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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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1 <?php 2 /** 3 * WordPress API for media display. 4 * 5 * @package WordPress 6 * @subpackage Media 7 */ 8 9 // Don't load directly. 10 if ( ! defined( 'ABSPATH' ) ) { 11 die( '-1' ); 12 } 13 14 /** 15 * Retrieves additional image sizes. 16 * 17 * @since 4.7.0 18 * 19 * @global array $_wp_additional_image_sizes 20 * 21 * @return array Additional images size data. 22 */ 23 function wp_get_additional_image_sizes() { 24 global $_wp_additional_image_sizes; 25 26 if ( ! $_wp_additional_image_sizes ) { 27 $_wp_additional_image_sizes = array(); 28 } 29 30 return $_wp_additional_image_sizes; 31 } 32 33 /** 34 * Scales down the default size of an image. 35 * 36 * This is so that the image is a better fit for the editor and theme. 37 * 38 * The `$size` parameter accepts either an array or a string. The supported string 39 * values are 'thumb' or 'thumbnail' for the given thumbnail size or defaults at 40 * 128 width and 96 height in pixels. Also supported for the string value is 41 * 'medium', 'medium_large' and 'full'. The 'full' isn't actually supported, but any value other 42 * than the supported will result in the content_width size or 500 if that is 43 * not set. 44 * 45 * Finally, there is a filter named {@see 'editor_max_image_size'}, that will be 46 * called on the calculated array for width and height, respectively. 47 * 48 * @since 2.5.0 49 * 50 * @global int $content_width 51 * 52 * @param int $width Width of the image in pixels. 53 * @param int $height Height of the image in pixels. 54 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 55 * of width and height values in pixels (in that order). Default 'medium'. 56 * @param string $context Optional. Could be 'display' (like in a theme) or 'edit' 57 * (like inserting into an editor). Default null. 58 * @return int[] { 59 * An array of width and height values. 60 * 61 * @type int $0 The maximum width in pixels. 62 * @type int $1 The maximum height in pixels. 63 * } 64 */ 65 function image_constrain_size_for_editor( $width, $height, $size = 'medium', $context = null ) { 66 global $content_width; 67 68 $_wp_additional_image_sizes = wp_get_additional_image_sizes(); 69 70 if ( ! $context ) { 71 $context = is_admin() ? 'edit' : 'display'; 72 } 73 74 if ( is_array( $size ) ) { 75 $max_width = $size[0]; 76 $max_height = $size[1]; 77 } elseif ( 'thumb' === $size || 'thumbnail' === $size ) { 78 $max_width = (int) get_option( 'thumbnail_size_w' ); 79 $max_height = (int) get_option( 'thumbnail_size_h' ); 80 // Last chance thumbnail size defaults. 81 if ( ! $max_width && ! $max_height ) { 82 $max_width = 128; 83 $max_height = 96; 84 } 85 } elseif ( 'medium' === $size ) { 86 $max_width = (int) get_option( 'medium_size_w' ); 87 $max_height = (int) get_option( 'medium_size_h' ); 88 89 } elseif ( 'medium_large' === $size ) { 90 $max_width = (int) get_option( 'medium_large_size_w' ); 91 $max_height = (int) get_option( 'medium_large_size_h' ); 92 93 if ( (int) $content_width > 0 ) { 94 $max_width = min( (int) $content_width, $max_width ); 95 } 96 } elseif ( 'large' === $size ) { 97 /* 98 * We're inserting a large size image into the editor. If it's a really 99 * big image we'll scale it down to fit reasonably within the editor 100 * itself, and within the theme's content width if it's known. The user 101 * can resize it in the editor if they wish. 102 */ 103 $max_width = (int) get_option( 'large_size_w' ); 104 $max_height = (int) get_option( 'large_size_h' ); 105 106 if ( (int) $content_width > 0 ) { 107 $max_width = min( (int) $content_width, $max_width ); 108 } 109 } elseif ( ! empty( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ), true ) ) { 110 $max_width = (int) $_wp_additional_image_sizes[ $size ]['width']; 111 $max_height = (int) $_wp_additional_image_sizes[ $size ]['height']; 112 // Only in admin. Assume that theme authors know what they're doing. 113 if ( (int) $content_width > 0 && 'edit' === $context ) { 114 $max_width = min( (int) $content_width, $max_width ); 115 } 116 } else { // $size === 'full' has no constraint. 117 $max_width = $width; 118 $max_height = $height; 119 } 120 121 /** 122 * Filters the maximum image size dimensions for the editor. 123 * 124 * @since 2.5.0 125 * 126 * @param int[] $max_image_size { 127 * An array of width and height values. 128 * 129 * @type int $0 The maximum width in pixels. 130 * @type int $1 The maximum height in pixels. 131 * } 132 * @param string|int[] $size Requested image size. Can be any registered image size name, or 133 * an array of width and height values in pixels (in that order). 134 * @param string $context The context the image is being resized for. 135 * Possible values are 'display' (like in a theme) 136 * or 'edit' (like inserting into an editor). 