenum ); 2501 2502 if ( $escape ) { 2503 return esc_url( $result ); 2504 } else { 2505 return sanitize_url( $result ); 2506 } 2507 } 2508 2509 /** 2510 * Retrieves the next posts page link. 2511 * 2512 * Backported from 2.1.3 to 2.0.10. 2513 * 2514 * @since 2.0.10 2515 * 2516 * @global int $paged 2517 * 2518 * @param int $max_page Optional. Max pages. Default 0. 2519 * @return string|null The link URL for next posts page. 2520 */ 2521 function get_next_posts_page_link( $max_page = 0 ) { 2522 global $paged; 2523 2524 if ( ! is_single() ) { 2525 if ( ! $paged ) { 2526 $paged = 1; 2527 } 2528 2529 $next_page = (int) $paged + 1; 2530 2531 if ( ! $max_page || $max_page >= $next_page ) { 2532 return get_pagenum_link( $next_page ); 2533 } 2534 } 2535 2536 return null; 2537 } 2538 2539 /** 2540 * Displays or retrieves the next posts page link. 2541 * 2542 * @since 0.71 2543 * 2544 * @param int $max_page Optional. Max pages. Default 0. 2545 * @param bool $display Optional. Whether to echo the link. Default true. 2546 * @return string|void The next posts page link when `$display` is false, or an empty 2547 * string when there is no next page. Nothing otherwise. 2548 * @phpstan-return ( $display is true ? void : string ) 2549 */ 2550 function next_posts( $max_page = 0, $display = true ) { 2551 $link = get_next_posts_page_link( $max_page ); 2552 $output = $link ? esc_url( $link ) : ''; 2553 2554 if ( ! $display ) { 2555 return $output; 2556 } 2557 2558 echo $output; 2559 } 2560 2561 /** 2562 * Retrieves the next posts page link. 2563 * 2564 * @since 2.7.0 2565 * 2566 * @global int $paged 2567 * @global WP_Query $wp_query WordPress Query object. 2568 * 2569 * @param string $label Content for link text. 2570 * @param int $max_page Optional. Max pages. Default 0. 2571 * @return string|null HTML-formatted next posts page link. 2572 */ 2573 function get_next_posts_link( $label = null, $max_page = 0 ) { 2574 global $paged, $wp_query; 2575 2576 if ( ! $max_page ) { 2577 $max_page = $wp_query->max_num_pages; 2578 } 2579 2580 if ( ! $paged ) { 2581 $paged = 1; 2582 } 2583 2584 $next_page = (int) $paged + 1; 2585 2586 if ( null === $label ) { 2587 $label = __( 'Next Page »' ); 2588 } 2589 2590 if ( ! is_single() && ( $next_page <= $max_page ) ) { 2591 /** 2592 * Filters the anchor tag attributes for the next posts page link. 2593 * 2594 * @since 2.7.0 2595 * 2596 * @param string $attributes Attributes for the anchor tag. 2597 */ 2598 $attr = apply_filters( 'next_posts_link_attributes', '' ); 2599 2600 return sprintf( 2601 '<a href="%1$s" %2$s>%3$s</a>', 2602 next_posts( $max_page, false ), 2603 $attr, 2604 preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) 2605 ); 2606 } 2607 2608 return null; 2609 } 2610 2611 /** 2612 * Displays the next posts page link. 2613 * 2614 * @since 0.71 2615 * 2616 * @param string $label Content for link text. 2617 * @param int $max_page Optional. Max pages. Default 0. 2618 */ 2619 function next_posts_link( $label = null, $max_page = 0 ) { 2620 echo get_next_posts_link( $label, $max_page ); 2621 } 2622 2623 /** 2624 * Retrieves the previous posts page link. 2625 * 2626 * Will only return string, if not on a single page or post. 2627 * 2628 * Backported to 2.0.10 from 2.1.3. 2629 * 2630 * @since 2.0.10 2631 * 2632 * @global int $paged 2633 * 2634 * @return string|null The link for the previous posts page. 2635 */ 2636 function get_previous_posts_page_link() { 2637 global $paged; 2638 2639 if ( ! is_single() ) { 2640 $previous_page = (int) $paged - 1; 2641 2642 if ( $previous_page < 1 ) { 2643 $previous_page = 1; 2644 } 2645 2646 return get_pagenum_link( $previous_page ); 2647 } 2648 2649 return null; 2650 } 2651 2652 /** 2653 * Displays or retrieves the previous posts page link. 2654 * 2655 * @since 0.71 2656 * 2657 * @param bool $display Optional. Whether to echo the link. Default true. 2658 * @return string|void The previous posts page link when `$display` is false, or an empty 2659 * string when there is no previous page. Nothing otherwise. 2660 * @phpstan-return ( $display is true ? void : string ) 2661 */ 2662 function previous_posts( $display = true ) { 2663 $link = get_previous_posts_page_link(); 2664 $output = $link ? esc_url( $link ) : ''; 2665 2666 if ( ! $display ) { 2667 return $output; 2668 } 2669 2670 echo $output; 2671 } 2672 2673 /** 2674 * Retrieves the previous posts page link. 2675 * 2676 * @since 2.7.0 2677 * 2678 * @global int $paged 2679 * 2680 * @param string $label Optional. Previous page link text. 2681 * @return string|null HTML-formatted previous page link. 2682 */ 2683 function get_previous_posts_link( $label = null ) { 2684 global $paged; 2685 2686 if ( null === $label ) { 2687 $label = __( '« Previous Page' ); 2688 } 2689 2690 if ( ! is_single() && $paged > 1 ) { 2691 /** 2692 * Filters the anchor tag attributes for the previous posts page link. 2693 * 2694 * @since 2.7.0 2695 * 2696 * @param string $attributes Attributes for the anchor tag. 2697 */ 2698 $attr = apply_filters( 'previous_posts_link_attributes', '' ); 2699 2700 return sprintf( 2701 '<a href="%1$s" %2$s>%3$s</a>', 2702 previous_posts( false ), 2703 $attr, 2704 preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) 2705 ); 2706 } 2707 2708 return null; 2709 } 2710 2711 /** 2712 * Displays the previous posts page link. 2713 * 2714 * @since 0.71 2715 * 2716 * @param string $label Optional. Previous page link text. 2717 */ 2718 function previous_posts_link( $label = null ) { 2719 echo get_previous_posts_link( $label ); 2720 } 2721 2722 /** 2723 * Retrieves the post pages link navigation for previous and next pages. 2724 * 2725 * @since 2.8.0 2726 * 2727 * @global WP_Query $wp_query WordPress Query object. 2728 * 2729 * @param string|array $args { 2730 * Optional. Arguments to build the post pages link navigation. 2731 * 2732 * @type string $sep Separator character. Default '—'. 2733 * @type string $prelabel Link text to display for the previous page link. 2734 * Default '« Previous Page'. 2735 * @type string $nxtlabel Link text to display for the next page link. 2736 * Default 'Next Page »'. 2737 * } 2738 * @return string The posts link navigation. 2739 */ 2740 function get_posts_nav_link( $args = array() ) { 2741 global $wp_query; 2742 2743 $return = ''; 2744 2745 if ( ! is_singular() ) { 2746 $defaults = array( 2747 'sep' => ' — ', 2748 'prelabel' => __( '« Previous Page' ), 2749 'nxtlabel' => __( 'Next Page »' ), 2750 ); 2751 $args = wp_parse_args( $args, $defaults ); 2752 2753 $max_num_pages = $wp_query->max_num_pages; 2754 $paged = get_query_var( 'paged' ); 2755 2756 // Only have sep if there's both prev and next results. 2757 if ( $paged < 2 || $paged >= $max_num_pages ) { 2758 $args['sep'] = ''; 2759 } 2760 2761 if ( $max_num_pages > 1 ) { 2762 $return = get_previous_posts_link( $args['prelabel'] ); 2763 $return .= preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $args['sep'] ); 2764 $return .= get_next_posts_link( $args['nxtlabel'] ); 2765 } 2766 } 2767 return $return; 2768 } 2769 2770 /** 2771 * Displays the post pages link navigation for previous and next pages. 2772 * 2773 * @since 0.71 2774 * 2775 * @param string $sep Optional. Separator for posts navigation links. Default empty. 2776 * @param string $prelabel Optional. Label for previous pages. Default empty. 2777 * @param string $nxtlabel Optional Label for next pages. Default empty. 2778 */ 2779 function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) { 2780 $args = array_filter( compact( 'sep', 'prelabel', 'nxtlabel' ) ); 2781 echo get_posts_nav_link( $args ); 2782 } 2783 2784 /** 2785 * Retrieves the navigation to next/previous post, when applicable. 2786 * 2787 * @since 4.1.0 2788 * @since 4.4.0 Introduced the `in_same_term`, `excluded_terms`, and `taxonomy` arguments. 2789 * @since 5.3.0 Added the `aria_label` parameter. 2790 * @since 5.5.0 Added the `class` parameter. 2791 * 2792 * @param array $args { 2793 * Optional. Default post navigation arguments. Default empty array. 2794 * 2795 * @type string $prev_text Anchor text to display in the previous post link. 2796 * Default '%title'. 2797 * @type string $next_text Anchor text to display in the next post link. 2798 * Default '%title'. 2799 * @type bool $in_same_term Whether link should be in the same taxonomy term. 2800 * Default false. 2801 * @type int[]|string $excluded_terms Array or comma-separated list of excluded term IDs. 2802 * Default empty. 2803 * @type string $taxonomy Taxonomy, if `$in_same_term` is true. Default 'category'. 2804 * @type string $screen_reader_text Screen reader text for the nav element. 2805 * Default 'Post navigation'. 2806 * @type string $aria_label ARIA label text for the nav element. Default 'Posts'. 2807 * @type string $class Custom class for the nav element. Default 'post-navigation'. 2808 * } 2809 * @return string Markup for post links. 2810 */ 2811 function get_the_post_navigation( $args = array() ) { 2812 // Make sure the nav element has an aria-label attribute: fallback to the screen reader text. 2813 if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) { 2814 $args['aria_label'] = $args['screen_reader_text']; 2815 } 2816 2817 $args = wp_parse_args( 2818 $args, 2819 array( 2820 'prev_text' => '%title', 2821 'next_text' => '%title', 2822 'in_same_term' => false, 2823 'excluded_terms' => '', 2824 'taxonomy' => 'category', 2825 'screen_reader_text' => __( 'Post navigation' ), 2826 'aria_label' => __( 'Posts' ), 2827 'class' => 'post-navigation', 2828 ) 2829 ); 2830 2831 $navigation = ''; 2832 2833 $previous = get_previous_post_link( 2834 '<div class="nav-previous">%link</div>', 2835 $args['prev_text'], 2836 $args['in_same_term'], 2837 $args['excluded_terms'], 2838 $args['taxonomy'] 2839 ); 2840 2841 $next = get_next_post_link( 2842 '<div class="nav-next">%link</div>', 2843 $args['next_text'], 2844 $args['in_same_term'], 2845 $args['excluded_terms'], 2846 $args['taxonomy'] 2847 ); 2848 2849 // Only add markup if there's somewhere to navigate to. 2850 if ( $previous || $next ) { 2851 $navigation = _navigation_markup( $previous . $next, $args['class'], $args['screen_reader_text'], $args['aria_label'] ); 2852 } 2853 2854 return $navigation; 2855 } 2856 2857 /** 2858 * Displays the navigation to next/previous post, when applicable. 