137 */ 138 list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context ); 139 140 return wp_constrain_dimensions( $width, $height, $max_width, $max_height ); 141 } 142 143 /** 144 * Retrieves width and height attributes using given width and height values. 145 * 146 * Both attributes are required in the sense that both parameters must have a 147 * value, but are optional in that if you set them to false or null, then they 148 * will not be added to the returned string. 149 * 150 * You can set the value using a string, but it will only take numeric values. 151 * If you wish to put 'px' after the numbers, then it will be stripped out of 152 * the return. 153 * 154 * @since 2.5.0 155 * 156 * @param int|string $width Image width in pixels. 157 * @param int|string $height Image height in pixels. 158 * @return string HTML attributes for width and, or height. 159 */ 160 function image_hwstring( $width, $height ) { 161 $out = ''; 162 if ( $width ) { 163 $out .= 'width="' . (int) $width . '" '; 164 } 165 if ( $height ) { 166 $out .= 'height="' . (int) $height . '" '; 167 } 168 return $out; 169 } 170 171 /** 172 * Scales an image to fit a particular size (such as 'thumb' or 'medium'). 173 * 174 * The URL might be the original image, or it might be a resized version. This 175 * function won't create a new resized copy, it will just return an already 176 * resized one if it exists. 177 * 178 * A plugin may use the {@see 'image_downsize'} filter to hook into and offer image 179 * resizing services for images. The hook must return an array with the same 180 * elements that are normally returned from the function. 181 * 182 * @since 2.5.0 183 * 184 * @param int $id Attachment ID for image. 185 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 186 * of width and height values in pixels (in that order). Default 'medium'. 187 * @return array|false { 188 * Array of image data, or boolean false if no image is available. 189 * 190 * @type string $0 Image source URL. 191 * @type int $1 Image width in pixels. 192 * @type int $2 Image height in pixels. 193 * @type bool $3 Whether the image is a resized image. 194 * } 195 */ 196 function image_downsize( $id, $size = 'medium' ) { 197 $is_image = wp_attachment_is_image( $id ); 198 199 /** 200 * Filters whether to preempt the output of image_downsize(). 201 * 202 * Returning a truthy value from the filter will effectively short-circuit 203 * down-sizing the image, returning that value instead. 204 * 205 * @since 2.5.0 206 * 207 * @param bool|array $downsize Whether to short-circuit the image downsize. 208 * @param int $id Attachment ID for image. 209 * @param string|int[] $size Requested image size. Can be any registered image size name, or 210 * an array of width and height values in pixels (in that order). 211 */ 212 $out = apply_filters( 'image_downsize', false, $id, $size ); 213 214 if ( $out ) { 215 return $out; 216 } 217 218 $img_url = wp_get_attachment_url( $id ); 219 $meta = wp_get_attachment_metadata( $id ); 220 $width = 0; 221 $height = 0; 222 $is_intermediate = false; 223 $img_url_basename = wp_basename( $img_url ); 224 225 /* 226 * If the file isn't an image, attempt to replace its URL with a rendered image from its meta. 227 * Otherwise, a non-image type could be returned. 228 */ 229 if ( ! $is_image ) { 230 if ( ! empty( $meta['sizes']['full'] ) ) { 231 $img_url = str_replace( $img_url_basename, $meta['sizes']['full']['file'], $img_url ); 232 $img_url_basename = $meta['sizes']['full']['file']; 233 $width = $meta['sizes']['full']['width']; 234 $height = $meta['sizes']['full']['height']; 235 } else { 236 return false; 237 } 238 } 239 240 // Try for a new style intermediate size. 241 $intermediate = image_get_intermediate_size( $id, $size ); 242 243 if ( $intermediate ) { 244 $img_url = str_replace( $img_url_basename, $intermediate['file'], $img_url ); 245 $width = $intermediate['width']; 246 $height = $intermediate['height']; 247 $is_intermediate = true; 248 } elseif ( 'thumbnail' === $size && ! empty( $meta['thumb'] ) && is_string( $meta['thumb'] ) ) { 249 // Fall back to the old thumbnail. 250 $imagefile = get_attached_file( $id ); 251 $thumbfile = str_replace( wp_basename( $imagefile ), wp_basename( $meta['thumb'] ), $imagefile ); 252 253 if ( file_exists( $thumbfile ) ) { 254 $info = wp_getimagesize( $thumbfile ); 255 256 if ( $info ) { 257 $img_url = str_replace( $img_url_basename, wp_basename( $thumbfile ), $img_url ); 258 $width = $info[0]; 259 $height = $info[1]; 260 $is_intermediate = true; 261 } 262 } 263 } 264 265 if ( ! $width && ! $height && isset( $meta['width'], $meta['height'] ) ) { 266 // Any other type: use the real image. 267 $width = $meta['width']; 268 $height = $meta['height']; 269 } 270 271 if ( $img_url ) { 272 // We have the actual image size, but might need to further constrain it if content_width is narrower. 