2859 * 2860 * @since 4.1.0 2861 * 2862 * @param array $args Optional. See get_the_post_navigation() for available arguments. 2863 * Default empty array. 2864 */ 2865 function the_post_navigation( $args = array() ) { 2866 echo get_the_post_navigation( $args ); 2867 } 2868 2869 /** 2870 * Returns the navigation to next/previous set of posts, when applicable. 2871 * 2872 * @since 4.1.0 2873 * @since 5.3.0 Added the `aria_label` parameter. 2874 * @since 5.5.0 Added the `class` parameter. 2875 * 2876 * @global WP_Query $wp_query WordPress Query object. 2877 * 2878 * @param array $args { 2879 * Optional. Default posts navigation arguments. Default empty array. 2880 * 2881 * @type string $prev_text Anchor text to display in the previous posts link. 2882 * Default 'Older posts'. 2883 * @type string $next_text Anchor text to display in the next posts link. 2884 * Default 'Newer posts'. 2885 * @type string $screen_reader_text Screen reader text for the nav element. 2886 * Default 'Posts navigation'. 2887 * @type string $aria_label ARIA label text for the nav element. Default 'Posts'. 2888 * @type string $class Custom class for the nav element. Default 'posts-navigation'. 2889 * } 2890 * @return string Markup for posts links. 2891 */ 2892 function get_the_posts_navigation( $args = array() ) { 2893 global $wp_query; 2894 2895 $navigation = ''; 2896 2897 // Don't print empty markup if there's only one page. 2898 if ( $wp_query->max_num_pages > 1 ) { 2899 // Make sure the nav element has an aria-label attribute: fallback to the screen reader text. 2900 if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) { 2901 $args['aria_label'] = $args['screen_reader_text']; 2902 } 2903 2904 $args = wp_parse_args( 2905 $args, 2906 array( 2907 'prev_text' => __( 'Older posts' ), 2908 'next_text' => __( 'Newer posts' ), 2909 'screen_reader_text' => __( 'Posts navigation' ), 2910 'aria_label' => __( 'Posts' ), 2911 'class' => 'posts-navigation', 2912 ) 2913 ); 2914 2915 $next_link = get_previous_posts_link( $args['next_text'] ); 2916 $prev_link = get_next_posts_link( $args['prev_text'] ); 2917 2918 if ( $prev_link ) { 2919 $navigation .= '<div class="nav-previous">' . $prev_link . '</div>'; 2920 } 2921 2922 if ( $next_link ) { 2923 $navigation .= '<div class="nav-next">' . $next_link . '</div>'; 2924 } 2925 2926 $navigation = _navigation_markup( $navigation, $args['class'], $args['screen_reader_text'], $args['aria_label'] ); 2927 } 2928 2929 return $navigation; 2930 } 2931 2932 /** 2933 * Displays the navigation to next/previous set of posts, when applicable. 2934 * 2935 * @since 4.1.0 2936 * 2937 * @param array $args Optional. See get_the_posts_navigation() for available arguments. 2938 * Default empty array. 2939 */ 2940 function the_posts_navigation( $args = array() ) { 2941 echo get_the_posts_navigation( $args ); 2942 } 2943 2944 /** 2945 * Retrieves a paginated navigation to next/previous set of posts, when applicable. 2946 * 2947 * @since 4.1.0 2948 * @since 5.3.0 Added the `aria_label` parameter. 2949 * @since 5.5.0 Added the `class` parameter. 2950 * 2951 * @global WP_Query $wp_query WordPress Query object. 2952 * 2953 * @param array $args { 2954 * Optional. Default pagination arguments, see paginate_links(). 2955 * 2956 * @type string $screen_reader_text Screen reader text for navigation element. 2957 * Default 'Posts pagination'. 2958 * @type string $aria_label ARIA label text for the nav element. Default 'Posts pagination'. 2959 * @type string $class Custom class for the nav element. Default 'pagination'. 2960 * } 2961 * @return string Markup for pagination links. 2962 */ 2963 function get_the_posts_pagination( $args = array() ) { 2964 global $wp_query; 2965 2966 $navigation = ''; 2967 2968 // Don't print empty markup if there's only one page. 2969 if ( $wp_query->max_num_pages > 1 ) { 2970 // Make sure the nav element has an aria-label attribute: fallback to the screen reader text. 2971 if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) { 2972 $args['aria_label'] = $args['screen_reader_text']; 2973 } 2974 2975 $args = wp_parse_args( 2976 $args, 2977 array( 2978 'mid_size' => 1, 2979 'prev_text' => _x( 'Previous', 'previous set of posts' ), 2980 'next_text' => _x( 'Next', 'next set of posts' ), 2981 'screen_reader_text' => __( 'Posts pagination' ), 2982 'aria_label' => __( 'Posts pagination' ), 2983 'class' => 'pagination', 2984 ) 2985 ); 2986 2987 /** 2988 * Filters the arguments for posts pagination links. 2989 * 2990 * @since 6.1.0 2991 * 2992 * @param array $args { 2993 * Optional. Default pagination arguments, see paginate_links(). 2994 * 2995 * @type string $screen_reader_text Screen reader text for navigation element. 2996 * Default 'Posts navigation'. 2997 * @type string $aria_label ARIA label text for the nav element. Default 'Posts'. 2998 * @type string $class Custom class for the nav element. Default 'pagination'. 2999 * } 3000 */ 3001 $args = apply_filters( 'the_posts_pagination_args', $args ); 3002 3003 // Make sure we get a string back. Plain is the next best thing. 3004 if ( isset( $args['type'] ) && 'array' === $args['type'] ) { 3005 $args['type'] = 'plain'; 3006 } 3007 3008 // Set up paginated links. 3009 $links = paginate_links( $args ); 3010 3011 if ( $links ) { 3012 $navigation = _navigation_markup( $links, $args['class'], $args['screen_reader_text'], $args['aria_label'] ); 3013 } 3014 } 3015 3016 return $navigation; 3017 } 3018 3019 /** 3020 * Displays a paginated navigation to next/previous set of posts, when applicable. 3021 * 3022 * @since 4.1.0 3023 * 3024 * @param array $args Optional. See get_the_posts_pagination() for available arguments. 3025 * Default empty array. 3026 */ 3027 function the_posts_pagination( $args = array() ) { 3028 echo get_the_posts_pagination( $args ); 3029 } 3030 3031 /** 3032 * Wraps passed links in navigational markup. 3033 * 3034 * @since 4.1.0 3035 * @since 5.3.0 Added the `aria_label` parameter. 3036 * @access private 3037 * 3038 * @param string $links Navigational links. 3039 * @param string $css_class Optional. Custom class for the nav element. 3040 * Default 'posts-navigation'. 3041 * @param string $screen_reader_text Optional. Screen reader text for the nav element. 3042 * Default 'Posts navigation'. 3043 * @param string $aria_label Optional. ARIA label for the nav element. 3044 * Defaults to the value of `$screen_reader_text`. 3045 * @return string Navigation template tag. 3046 */ 3047 function _navigation_markup( $links, $css_class = 'posts-navigation', $screen_reader_text = '', $aria_label = '' ) { 3048 if ( empty( $screen_reader_text ) ) { 3049 $screen_reader_text = /* translators: Hidden accessibility text. */ __( 'Posts navigation' ); 3050 } 3051 if ( empty( $aria_label ) ) { 3052 $aria_label = $screen_reader_text; 3053 } 3054 3055 $template = ' 3056 <nav class="navigation %1$s" aria-label="%4$s"> 3057 <h2 class="screen-reader-text">%2$s</h2> 3058 <div class="nav-links">%3$s</div> 3059 </nav>'; 3060 3061 /** 3062 * Filters the navigation markup template. 3063 * 3064 * Note: The filtered template HTML must contain specifiers for the navigation 3065 * class (%1$s), the screen-reader-text value (%2$s), placement of the navigation 3066 * links (%3$s), and ARIA label text if screen-reader-text does not fit that (%4$s): 3067 * 3068 * <nav class="navigation %1$s" aria-label="%4$s"> 3069 * <h2 class="screen-reader-text">%2$s</h2> 3070 * <div class="nav-links">%3$s</div> 3071 * </nav> 3072 * 3073 * @since 4.4.0 3074 * 3075 * @param string $template The default template. 3076 * @param string $css_class The class passed by the calling function. 3077 */ 3078 $template = apply_filters( 'navigation_markup_template', $template, $css_class ); 3079 3080 return sprintf( $template, sanitize_html_class( $css_class ), esc_html( $screen_reader_text ), $links, esc_attr( $aria_label ) ); 3081 } 3082 3083 /** 3084 * Retrieves the comments page number link. 3085 * 3086 * @since 2.7.0 3087 * 3088 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 3089 * 3090 * @param int $pagenum Optional. Page number. Default 1. 3091 * @param int $max_page Optional. The maximum number of comment pages. Default 0. 3092 * @return string The comments page number link URL. 3093 */ 3094 function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) { 3095 global $wp_rewrite; 3096 3097 $pagenum = (int) $pagenum; 3098 $max_page = (int) $max_page; 3099 3100 $result = get_permalink(); 3101 3102 if ( 'newest' === get_option( 'default_comments_page' ) ) { 3103 if ( $pagenum !== $max_page ) { 3104 if ( $wp_rewrite->using_permalinks() ) { 3105 $result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' ); 3106 } else { 3107 $result = add_query_arg( 'cpage', $pagenum, $result ); 3108 } 3109 } 3110 } elseif ( $pagenum > 1 ) { 3111 if ( $wp_rewrite->using_permalinks() ) { 3112 $result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' ); 3113 } else { 3114 $result = add_query_arg( 'cpage', $pagenum, $result ); 3115 } 3116 } 3117 3118 $result .= '#comments'; 3119 3120 /** 3121 * Filters the comments page number link for the current request. 3122 * 3123 * @since 2.7.0 3124 * 3125 * @param string $result The comments page number link. 3126 */ 3127 return apply_filters( 'get_comments_pagenum_link', $result ); 3128 } 3129 3130 /** 3131 * Retrieves the link to the next comments page. 3132 * 3133 * @since 2.7.1 3134 * @since 6.7.0 Added the `page` parameter. 3135 * 3136 * @global WP_Query $wp_query WordPress Query object. 3137 * 3138 * @param string $label Optional. Label for link text. Default empty. 3139 * @param int $max_page Optional. Max page. Default 0. 3140 * @param int|null $page Optional. Page number. Default null. 3141 * @return string|null HTML-formatted link for the next page of comments. 3142 */ 3143 function get_next_comments_link( $label = '', $max_page = 0, $page = null ) { 3144 global $wp_query; 3145 3146 if ( ! is_singular() ) { 3147 return null; 3148 } 3149 3150 if ( is_null( $page ) ) { 3151 $page = get_query_var( 'cpage' ); 3152 } 3153 3154 if ( ! $page ) { 3155 $page = 1; 3156 } 3157 3158 $next_page = (int) $page + 1; 3159 3160 if ( empty( $max_page ) ) { 3161 $max_page = $wp_query->max_num_comment_pages; 3162 } 3163 3164 if ( empty( $max_page ) ) { 3165 $max_page = get_comment_pages_count(); 3166 } 3167 3168 if ( $next_page > $max_page ) { 3169 return null; 3170 } 3171 3172 if ( empty( $label ) ) { 3173 $label = __( 'Newer Comments »' ); 3174 } 3175 3176 /** 3177 * Filters the anchor tag attributes for the next comments page link. 3178 * 3179 * @since 2.7.0 3180 * 3181 * @param string $attributes Attributes for the anchor tag. 3182 */ 3183 $attr = apply_filters( 'next_comments_link_attributes', '' ); 3184 3185 return sprintf( 3186 '<a href="%1$s" %2$s>%3$s</a>', 3187 esc_url( get_comments_pagenum_link( $next_page, $max_page ) ), 3188 $attr, 3189 preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) 3190 ); 3191 } 3192 3193 /** 3194 * Displays the link to the next comments page. 3195 * 3196 * @since 2.7.0 3197 * 3198 * @param string $label Optional. Label for link text. Default empty. 3199 * @param int $max_page Optional. Max page. Default 0. 3200 */ 3201 function next_comments_link( $label = '', $max_page = 0 ) { 3202 echo get_next_comments_link( $label, $max_page ); 3203 } 3204 3205 /** 3206 * Retrieves the link to the previous comments page. 3207 * 3208 * @since 2.7.1 3209 * @since 6.7.0 Added the `page` parameter. 3210 * 3211 * @param string $label Optional. Label for comments link text. Default empty. 3212 * @param int|null $page Optional. Page number. Default null. 3213 * @return string|null HTML-formatted link for the previous page of comments. 3214 */ 3215 function get_previous_comments_link( $label = '', $page = null ) { 3216 if ( ! is_singular() ) { 3217 return null; 3218 } 3219 3220 if ( is_null( $page ) ) { 3221 $page = get_query_var( 'cpage' ); 3222 } 3223 3224 if ( (int) $page <= 1 ) { 3225 return null; 3226 } 3227 3228 $previous_page = (int) $page - 1; 3229 3230 if ( empty( $label ) ) { 3231 $label = __( '« Older Comments' ); 3232 } 3233 3234 /** 3235 * Filters the anchor tag attributes for the previous comments page link. 3236 * 3237 * @since 2.7.0 3238 * 3239 * @param string $attributes Attributes for the anchor tag. 3240 */ 3241 $attr = apply_filters( 'previous_comments_link_attributes', '' ); 3242 3243 return sprintf( 3244 '<a href="%1$s" %2$s>%3$s</a>', 3245 esc_url( get_comments_pagenum_link( $previous_page ) ), 3246 $attr, 3247 preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) 3248 ); 3249 } 3250 3251 /** 3252 * Displays the link to the previous comments page. 3253 * 3254 * @since 2.7.0 3255 * 3256 * @param string $label Optional. Label for comments link text. Default empty. 3257 */ 3258 function previous_comments_link( $label = '' ) { 3259 echo get_previous_comments_link( $label ); 3260 } 3261 3262 /** 3263 * Displays or retrieves pagination links for the comments on the current post. 3264 * 3265 * @see paginate_links() 3266 * @since 2.7.0 3267 * 3268 * @global WP_Rewrite $wp_rewrite WordPress rewrite component. 3269 * 3270 * @param string|array $args Optional args. See paginate_links(). Default empty array. 3271 * @return string|string[]|null|void Markup for comment page links, or an array of them when 3272 * the 'type' argument is 'array'. Null if the query is not for 3273 * an existing single post of any post type. Nothing when 'echo' 3274 * is true and 'type' is not 'array'. 3275 * @phpstan-return ( 3276 * $args is array{ type: 'array', ... } 3277 * ? string[]|null 3278 * : ( $args is array{ echo: false|0|''|'0', ... } 3279 * ? string|null 3280 * : ( $args is ''|'0'|array ? void : string|string[]|null ) ) 3281 * ) 3282 */ 3283 function paginate_comments_links( $args = array() ) { 3284 global $wp_rewrite; 3285 3286 if ( ! is_singular() ) { 3287 return null; 3288 } 3289 3290 $page = get_query_var( 'cpage' ); 3291 if ( ! $page ) { 3292 $page = 1; 3293 } 3294 $max_page = get_comment_pages_count(); 3295 $defaults = array( 3296 'base' => add_query_arg( 'cpage', '%#%' ), 3297 'format' => '', 3298 'total' => $max_page, 3299 'current' => $page, 3300 'echo' => true, 3301 'type' => 'plain', 3302 'add_fragment' => '#comments', 3303 ); 3304 if ( $wp_rewrite->using_permalinks() ) { 3305 $defaults['base'] = user_trailingslashit( trailingslashit( get_permalink() ) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged' ); 3306 } 3307 3308 $args = wp_parse_args( $args, $defaults ); 3309 $page_links = paginate_links( $args ); 3310 3311 if ( $args['echo'] && 'array' !== $args['type'] ) { 3312 echo $page_links; 3313 } else { 3314 return $page_links; 3315 } 3316 } 3317 3318 /** 3319 * Retrieves navigation to next/previous set of comments, when applicable. 3320 * 3321 * @since 4.4.0 3322 * @since 5.3.0 Added the `aria_label` parameter. 3323 * @since 5.5.0 Added the `class` parameter. 3324 * 3325 * @param array $args { 3326 * Optional. Default comments navigation arguments. 3327 * 3328 * @type string $prev_text Anchor text to display in the previous comments link. 3329 * Default 'Older comments'. 3330 * @type string $next_text Anchor text to display in the next comments link. 3331 * Default 'Newer comments'. 3332 * @type string $screen_reader_text Screen reader text for the nav element. Default 'Comments navigation'. 3333 * @type string $aria_label ARIA label text for the nav element. Default 'Comments'. 3334 * @type string $class Custom class for the nav element. Default 'comment-navigation'. 3335 * } 3336 * @return string Markup for comments links. 3337 */ 3338 function get_the_comments_navigation( $args = array() ) { 3339 $navigation = ''; 3340 3341 // Are there comments to navigate through? 3342 if ( get_comment_pages_count() > 1 ) { 3343 // Make sure the nav element has an aria-label attribute: fallback to the screen reader text. 3344 if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) { 3345 $args['aria_label'] = $args['screen_reader_text']; 3346 } 3347 3348 $args = wp_parse_args( 3349 $args, 3350 array( 3351 'prev_text' => __( 'Older comments' ), 3352 'next_text' => __( 'Newer comments' ), 3353 'screen_reader_text' => __( 'Comments navigation' ), 3354 'aria_label' => __( 'Comments' ), 3355 'class' => 'comment-navigation', 3356 ) 3357 ); 3358 3359 $prev_link = get_previous_comments_link( $args['prev_text'] ); 3360 $next_link = get_next_comments_link( $args['next_text'] ); 3361 3362 if ( $prev_link ) { 3363 $navigation .= '<div class="nav-previous">' . $prev_link . '</div>'; 3364 } 3365 3366 if ( $next_link ) { 3367 $navigation .= '<div class="nav-next">' . $next_link . '</div>'; 3368 } 3369 3370 $navigation = _navigation_markup( $navigation, $args['class'], $args['screen_reader_text'], $args['aria_label'] ); 3371 } 3372 3373 return $navigation; 3374 } 3375 3376 /** 3377 * Displays navigation to next/previous set of comments, when applicable. 3378 * 3379 * @since 4.4.0 3380 * 3381 * @param array $args See get_the_comments_navigation() for available arguments. Default empty array. 3382 */ 3383 function the_comments_navigation( $args = array() ) { 3384 echo get_the_comments_navigation( $args ); 3385 } 3386 3387 /** 3388 * Retrieves a paginated navigation to next/previous set of comments, when applicable. 3389 * 3390 * @since 4.4.0 3391 * @since 5.3.0 Added the `aria_label` parameter. 3392 * @since 5.5.0 Added the `class` parameter. 3393 * 3394 * @see paginate_comments_links() 3395 * 3396 * @param array $args { 3397 * Optional. Default pagination arguments. 3398 * 3399 * @type string $screen_reader_text Screen reader text for the nav element. Default 'Comments pagination'. 3400 * @type string $aria_label ARIA label text for the nav element. Default 'Comments pagination'. 3401 * @type string $class Custom class for the nav element. Default 'comments-pagination'. 3402 * } 3403 * @return string Markup for pagination links. 3404 */ 3405 function get_the_comments_pagination( $args = array() ) { 3406 $navigation = ''; 3407 3408 // Make sure the nav element has an aria-label attribute: fallback to the screen reader text. 3409 if ( ! empty( $args['screen_reader_text'] ) && empty( $args['aria_label'] ) ) { 3410 $args['aria_label'] = $args['screen_reader_text']; 3411 } 3412 3413 $args = wp_parse_args( 3414 $args, 3415 array( 3416 'screen_reader_text' => __( 'Comments pagination' ), 3417 'aria_label' => __( 'Comments pagination' ), 3418 'class' => 'comments-pagination', 3419 ) 3420 ); 3421 $args['echo'] = false; 3422 3423 // Make sure we get a string back. Plain is the next best thing. 3424 if ( isset( $args['type'] ) && 'array' === $args['type'] ) { 3425 $args['type'] = 'plain'; 3426 } 3427 3428 $links = paginate_comments_links( $args ); 3429 3430 if ( $links ) { 3431 $navigation = _navigation_markup( $links, $args['class'], $args['screen_reader_text'], $args['aria_label'] ); 3432 } 3433 3434 return $navigation; 3435 } 3436 3437 /** 3438 * Displays a paginated navigation to next/previous set of comments, when applicable. 3439 * 3440 * @since 4.4.0 3441 * 3442 * @param array $args See get_the_comments_pagination() for available arguments. Default empty array. 3443 */ 3444 function the_comments_pagination( $args = array() ) { 3445 echo get_the_comments_pagination( $args ); 3446 } 3447 3448 /** 3449 * Retrieves the URL for the current site where the front end is accessible. 3450 * 3451 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https' 3452 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option. 3453 * If `$scheme` is 'http' or 'https', is_ssl() is overridden. 3454 * 3455 * @since 3.0.0 3456 * 3457 * @param string $path Optional. Path relative to the home URL. Default empty. 3458 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts 3459 * 'http', 'https', 'relative', 'rest', or null. Default null. 3460 * @return string Home URL link with optional path appended. 3461 */ 3462 function home_url( $path = '', $scheme = null ) { 3463 return get_home_url( null, $path, $scheme ); 3464 } 3465 3466 /** 3467 * Retrieves the URL for a given site where the front end is accessible. 3468 * 3469 * Returns the 'home' option with the appropriate protocol. The protocol will be 'https' 3470 * if is_ssl() evaluates to true; otherwise, it will be the same as the 'home' option. 3471 * If `$scheme` is 'http' or 'https', is_ssl() is overridden. 3472 * 3473 * @since 3.0.0 3474 * 3475 * @param int|null $blog_id Optional. Site ID. Default null (current site). 3476 * @param string $path Optional. Path relative to the home URL. Default empty. 3477 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts 3478 * 'http', 'https', 'relative', 'rest', or null. Default null. 3479 * @return string Home URL link with optional path appended. 3480 */ 3481 function get_home_url( $blog_id = null, $path = '', $scheme = null ) { 3482 $orig_scheme = $scheme; 3483 3484 if ( empty( $blog_id ) || ! is_multisite() ) { 3485 $url = get_option( 'home' ); 3486 } else { 3487 switch_to_blog( $blog_id ); 3488 $url = get_option( 'home' ); 3489 restore_current_blog(); 3490 } 3491 3492 if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ), true ) ) { 3493 if ( is_ssl() ) { 3494 $scheme = 'https'; 3495 } else { 3496 $scheme = parse_url( $url, PHP_URL_SCHEME ); 3497 } 3498 } 3499 3500 $url = set_url_scheme( $url, $scheme ); 3501 3502 if ( $path && is_string( $path ) ) { 3503 $url .= '/' . ltrim( $path, '/' ); 3504 } 3505 3506 /** 3507 * Filters the home URL. 3508 * 3509 * @since 3.0.0 3510 * 3511 * @param string $url The complete home URL including scheme and path. 3512 * @param string $path Path relative to the home URL. Blank string if no path is specified. 3513 * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https', 3514 * 'relative', 'rest', or null. 3515 * @param int|null $blog_id Site ID, or null for the current site. 3516 */ 3517 return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id ); 3518 } 3519 3520 /** 3521 * Retrieves the URL for the current site where WordPress application files 3522 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible. 3523 * 3524 * Returns the 'site_url' option with the appropriate protocol, 'https' if 3525 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is 3526 * overridden. 3527 * 3528 * @since 3.0.0 3529 * 3530 * @param string $path Optional. Path relative to the site URL. Default empty. 3531 * @param string|null $scheme Optional. Scheme to give the site URL context. See set_url_scheme(). 3532 * @return string Site URL link with optional path appended. 3533 */ 3534 function site_url( $path = '', $scheme = null ) { 3535 return get_site_url( null, $path, $scheme ); 3536 } 3537 3538 /** 3539 * Retrieves the URL for a given site where WordPress application files 3540 * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible. 3541 * 3542 * Returns the 'site_url' option with the appropriate protocol, 'https' if 3543 * is_ssl() and 'http' otherwise. If `$scheme` is 'http' or 'https', 3544 * `is_ssl()` is overridden. 3545 * 3546 * @since 3.0.0 3547 * 3548 * @param int|null $blog_id Optional. Site ID. Default null (current site). 3549 * @param string $path Optional. Path relative to the site URL. Default empty. 3550 * @param string|null $scheme Optional. Scheme to give the site URL context. Accepts 3551 * 'http', 'https', 'login', 'login_post', 'admin', or 3552 * 'relative'. Default null. 3553 * @return string Site URL link with optional path appended. 3554 */ 3555 function get_site_url( $blog_id = null, $path = '', $scheme = null ) { 3556 if ( empty( $blog_id ) || ! is_multisite() ) { 3557 $url = get_option( 'siteurl' ); 3558 } else { 3559 switch_to_blog( $blog_id ); 3560 $url = get_option( 'siteurl' ); 3561 restore_current_blog(); 3562 } 3563 3564 $url = set_url_scheme( $url, $scheme ); 3565 3566 if ( $path && is_string( $path ) ) { 3567 $url .= '/' . ltrim( $path, '/' ); 3568 } 3569 3570 /** 3571 * Filters the site URL. 3572 * 3573 * @since 2.7.0 3574 * 3575 * @param string $url The complete site URL including scheme and path. 3576 * @param string $path Path relative to the site URL. Blank string if no path is specified. 3577 * @param string|null $scheme Scheme to give the site URL context. Accepts 'http', 'https', 'login', 3578 * 'login_post', 'admin', 'relative' or null. 3579 * @param int|null $blog_id Site ID, or null for the current site. 3580 */ 3581 return apply_filters( 'site_url', $url, $path, $scheme, $blog_id ); 3582 } 3583 3584 /** 3585 * Retrieves the URL to the admin area for the current site. 3586 * 3587 * @since 2.6.0 3588 * 3589 * @param string $path Optional. Path relative to the admin URL. Default empty. 3590 * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 3591 * 'http' or 'https' can be passed to force those schemes. 3592 * @return string Admin URL link with optional path appended. 3593 */ 3594 function admin_url( $path = '', $scheme = 'admin' ) { 3595 return get_admin_url( null, $path, $scheme ); 3596 } 3597 3598 /** 3599 * Retrieves the URL to the admin area for a given site. 3600 * 3601 * @since 3.0.0 3602 * 3603 * @param int|null $blog_id Optional. Site ID. Default null (current site). 3604 * @param string $path Optional. Path relative to the admin URL. Default empty. 3605 * @param string $scheme Optional. The scheme to use. Accepts 'http' or 'https', 3606 * to force those schemes. Default 'admin', which obeys 3607 * force_ssl_admin() and is_ssl(). 3608 * @return string Admin URL link with optional path appended. 3609 */ 3610 function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) { 3611 $url = get_site_url( $blog_id, 'wp-admin/', $scheme ); 3612 3613 if ( $path && is_string( $path ) ) { 3614 $url .= ltrim( $path, '/' ); 3615 } 3616 3617 /** 3618 * Filters the admin area URL. 3619 * 3620 * @since 2.8.0 3621 * @since 5.8.0 The `$scheme` parameter was added. 3622 * 3623 * @param string $url The complete admin area URL including scheme and path. 3624 * @param string $path Path relative to the admin area URL. Blank string if no path is specified. 3625 * @param int|null $blog_id Site ID, or null for the current site. 3626 * @param string|null $scheme The scheme to use. Accepts 'http', 'https', 3627 * 'admin', or null. Default 'admin', which obeys force_ssl_admin() and is_ssl(). 3628 */ 3629 return apply_filters( 'admin_url', $url, $path, $blog_id, $scheme ); 3630 } 3631 3632 /** 3633 * Retrieves the URL to the includes directory. 3634 * 3635 * @since 2.6.0 3636 * 3637 * @param string $path Optional. Path relative to the includes URL. Default empty. 3638 * @param string|null $scheme Optional. Scheme to give the includes URL context. Accepts 3639 * 'http', 'https', or 'relative'. Default null. 3640 * @return string Includes URL link with optional path appended. 3641 */ 3642 function includes_url( $path = '', $scheme = null ) { 3643 $url = site_url( '/' . WPINC . '/', $scheme ); 3644 3645 if ( $path && is_string( $path ) ) { 3646 $url .= ltrim( $path, '/' ); 3647 } 3648 3649 /** 3650 * Filters the URL to the includes directory. 3651 * 3652 * @since 2.8.0 3653 * @since 5.8.0 The `$scheme` parameter was added. 3654 * 3655 * @param string $url The complete URL to the includes directory including scheme and path. 3656 * @param string $path Path relative to the URL to the wp-includes directory. Blank string 3657 * if no path is specified. 3658 * @param string|null $scheme Scheme to give the includes URL context. Accepts 3659 * 'http', 'https', 'relative', or null. Default null. 3660 */ 3661 return apply_filters( 'includes_url', $url, $path, $scheme ); 3662 } 3663 3664 /** 3665 * Retrieves the URL to the content directory. 3666 * 3667 * @since 2.6.0 3668 * 3669 * @param string $path Optional. Path relative to the content URL. Default empty. 3670 * @return string Content URL link with optional path appended. 3671 */ 3672 function content_url( $path = '' ) { 3673 $url = set_url_scheme( WP_CONTENT_URL ); 3674 3675 if ( $path && is_string( $path ) ) { 3676 $url .= '/' . ltrim( $path, '/' ); 3677 } 3678 3679 /** 3680 * Filters the URL to the content directory. 3681 * 3682 * @since 2.8.0 3683 * 3684 * @param string $url The complete URL to the content directory including scheme and path. 3685 * @param string $path Path relative to the URL to the content directory. Blank string 3686 * if no path is specified. 3687 */ 3688 return apply_filters( 'content_url', $url, $path ); 3689 } 3690 3691 /** 3692 * Retrieves a URL within the plugins or mu-plugins directory. 3693 * 3694 * Defaults to the plugins directory URL if no arguments are supplied. 3695 * 3696 * @since 2.6.0 3697 * 3698 * @param string $path Optional. Extra path appended to the end of the URL, including 3699 * the relative directory if $plugin is supplied. Default empty. 3700 * @param string $plugin Optional. A full path to a file inside a plugin or mu-plugin. 3701 * The URL will be relative to its directory. Default empty. 3702 * Typically this is done by passing `__FILE__` as the argument. 3703 * @return string Plugins URL link with optional paths appended. 3704 */ 3705 function plugins_url( $path = '', $plugin = '' ) { 3706 3707 $path = wp_normalize_path( $path ); 3708 $plugin = wp_normalize_path( $plugin ); 3709 $mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR ); 3710 3711 if ( ! empty( $plugin ) && str_starts_with( $plugin, $mu_plugin_dir ) ) { 3712 $url = WPMU_PLUGIN_URL; 3713 } else { 3714 $url = WP_PLUGIN_URL; 3715 } 3716 3717 $url = set_url_scheme( $url ); 3718 3719 if ( ! empty( $plugin ) && is_string( $plugin ) ) { 3720 $folder = dirname( plugin_basename( $plugin ) ); 3721 if ( '.' !== $folder ) { 3722 $url .= '/' . ltrim( $folder, '/' ); 3723 } 3724 } 3725 3726 if ( $path && is_string( $path ) ) { 3727 $url .= '/' . ltrim( $path, '/' ); 3728 } 3729 3730 /** 3731 * Filters the URL to the plugins directory. 3732 * 3733 * @since 2.8.0 3734 * 3735 * @param string $url The complete URL to the plugins directory including scheme and path. 3736 * @param string $path Path relative to the URL to the plugins directory. Blank string 3737 * if no path is specified. 3738 * @param string $plugin The plugin file path to be relative to. Blank string if no plugin 3739 * is specified. 3740 */ 3741 return apply_filters( 'plugins_url', $url, $path, $plugin ); 3742 } 3743 3744 /** 3745 * Retrieves the site URL for the current network. 3746 * 3747 * Returns the site URL with the appropriate protocol, 'https' if 3748 * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is 3749 * overridden. 3750 * 3751 * @since 3.0.0 3752 * 3753 * @see set_url_scheme() 3754 * 3755 * @param string $path Optional. Path relative to the site URL. Default empty. 3756 * @param string|null $scheme Optional. Scheme to give the site URL context. Accepts 3757 * 'http', 'https', or 'relative'. Default null. 3758 * @return string Site URL link with optional path appended. 3759 */ 3760 function network_site_url( $path = '', $scheme = null ) { 3761 if ( ! is_multisite() ) { 3762 return site_url( $path, $scheme ); 3763 } 3764 3765 $current_network = get_network(); 3766 3767 if ( 'relative' === $scheme ) { 3768 $url = $current_network->path; 3769 } else { 3770 $url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme ); 3771 } 3772 3773 if ( $path && is_string( $path ) ) { 3774 $url .= ltrim( $path, '/' ); 3775 } 3776 3777 /** 3778 * Filters the network site URL. 3779 * 3780 * @since 3.0.0 3781 * 3782 * @param string $url The complete network site URL including scheme and path. 3783 * @param string $path Path relative to the network site URL. Blank string if 3784 * no path is specified. 3785 * @param string|null $scheme Scheme to give the URL context. Accepts 'http', 'https', 3786 * 'relative' or null. 3787 */ 3788 return apply_filters( 'network_site_url', $url, $path, $scheme ); 3789 } 3790 3791 /** 3792 * Retrieves the home URL for the current network. 3793 * 3794 * Returns the home URL with the appropriate protocol, 'https' is_ssl() 3795 * and 'http' otherwise. If `$scheme` is 'http' or 'https', `is_ssl()` is 3796 * overridden. 3797 * 3798 * @since 3.0.0 3799 * 3800 * @param string $path Optional. Path relative to the home URL. Default empty. 3801 * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts 3802 * 'http', 'https', or 'relative'. Default null. 3803 * @return string Home URL link with optional path appended. 3804 */ 3805 function network_home_url( $path = '', $scheme = null ) { 3806 if ( ! is_multisite() ) { 3807 return home_url( $path, $scheme ); 3808 } 3809 3810 $current_network = get_network(); 3811 $orig_scheme = $scheme; 3812 3813 if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ), true ) ) { 3814 $scheme = is_ssl() ? 'https' : 'http'; 3815 } 3816 3817 if ( 'relative' === $scheme ) { 3818 $url = $current_network->path; 3819 } else { 3820 $url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme ); 3821 } 3822 3823 if ( $path && is_string( $path ) ) { 3824 $url .= ltrim( $path, '/' ); 3825 } 3826 3827 /** 3828 * Filters the network home URL. 3829 * 3830 * @since 3.0.0 3831 * 3832 * @param string $url The complete network home URL including scheme and path. 3833 * @param string $path Path relative to the network home URL. Blank string 3834 * if no path is specified. 3835 * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https', 3836 * 'relative' or null. 3837 */ 3838 return apply_filters( 'network_home_url', $url, $path, $orig_scheme ); 3839 } 3840 3841 /** 3842 * Retrieves the URL to the admin area for the network. 3843 * 3844 * @since 3.0.0 3845 * 3846 * @param string $path Optional path relative to the admin URL. Default empty. 3847 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3848 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3849 * @return string Admin URL link with optional path appended. 3850 */ 3851 function network_admin_url( $path = '', $scheme = 'admin' ) { 3852 if ( ! is_multisite() ) { 3853 return admin_url( $path, $scheme ); 3854 } 3855 3856 $url = network_site_url( 'wp-admin/network/', $scheme ); 3857 3858 if ( $path && is_string( $path ) ) { 3859 $url .= ltrim( $path, '/' ); 3860 } 3861 3862 /** 3863 * Filters the network admin URL. 3864 * 3865 * @since 3.0.0 3866 * @since 5.8.0 The `$scheme` parameter was added. 3867 * 3868 * @param string $url The complete network admin URL including scheme and path. 3869 * @param string $path Path relative to the network admin URL. Blank string if 3870 * no path is specified. 3871 * @param string|null $scheme The scheme to use. Accepts 'http', 'https', 3872 * 'admin', or null. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 3873 */ 3874 return apply_filters( 'network_admin_url', $url, $path, $scheme ); 3875 } 3876 3877 /** 3878 * Retrieves the URL to the admin area for the current user. 3879 * 3880 * @since 3.0.0 3881 * 3882 * @param string $path Optional. Path relative to the admin URL. Default empty. 3883 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3884 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3885 * @return string Admin URL link with optional path appended. 3886 */ 3887 function user_admin_url( $path = '', $scheme = 'admin' ) { 3888 $url = network_site_url( 'wp-admin/user/', $scheme ); 3889 3890 if ( $path && is_string( $path ) ) { 3891 $url .= ltrim( $path, '/' ); 3892 } 3893 3894 /** 3895 * Filters the user admin URL for the current user. 3896 * 3897 * @since 3.1.0 3898 * @since 5.8.0 The `$scheme` parameter was added. 3899 * 3900 * @param string $url The complete URL including scheme and path. 3901 * @param string $path Path relative to the URL. Blank string if 3902 * no path is specified. 3903 * @param string|null $scheme The scheme to use. Accepts 'http', 'https', 3904 * 'admin', or null. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 3905 */ 3906 return apply_filters( 'user_admin_url', $url, $path, $scheme ); 3907 } 3908 3909 /** 3910 * Retrieves the URL to the admin area for either the current site or the network depending on context. 3911 * 3912 * @since 3.1.0 3913 * 3914 * @param string $path Optional. Path relative to the admin URL. Default empty. 3915 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 3916 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 3917 * @return string Admin URL link with optional path appended. 3918 */ 3919 function self_admin_url( $path = '', $scheme = 'admin' ) { 3920 if ( is_network_admin() ) { 3921 $url = network_admin_url( $path, $scheme ); 3922 } elseif ( is_user_admin() ) { 3923 $url = user_admin_url( $path, $scheme ); 3924 } else { 3925 $url = admin_url( $path, $scheme ); 3926 } 3927 3928 /** 3929 * Filters the admin URL for the current site or network depending on context. 3930 * 3931 * @since 4.9.0 3932 * 3933 * @param string $url The complete URL including scheme and path. 3934 * @param string $path Path relative to the URL. Blank string if no path is specified. 3935 * @param string $scheme The scheme to use. 3936 */ 3937 return apply_filters( 'self_admin_url', $url, $path, $scheme ); 3938 } 3939 3940 /** 3941 * Sets the scheme for a URL. 3942 * 3943 * @since 3.4.0 3944 * @since 4.4.0 The 'rest' scheme was added. 3945 * 3946 * @param string $url Absolute URL that includes a scheme 3947 * @param string|null $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login', 3948 * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null. Default null. 3949 * @return string URL with chosen scheme. 3950 */ 3951 function set_url_scheme( $url, $scheme = null ) { 3952 $orig_scheme = $scheme; 3953 3954 if ( ! $scheme ) { 3955 $scheme = is_ssl() ? 'https' : 'http'; 3956 } elseif ( 'admin' === $scheme || 'login' === $scheme || 'login_post' === $scheme || 'rpc' === $scheme ) { 3957 $scheme = is_ssl() || force_ssl_admin() ? 'https' : 'http'; 3958 } elseif ( 'http' !== $scheme && 'https' !== $scheme && 'relative' !== $scheme ) { 3959 $scheme = is_ssl() ? 'https' : 'http'; 3960 } 3961 3962 $url = trim( $url ); 3963 if ( str_starts_with( $url, '//' ) ) { 3964 $url = 'http:' . $url; 3965 } 3966 3967 if ( 'relative' === $scheme ) { 3968 $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) ); 3969 if ( '' !== $url && '/' === $url[0] ) { 3970 $url = '/' . ltrim( $url, "/ \t\n\r\0\x0B" ); 3971 } 3972 } else { 3973 $url = preg_replace( '#^\w+://#', $scheme . '://', $url ); 3974 } 3975 3976 /** 3977 * Filters the resulting URL after setting the scheme. 3978 * 3979 * @since 3.4.0 3980 * 3981 * @param string $url The complete URL including scheme and path. 3982 * @param string $scheme Scheme applied to the URL. One of 'http', 'https', or 'relative'. 3983 * @param string|null $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login', 3984 * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null. 3985 */ 3986 return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme ); 3987 } 3988 3989 /** 3990 * Retrieves the URL to the user's dashboard. 3991 * 3992 * If a user does not belong to any site, the global user dashboard is used. If the user 3993 * belongs to the current site, the dashboard for the current site is returned. If the user 3994 * cannot edit the current site, the dashboard to the user's primary site is returned. 3995 * 3996 * @since 3.1.0 3997 * 3998 * @param int $user_id Optional. User ID. Defaults to current user. 3999 * @param string $path Optional path relative to the dashboard. Use only paths known to 4000 * both site and user admins. Default empty. 4001 * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() 4002 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 4003 * @return string Dashboard URL link with optional path appended. 4004 */ 4005 function get_dashboard_url( $user_id = 0, $path = '', $scheme = 'admin' ) { 4006 $user_id = $user_id ? (int) $user_id : get_current_user_id(); 4007 4008 $blogs = get_blogs_of_user( $user_id ); 4009 4010 if ( is_multisite() && ! user_can( $user_id, 'manage_network' ) && empty( $blogs ) ) { 4011 $url = user_admin_url( $path, $scheme ); 4012 } elseif ( ! is_multisite() ) { 4013 $url = admin_url( $path, $scheme ); 4014 } else { 4015 $current_blog = get_current_blog_id(); 4016 4017 if ( $current_blog && ( user_can( $user_id, 'manage_network' ) || isset( $blogs[ $current_blog ] ) ) ) { 4018 $url = admin_url( $path, $scheme ); 4019 } else { 4020 $active = get_active_blog_for_user( $user_id ); 4021 if ( $active ) { 4022 $url = get_admin_url( $active->blog_id, $path, $scheme ); 4023 } else { 4024 $url = user_admin_url( $path, $scheme ); 4025 } 4026 } 4027 } 4028 4029 /** 4030 * Filters the dashboard URL for a user. 4031 * 4032 * @since 3.1.0 4033 * 4034 * @param string $url The complete URL including scheme and path. 4035 * @param int $user_id The user ID. 4036 * @param string $path Path relative to the URL. Blank string if no path is specified. 4037 * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', 4038 * 'login_post', 'admin', 'relative' or null. 4039 */ 4040 return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme ); 4041 } 4042 4043 /** 4044 * Retrieves the URL to the user's profile editor. 4045 * 4046 * @since 3.1.0 4047 * 4048 * @param int $user_id Optional. User ID. Defaults to current user. 4049 * @param string $scheme Optional. The scheme to use. Default is 'admin', which obeys force_ssl_admin() 4050 * and is_ssl(). 'http' or 'https' can be passed to force those schemes. 4051 * @return string Dashboard URL link with optional path appended. 4052 */ 4053 function get_edit_profile_url( $user_id = 0, $scheme = 'admin' ) { 4054 $user_id = $user_id ? (int) $user_id : get_current_user_id(); 4055 4056 if ( is_user_admin() ) { 4057 $url = user_admin_url( 'profile.php', $scheme ); 4058 } elseif ( is_network_admin() ) { 4059 $url = network_admin_url( 'profile.php', $scheme ); 4060 } else { 4061 $url = get_dashboard_url( $user_id, 'profile.php', $scheme ); 4062 } 4063 4064 /** 4065 * Filters the URL for a user's profile editor. 4066 * 4067 * @since 3.1.0 4068 * 4069 * @param string $url The complete URL including scheme and path. 4070 * @param int $user_id The user ID. 4071 * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', 4072 * 'login_post', 'admin', 'relative' or null. 4073 */ 4074 return apply_filters( 'edit_profile_url', $url, $user_id, $scheme ); 4075 } 4076 4077 /** 4078 * Returns the canonical URL for a post. 4079 * 4080 * When the post is the same as the current requested page the function will handle the 4081 * pagination arguments too. 4082 * 4083 * @since 4.6.0 4084 * 4085 * @param int|WP_Post $post Optional. Post ID or object. Default is global `$post`. 4086 * @return string|false The canonical URL. False if the post does not exist 4087 * or has not been published yet. 4088 */ 4089 function wp_get_canonical_url( $post = null ) { 4090 $post = get_post( $post ); 4091 4092 if ( ! $post ) { 4093 return false; 4094 } 4095 4096 if ( 'publish' !== get_post_status( $post ) ) { 4097 return false; 4098 } 4099 4100 $canonical_url = get_permalink( $post ); 4101 4102 // If a canonical is being generated for the current page, make sure it has pagination if needed. 4103 if ( get_queried_object_id() === $post->ID ) { 4104 $page = get_query_var( 'page', 0 ); 4105 if ( $page >= 2 ) { 4106 if ( ! get_option( 'permalink_structure' ) ) { 4107 $canonical_url = add_query_arg( 'page', $page, $canonical_url ); 4108 } else { 4109 $canonical_url = trailingslashit( $canonical_url ) . user_trailingslashit( $page, 'single_paged' ); 4110 } 4111 } 4112 4113 $cpage = get_query_var( 'cpage', 0 ); 4114 if ( $cpage ) { 4115 $canonical_url = get_comments_pagenum_link( $cpage ); 4116 } 4117 } 4118 4119 /** 4120 * Filters the canonical URL for a post. 4121 * 4122 * @since 4.6.0 4123 * 4124 * @param string $canonical_url The post's canonical URL. 4125 * @param WP_Post $post Post object. 4126 */ 4127 return apply_filters( 'get_canonical_url', $canonical_url, $post ); 4128 } 4129 4130 /** 4131 * Outputs rel=canonical for singular queries. 4132 * 4133 * @since 2.9.0 4134 * @since 4.6.0 Adjusted to use `wp_get_canonical_url()`. 4135 */ 4136 function rel_canonical() { 4137 if ( ! is_singular() ) { 4138 return; 4139 } 4140 4141 $id = get_queried_object_id(); 4142 4143 if ( 0 === $id ) { 4144 return; 4145 } 4146 4147 $url = wp_get_canonical_url( $id ); 4148 4149 if ( ! empty( $url ) ) { 4150 echo '<link rel="canonical" href="' . esc_url( $url ) . '" />' . "\n"; 4151 } 4152 } 4153 4154 /** 4155 * Returns a shortlink for a post, page, attachment, or site. 4156 * 4157 * This function exists to provide a shortlink tag that all themes and plugins can target. 4158 * A plugin must hook in to provide the actual shortlinks. Default shortlink support is 4159 * limited to providing ?p= style links for posts. Plugins can short-circuit this function 4160 * via the {@see 'pre_get_shortlink'} filter or filter the output via the {@see 'get_shortlink'} 4161 * filter. 4162 * 4163 * @since 3.0.0 4164 * 4165 * @param int $id Optional. A post or site ID. Default is 0, which means the current post or site. 4166 * @param string $context Optional. Whether the ID is a 'site' ID, 'post' ID, or 'media' ID. If 'post', 4167 * the post_type of the post is consulted. If 'query', the current query is consulted 4168 * to determine the ID and context. Default 'post'. 4169 * @param bool $allow_slugs Optional. Whether to allow post slugs in the shortlink. It is up to the plugin how 4170 * and whether to honor this. Default true. 4171 * @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks 4172 * are not enabled. 4173 */ 4174 function wp_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) { 4175 /** 4176 * Filters whether to preempt generating a shortlink for the given post. 4177 * 4178 * Returning a value other than false from the filter will short-circuit 4179 * the shortlink generation process, returning that value instead. 4180 * 4181 * @since 3.0.0 4182 * 4183 * @param false|string $return Short-circuit return value. Either false or a URL string. 4184 * @param int $id Post ID, or 0 for the current post. 4185 * @param string $context The context for the link. One of 'post' or 'query', 4186 * @param bool $allow_slugs Whether to allow post slugs in the shortlink. 4187 */ 4188 $shortlink = apply_filters( 'pre_get_shortlink', false, $id, $context, $allow_slugs ); 4189 4190 if ( false !== $shortlink ) { 4191 return $shortlink; 4192 } 4193 4194 $post_id = 0; 4195 if ( 'query' === $context && is_singular() ) { 4196 $post_id = get_queried_object_id(); 4197 $post = get_post( $post_id ); 4198 } elseif ( 'post' === $context ) { 4199 $post = get_post( $id ); 4200 if ( ! empty( $post->ID ) ) { 4201 $post_id = $post->ID; 4202 } 4203 } 4204 4205 $shortlink = ''; 4206 4207 // Return `?p=` link for all public post types. 4208 if ( ! empty( $post_id ) ) { 4209 $post_type = get_post_type_object( $post->post_type ); 4210 4211 if ( 'page' === $post->post_type 4212 && 'page' === get_option( 'show_on_front' ) && (int) get_option( 'page_on_front' ) === $post->ID 4213 ) { 4214 $shortlink = home_url( '/' ); 4215 } elseif ( $post_type && $post_type->public ) { 4216 $shortlink = home_url( '?p=' . $post_id ); 4217 } 4218 } 4219 4220 /** 4221 * Filters the shortlink for a post. 4222 * 4223 * @since 3.0.0 4224 * 4225 * @param string $shortlink Shortlink URL. 4226 * @param int $id Post ID, or 0 for the current post. 4227 * @param string $context The context for the link. One of 'post' or 'query', 4228 * @param bool $allow_slugs Whether to allow post slugs in the shortlink. Not used by default. 4229 */ 4230 return apply_filters( 'get_shortlink', $shortlink, $id, $context, $allow_slugs ); 4231 } 4232 4233 /** 4234 * Injects rel=shortlink into the head if a shortlink is defined for the current page. 4235 * 4236 * Attached to the {@see 'wp_head'} action. 4237 * 4238 * @since 3.0.0 4239 */ 4240 function wp_shortlink_wp_head() { 4241 $shortlink = wp_get_shortlink( 0, 'query' ); 4242 4243 if ( empty( $shortlink ) ) { 4244 return; 4245 } 4246 4247 echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n"; 4248 } 4249 4250 /** 4251 * Sends a Link: rel=shortlink header if a shortlink is defined for the current page. 4252 * 4253 * Attached to the {@see 'wp'} action. 4254 * 4255 * @since 3.0.0 4256 */ 4257 function wp_shortlink_header() { 4258 if ( headers_sent() ) { 4259 return; 4260 } 4261 4262 $shortlink = wp_get_shortlink( 0, 'query' ); 4263 4264 if ( empty( $shortlink ) ) { 4265 return; 4266 } 4267 4268 header( 'Link: <' . $shortlink . '>; rel=shortlink', false ); 4269 } 4270 4271 /** 4272 * Displays the shortlink for a post. 4273 * 4274 * Must be called from inside "The Loop" 4275 * 4276 * Call like the_shortlink( __( 'Shortlinkage FTW' ) ) 4277 * 4278 * @since 3.0.0 4279 * @since 6.8.0 Removed title attribute. 4280 * 4281 * @param string $text Optional. The link text or HTML to be displayed. Defaults to 'This is the short link.' 4282 * @param string $title Unused. 4283 * @param string $before Optional. HTML to display before the link. Default empty. 4284 * @param string $after Optional. HTML to display after the link. Default empty. 4285 */ 4286 function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) { 4287 $post = get_post(); 4288 4289 if ( empty( $text ) ) { 4290 $text = __( 'This is the short link.' ); 4291 } 4292 4293 $shortlink = wp_get_shortlink( $post->ID ); 4294 4295 if ( ! empty( $shortlink ) ) { 4296 $link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '">' . $text . '</a>'; 4297 4298 /** 4299 * Filters the short link anchor tag for a post. 4300 * 4301 * @since 3.0.0 4302 * 4303 * @param string $link Shortlink anchor tag. 4304 * @param string $shortlink Shortlink URL. 4305 * @param string $text Shortlink's text. 4306 * @param string $title Shortlink's title attribute. Unused. 4307 */ 4308 $link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title ); 4309 echo $before, $link, $after; 4310 } 4311 } 4312 4313 /** 4314 * Retrieves the avatar URL. 4315 * 4316 * @since 4.2.0 4317 * 4318 * @param mixed $id_or_email The avatar to retrieve a URL for. Accepts a user ID, Gravatar SHA-256 or MD5 hash, 4319 * user email, WP_User object, WP_Post object, or WP_Comment object. 4320 * @param array $args { 4321 * Optional. Arguments to use instead of the default arguments. 4322 * 4323 * @type int $size Height and width of the avatar in pixels. Default 96. 4324 * @type string $default URL for the default image or a default type. Accepts: 4325 * - '404' (return a 404 instead of a default image) 4326 * - 'retro' (a 8-bit arcade-style pixelated face) 4327 * - 'robohash' (a robot) 4328 * - 'monsterid' (a monster) 4329 * - 'wavatar' (a cartoon face) 4330 * - 'identicon' (the "quilt", a geometric pattern) 4331 * - 'initials' (initials based avatar with background color) 4332 * - 'color' (generated background color) 4333 * - 'mystery', 'mm', or 'mysteryman' (The Oyster Man) 4334 * - 'blank' (transparent GIF) 4335 * - 'gravatar_default' (the Gravatar logo) 4336 * Default is the value of the 'avatar_default' option, 4337 * with a fallback of 'mystery'. 4338 * @type bool $force_default Whether to always show the default image, never the Gravatar. 4339 * Default false. 4340 * @type string $rating What rating to display avatars up to. Accepts: 4341 * - 'G' (suitable for all audiences) 4342 * - 'PG' (possibly offensive, usually for audiences 13 and above) 4343 * - 'R' (intended for adult audiences above 17) 4344 * - 'X' (even more mature than above) 4345 * Default is the value of the 'avatar_rating' option. 4346 * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values. 4347 * Default null. 4348 * @type array $processed_args When the function returns, the value will be the processed/sanitized $args 4349 * plus a "found_avatar" guess. Pass as a reference. Default null. 4350 * } 4351 * @return string|false The URL of the avatar on success, false on failure. 4352 */ 4353 function get_avatar_url( $id_or_email, $args = null ) { 4354 $args = get_avatar_data( $id_or_email, $args ); 4355 return $args['url']; 4356 } 4357 4358 /** 4359 * Check if this comment type allows avatars to be retrieved. 4360 * 4361 * @since 5.1.0 4362 * 4363 * @param string $comment_type Comment type to check. 4364 * @return bool Whether the comment type is allowed for retrieving avatars. 4365 */ 4366 function is_avatar_comment_type( $comment_type ) { 4367 /** 4368 * Filters the list of allowed comment types for retrieving avatars. 4369 * 4370 * @since 3.0.0 4371 * 4372 * @since 6.9.0 The 'note' comment type was added. 4373 * 4374 * @param array $types An array of content types. Default contains 'comment' and 'note'. 4375 */ 4376 $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment', 'note' ) ); 4377 4378 return in_array( $comment_type, (array) $allowed_comment_types, true ); 4379 } 4380 4381 /** 4382 * Retrieves default data about the avatar. 4383 * 4384 * @since 4.2.0 4385 * @since 6.7.0 Gravatar URLs always use HTTPS. 4386 * @since 6.8.0 Gravatar URLs use the SHA-256 hashing algorithm. 4387 * 4388 * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar SHA-256 or MD5 hash, 4389 * user email, WP_User object, WP_Post object, or WP_Comment object. 4390 * @param array $args { 4391 * Optional. Arguments to use instead of the default arguments. 4392 * 4393 * @type int $size Height and width of the avatar in pixels. Default 96. 4394 * @type int $height Display height of the avatar in pixels. Defaults to $size. 4395 * @type int $width Display width of the avatar in pixels. Defaults to $size. 4396 * @type string $default URL for the default image or a default type. Accepts: 4397 * - '404' (return a 404 instead of a default image) 4398 * - 'retro' (a 8-bit arcade-style pixelated face) 4399 * - 'robohash' (a robot) 4400 * - 'monsterid' (a monster) 4401 * - 'wavatar' (a cartoon face) 4402 * - 'identicon' (the "quilt", a geometric pattern) 4403 * - 'initials' (initials based avatar with background color) 4404 * - 'color' (generated background color) 4405 * - 'mystery', 'mm', or 'mysteryman' (The Oyster Man) 4406 * - 'blank' (transparent GIF) 4407 * - 'gravatar_default' (the Gravatar logo) 4408 * Default is the value of the 'avatar_default' option, 4409 * with a fallback of 'mystery'. 4410 * @type bool $force_default Whether to always show the default image, never the Gravatar. 4411 * Default false. 4412 * @type string $rating What rating to display avatars up to. Accepts: 4413 * - 'G' (suitable for all audiences) 4414 * - 'PG' (possibly offensive, usually for audiences 13 and above) 4415 * - 'R' (intended for adult audiences above 17) 4416 * - 'X' (even more mature than above) 4417 * Default is the value of the 'avatar_rating' option. 4418 * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values. 4419 * For Gravatars this setting is ignored and HTTPS is used to avoid 4420 * unnecessary redirects. The setting is retained for systems using 4421 * the {@see 'pre_get_avatar_data'} filter to customize avatars. 4422 * Default null. 4423 * @type array $processed_args When the function returns, the value will be the processed/sanitized $args 4424 * plus a "found_avatar" guess. Pass as a reference. Default null. 4425 * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. 4426 * Default empty. 4427 * } 4428 * @return array { 4429 * Along with the arguments passed in `$args`, this will contain a couple of extra arguments. 4430 * 4431 * @type bool $found_avatar True if an avatar was found for this user, 4432 * false or not set if none was found. 4433 * @type string|false $url The URL of the avatar that was found, or false. 4434 * } 4435 * @phpstan-return array{ found_avatar: bool, url: string|false, ... } 4436 */ 4437 function get_avatar_data( $id_or_email, $args = null ) { 4438 $args = wp_parse_args( 4439 $args, 4440 array( 4441 'size' => 96, 4442 'height' => null, 4443 'width' => null, 4444 'default' => get_option( 'avatar_default', 'mystery' ), 4445 'force_default' => false, 4446 'rating' => get_option( 'avatar_rating' ), 4447 'scheme' => null, 4448 'processed_args' => null, // If used, should be a reference. 4449 'extra_attr' => '', 4450 ) 4451 ); 4452 4453 if ( is_numeric( $args['size'] ) ) { 4454 $args['size'] = absint( $args['size'] ); 4455 if ( ! $args['size'] ) { 4456 $args['size'] = 96; 4457 } 4458 } else { 4459 $args['size'] = 96; 4460 } 4461 4462 if ( is_numeric( $args['height'] ) ) { 4463 $args['height'] = absint( $args['height'] ); 4464 if ( ! $args['height'] ) { 4465 $args['height'] = $args['size']; 4466 } 4467 } else { 4468 $args['height'] = $args['size']; 4469 } 4470 4471 if ( is_numeric( $args['width'] ) ) { 4472 $args['width'] = absint( $args['width'] ); 4473 if ( ! $args['width'] ) { 4474 $args['width'] = $args['size']; 4475 } 4476 } else { 4477 $args['width'] = $args['size']; 4478 } 4479 4480 if ( empty( $args['default'] ) ) { 4481 $args['default'] = get_option( 'avatar_default', 'mystery' ); 4482 } 4483 4484 switch ( $args['default'] ) { 4485 case 'mm': 4486 case 'mystery': 4487 case 'mysteryman': 4488 $args['default'] = 'mm'; 4489 break; 4490 case 'gravatar_default': 4491 $args['default'] = false; 4492 break; 4493 } 4494 4495 $args['force_default'] = (bool) $args['force_default']; 4496 4497 $args['rating'] = strtolower( $args['rating'] ); 4498 4499 $args['found_avatar'] = false; 4500 4501 /** 4502 * Filters whether to retrieve the avatar URL early. 4503 * 4504 * Passing a non-null value in the 'url' member of the return array will 4505 * effectively short circuit get_avatar_data(), passing the value through 4506 * the {@see 'get_avatar_data'} filter and returning early. 4507 * 4508 * @since 4.2.0 4509 * 4510 * @param array $args Arguments passed to get_avatar_data(), after processing. 4511 * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar SHA-256 or MD5 hash, 4512 * user email, WP_User object, WP_Post object, or WP_Comment object. 4513 */ 4514 $args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email ); 4515 4516 if ( isset( $args['url'] ) ) { 4517 /** This filter is documented in wp-includes/link-template.php */ 4518 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4519 } 4520 4521 $email_hash = ''; 4522 $user = false; 4523 $email = false; 4524 4525 if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) { 4526 $id_or_email = get_comment( $id_or_email ); 4527 } 4528 4529 // Process the user identifier. 4530 if ( is_numeric( $id_or_email ) ) { 4531 $user = get_user_by( 'id', absint( $id_or_email ) ); 4532 } elseif ( is_string( $id_or_email ) ) { 4533 if ( str_contains( $id_or_email, '@sha256.gravatar.com' ) ) { 4534 // SHA-256 hash. 4535 list( $email_hash ) = explode( '@', $id_or_email ); 4536 } elseif ( str_contains( $id_or_email, '@md5.gravatar.com' ) ) { 4537 // MD5 hash. 4538 list( $email_hash ) = explode( '@', $id_or_email ); 4539 } else { 4540 // Email address. 4541 $email = $id_or_email; 4542 } 4543 } elseif ( $id_or_email instanceof WP_User ) { 4544 // User object. 4545 $user = $id_or_email; 4546 } elseif ( $id_or_email instanceof WP_Post ) { 4547 // Post object. 4548 $user = get_user_by( 'id', (int) $id_or_email->post_author ); 4549 } elseif ( $id_or_email instanceof WP_Comment ) { 4550 if ( ! is_avatar_comment_type( get_comment_type( $id_or_email ) ) ) { 4551 $args['url'] = false; 4552 /** This filter is documented in wp-includes/link-template.php */ 4553 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4554 } 4555 4556 if ( ! empty( $id_or_email->user_id ) ) { 4557 $user = get_user_by( 'id', (int) $id_or_email->user_id ); 4558 } 4559 if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) { 4560 $email = $id_or_email->comment_author_email; 4561 } 4562 } 4563 4564 if ( ! $email_hash ) { 4565 if ( $user ) { 4566 $email = $user->user_email; 4567 } 4568 4569 if ( $email ) { 4570 $email_hash = hash( 'sha256', strtolower( trim( $email ) ) ); 4571 } 4572 } 4573 4574 if ( $email_hash ) { 4575 $args['found_avatar'] = true; 4576 } 4577 4578 $url_args = array( 4579 's' => $args['size'], 4580 'd' => $args['default'], 4581 'f' => $args['force_default'] ? 'y' : false, 4582 'r' => $args['rating'], 4583 ); 4584 4585 // Handle additional parameters for the 'initials' avatar type. 4586 if ( 'initials' === $args['default'] ) { 4587 $name = ''; 4588 4589 if ( $user ) { 4590 if ( '' !== $user->display_name ) { 4591 $name = $user->display_name; 4592 } elseif ( '' !== $user->first_name && '' !== $user->last_name ) { 4593 $name = sprintf( 4594 /* translators: 1: User's first name, 2: Last name. */ 4595 _x( '%1$s %2$s', 'Display name based on first name and last name' ), 4596 $user->first_name, 4597 $user->last_name 4598 ); 4599 } else { 4600 $name = $user->user_login; 4601 } 4602 } elseif ( $id_or_email instanceof WP_Comment ) { 4603 $name = $id_or_email->comment_author; 4604 } elseif ( is_string( $id_or_email ) && str_contains( $id_or_email, '@' ) ) { 4605 $name = str_replace( array( '.', '_', '-' ), ' ', substr( $id_or_email, 0, strpos( $id_or_email, '@' ) ) ); 4606 } 4607 4608 if ( '' !== $name ) { 4609 if ( ! str_contains( $name, ' ' ) || preg_match( '/\p{Han}|\p{Hiragana}|\p{Katakana}|\p{Hangul}/u', $name ) ) { 4610 $initials = mb_substr( $name, 0, min( 2, mb_strlen( $name, 'UTF-8' ) ), 'UTF-8' ); 4611 } else { 4612 $first = mb_substr( $name, 0, 1, 'UTF-8' ); 4613 $last = mb_substr( $name, strrpos( $name, ' ' ) + 1, 1, 'UTF-8' ); 4614 $initials = $first . $last; 4615 } 4616 4617 $url_args['initials'] = $initials; 4618 } 4619 } 4620 4621 /* 4622 * Gravatars are always served over HTTPS. 4623 * 4624 * The Gravatar website redirects HTTP requests to HTTPS URLs so always 4625 * use the HTTPS scheme to avoid unnecessary redirects. 4626 */ 4627 $url = 'https://secure.gravatar.com/avatar/' . $email_hash; 4628 4629 $url = add_query_arg( 4630 rawurlencode_deep( array_filter( $url_args ) ), 4631 $url 4632 ); 4633 4634 /** 4635 * Filters the avatar URL. 4636 * 4637 * @since 4.2.0 4638 * 4639 * @param string $url The URL of the avatar. 4640 * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar SHA-256 or MD5 hash, 4641 * user email, WP_User object, WP_Post object, or WP_Comment object. 4642 * @param array $args Arguments passed to get_avatar_data(), after processing. 4643 */ 4644 $args['url'] = apply_filters( 'get_avatar_url', $url, $id_or_email, $args ); 4645 4646 /** 4647 * Filters the avatar data. 4648 * 4649 * @since 4.2.0 4650 * 4651 * @param array $args Arguments passed to get_avatar_data(), after processing. 4652 * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar SHA-256 or MD5 hash, 4653 * user email, WP_User object, WP_Post object, or WP_Comment object. 4654 */ 4655 return apply_filters( 'get_avatar_data', $args, $id_or_email ); 4656 } 4657 4658 /** 4659 * Retrieves the URL of a file in the theme. 4660 * 4661 * Searches in the stylesheet directory before the template directory so themes 4662 * which inherit from a parent theme can just override one file. 4663 * 4664 * @since 4.7.0 4665 * 4666 * @param string $file Optional. File to search for in the stylesheet directory. 4667 * @return string The URL of the file. 4668 */ 4669 function get_theme_file_uri( $file = '' ) { 4670 $file = ltrim( $file, '/' ); 4671 4672 $stylesheet_directory = get_stylesheet_directory(); 4673 4674 if ( empty( $file ) ) { 4675 $url = get_stylesheet_directory_uri(); 4676 } elseif ( get_template_directory() !== $stylesheet_directory && file_exists( $stylesheet_directory . '/' . $file ) ) { 4677 $url = get_stylesheet_directory_uri() . '/' . $file; 4678 } else { 4679 $url = get_template_directory_uri() . '/' . $file; 4680 } 4681 4682 /** 4683 * Filters the URL to a file in the theme. 4684 * 4685 * @since 4.7.0 4686 * 4687 * @param string $url The file URL. 4688 * @param string $file The requested file to search for. 4689 */ 4690 return apply_filters( 'theme_file_uri', $url, $file ); 4691 } 4692 4693 /** 4694 * Retrieves the URL of a file in the parent theme. 4695 * 4696 * @since 4.7.0 4697 * 4698 * @param string $file Optional. File to return the URL for in the template directory. 4699 * @return string The URL of the file. 4700 */ 4701 function get_parent_theme_file_uri( $file = '' ) { 4702 $file = ltrim( $file, '/' ); 4703 4704 if ( empty( $file ) ) { 4705 $url = get_template_directory_uri(); 4706 } else { 4707 $url = get_template_directory_uri() . '/' . $file; 4708 } 4709 4710 /** 4711 * Filters the URL to a file in the parent theme. 4712 * 4713 * @since 4.7.0 4714 * 4715 * @param string $url The file URL. 4716 * @param string $file The requested file to search for. 4717 */ 4718 return apply_filters( 'parent_theme_file_uri', $url, $file ); 4719 } 4720 4721 /** 4722 * Retrieves the path of a file in the theme. 4723 * 4724 * Searches in the stylesheet directory before the template directory so themes 4725 * which inherit from a parent theme can just override one file. 4726 * 4727 * @since 4.7.0 4728 * 4729 * @param string $file Optional. File to search for in the stylesheet directory. 4730 * @return string The path of the file. 4731 */ 4732 function get_theme_file_path( $file = '' ) { 4733 $file = ltrim( $file, '/' ); 4734 4735 $stylesheet_directory = get_stylesheet_directory(); 4736 $template_directory = get_template_directory(); 4737 4738 if ( empty( $file ) ) { 4739 $path = $stylesheet_directory; 4740 } elseif ( $stylesheet_directory !== $template_directory && file_exists( $stylesheet_directory . '/' . $file ) ) { 4741 $path = $stylesheet_directory . '/' . $file; 4742 } else { 4743 $path = $template_directory . '/' . $file; 4744 } 4745 4746 /** 4747 * Filters the path to a file in the theme. 4748 * 4749 * @since 4.7.0 4750 * 4751 * @param string $path The file path. 4752 * @param string $file The requested file to search for. 4753 */ 4754 return apply_filters( 'theme_file_path', $path, $file ); 4755 } 4756 4757 /** 4758 * Retrieves the path of a file in the parent theme. 4759 * 4760 * @since 4.7.0 4761 * 4762 * @param string $file Optional. File to return the path for in the template directory. 4763 * @return string The path of the file. 4764 */ 4765 function get_parent_theme_file_path( $file = '' ) { 4766 $file = ltrim( $file, '/' ); 4767 4768 if ( empty( $file ) ) { 4769 $path = get_template_directory(); 4770 } else { 4771 $path = get_template_directory() . '/' . $file; 4772 } 4773 4774 /** 4775 * Filters the path to a file in the parent theme. 4776 * 4777 * @since 4.7.0 4778 * 4779 * @param string $path The file path. 4780 * @param string $file The requested file to search for. 4781 */ 4782 return apply_filters( 'parent_theme_file_path', $path, $file ); 4783 } 4784 4785 /** 4786 * Retrieves the URL to the privacy policy page. 4787 * 4788 * @since 4.9.6 4789 * 4790 * @return string The URL to the privacy policy page. Empty string if it doesn't exist. 4791 */ 4792 function get_privacy_policy_url() { 4793 $url = ''; 4794 $policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' ); 4795 4796 if ( ! empty( $policy_page_id ) && get_post_status( $policy_page_id ) === 'publish' ) { 4797 $url = (string) get_permalink( $policy_page_id ); 4798 } 4799 4800 /** 4801 * Filters the URL of the privacy policy page. 4802 * 4803 * @since 4.9.6 4804 * 4805 * @param string $url The URL to the privacy policy page. Empty string 4806 * if it doesn't exist. 4807 * @param int $policy_page_id The ID of privacy policy page. 4808 */ 4809 return apply_filters( 'privacy_policy_url', $url, $policy_page_id ); 4810 } 4811 4812 /** 4813 * Displays the privacy policy link with formatting, when applicable. 4814 * 4815 * @since 4.9.6 4816 * 4817 * @param string $before Optional. Display before privacy policy link. Default empty. 4818 * @param string $after Optional. Display after privacy policy link. Default empty. 4819 */ 4820 function the_privacy_policy_link( $before = '', $after = '' ) { 4821 echo get_the_privacy_policy_link( $before, $after ); 4822 } 4823 4824 /** 4825 * Returns the privacy policy link with formatting, when applicable. 4826 * 4827 * @since 4.9.6 4828 * @since 6.2.0 Added 'privacy-policy' rel attribute. 4829 * 4830 * @param string $before Optional. Display before privacy policy link. Default empty. 4831 * @param string $after Optional. Display after privacy policy link. Default empty. 4832 * @return string Markup for the link and surrounding elements. Empty string if it 4833 * doesn't exist. 4834 */ 4835 function get_the_privacy_policy_link( $before = '', $after = '' ) { 4836 $link = ''; 4837 $privacy_policy_url = get_privacy_policy_url(); 4838 $policy_page_id = (int) get_option( 'wp_page_for_privacy_policy' ); 4839 $page_title = ( $policy_page_id ) ? get_the_title( $policy_page_id ) : ''; 4840 4841 if ( $privacy_policy_url && $page_title ) { 4842 $link = sprintf( 4843 '<a class="privacy-policy-link" href="%s" rel="privacy-policy">%s</a>', 4844 esc_url( $privacy_policy_url ), 4845 esc_html( $page_title ) 4846 ); 4847 } 4848 4849 /** 4850 * Filters the privacy policy link. 4851 * 4852 * @since 4.9.6 4853 * 4854 * @param string $link The privacy policy link. Empty string if it 4855 * doesn't exist. 4856 * @param string $privacy_policy_url The URL of the privacy policy. Empty string 4857 * if it doesn't exist. 4858 */ 4859 $link = apply_filters( 'the_privacy_policy_link', $link, $privacy_policy_url ); 4860 4861 if ( $link ) { 4862 return $before . $link . $after; 4863 } 4864 4865 return ''; 4866 } 4867 4868 /** 4869 * Returns an array of URL hosts which are considered to be internal hosts. 4870 * 4871 * By default the list of internal hosts is comprised of the host name of 4872 * the site's home_url() (as parsed by wp_parse_url()). 4873 * 4874 * This list is used when determining if a specified URL is a link to a page on 4875 * the site itself or a link offsite (to an external host). This is used, for 4876 * example, when determining if the "nofollow" attribute should be applied to a 4877 * link. 4878 * 4879 * @see wp_is_internal_link 4880 * 4881 * @since 6.2.0 4882 * 4883 * @return string[] An array of URL hosts. 4884 */ 4885 function wp_internal_hosts() { 4886 static $internal_hosts; 4887 4888 if ( empty( $internal_hosts ) ) { 4889 /** 4890 * Filters the array of URL hosts which are considered internal. 4891 * 4892 * @since 6.2.0 4893 * 4894 * @param string[] $internal_hosts An array of internal URL hostnames. 4895 */ 4896 $internal_hosts = apply_filters( 4897 'wp_internal_hosts', 4898 array( 4899 wp_parse_url( home_url(), PHP_URL_HOST ), 4900 ) 4901 ); 4902 $internal_hosts = array_unique( 4903 array_map( 'strtolower', (array) $internal_hosts ) 4904 ); 4905 } 4906 4907 return $internal_hosts; 4908 } 4909 4910 /** 4911 * Determines whether or not the specified URL is of a host included in the internal hosts list. 4912 * 4913 * @see wp_internal_hosts() 4914 * 4915 * @since 6.2.0 4916 * 4917 * @param string $link The URL to test. 4918 * @return bool Returns true for internal URLs and false for all other URLs. 4919 */ 4920 function wp_is_internal_link( $link ) { 4921 $link = strtolower( $link ); 4922 if ( in_array( wp_parse_url( $link, PHP_URL_SCHEME ), wp_allowed_protocols(), true ) ) { 4923 return in_array( wp_parse_url( $link, PHP_URL_HOST ), wp_internal_hosts(), true ); 4924 } 4925 return false; 4926 }
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