273 list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); 274 275 return array( $img_url, $width, $height, $is_intermediate ); 276 } 277 278 return false; 279 } 280 281 /** 282 * Registers a new image size. 283 * 284 * @since 2.9.0 285 * 286 * @global array $_wp_additional_image_sizes Associative array of additional image sizes. 287 * 288 * @param string $name Image size identifier. 289 * @param int $width Optional. Image width in pixels. Default 0. 290 * @param int $height Optional. Image height in pixels. Default 0. 291 * @param bool|array $crop { 292 * Optional. Image cropping behavior. If false, the image will be scaled (default). 293 * If true, image will be cropped to the specified dimensions using center positions. 294 * If an array, the image will be cropped using the array to specify the crop location: 295 * 296 * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. 297 * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. 298 * } 299 */ 300 function add_image_size( $name, $width = 0, $height = 0, $crop = false ) { 301 global $_wp_additional_image_sizes; 302 303 $_wp_additional_image_sizes[ $name ] = array( 304 'width' => absint( $width ), 305 'height' => absint( $height ), 306 'crop' => $crop, 307 ); 308 } 309 310 /** 311 * Checks if an image size exists. 312 * 313 * @since 3.9.0 314 * 315 * @param string $name The image size to check. 316 * @return bool True if the image size exists, false if not. 317 */ 318 function has_image_size( $name ) { 319 $sizes = wp_get_additional_image_sizes(); 320 return isset( $sizes[ $name ] ); 321 } 322 323 /** 324 * Removes a new image size. 325 * 326 * @since 3.9.0 327 * 328 * @global array $_wp_additional_image_sizes 329 * 330 * @param string $name The image size to remove. 331 * @return bool True if the image size was successfully removed, false on failure. 332 */ 333 function remove_image_size( $name ) { 334 global $_wp_additional_image_sizes; 335 336 if ( isset( $_wp_additional_image_sizes[ $name ] ) ) { 337 unset( $_wp_additional_image_sizes[ $name ] ); 338 return true; 339 } 340 341 return false; 342 } 343 344 /** 345 * Registers an image size for the post thumbnail. 346 * 347 * @since 2.9.0 348 * 349 * @see add_image_size() for details on cropping behavior. 350 * 351 * @param int $width Image width in pixels. 352 * @param int $height Image height in pixels. 353 * @param bool|array $crop { 354 * Optional. Image cropping behavior. If false, the image will be scaled (default). 355 * If true, image will be cropped to the specified dimensions using center positions. 356 * If an array, the image will be cropped using the array to specify the crop location: 357 * 358 * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. 359 * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. 360 * } 361 */ 362 function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) { 363 add_image_size( 'post-thumbnail', $width, $height, $crop ); 364 } 365 366 /** 367 * Gets an img tag for an image attachment, scaling it down if requested. 368 * 369 * The {@see 'get_image_tag_class'} filter allows for changing the class name for the 370 * image without having to use regular expressions on the HTML content. The 371 * parameters are: what WordPress will use for the class, the Attachment ID, 372 * image align value, and the size the image should be. 373 * 374 * The second filter, {@see 'get_image_tag'}, has the HTML content, which can then be 375 * further manipulated by a plugin to change all attribute values and even HTML 376 * content. 377 * 378 * @since 2.5.0 379 * 380 * @param int $id Attachment ID. 381 * @param string $alt Image description for the alt attribute. 382 * @param string $title Image description for the title attribute. 383 * @param string $align Part of the class name for aligning the image. 384 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of 385 * width and height values in pixels (in that order). Default 'medium'. 386 * @return string HTML IMG element for given image attachment. 387 */ 388 function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) { 389 390 list( $img_src, $width, $height ) = image_downsize( $id, $size ); 391 $hwstring = image_hwstring( $width, $height ); 392 393 $title = $title ? 'title="' . esc_attr( $title ) . '" ' : ''; 394 395 $size_class = is_array( $size ) ? implode( 'x', $size ) : $size; 396 $class = 'align' . esc_attr( $align ) . ' size-' . esc_attr( $size_class ) . ' wp-image-' . $id; 397 398 /** 399 * Filters the value of the attachment's image tag class attribute. 400 * 401 * @since 2.6.0 402 * 403 * @param string $class CSS class name or space-separated list of classes. 404 * @param int $id Attachment ID. 405 * @param string $align Part of the class name for aligning the image. 406 * @param string|int[] $size Requested image size. Can be any registered image size name, or 407 * an array of width and height values in pixels (in that order). 408 */ 409 $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size ); 410 411 $html = '<img src="' . esc_url( $img_src ) . '" alt="' . esc_attr( $alt ) . '" ' . $title . $hwstring . 'class="' . $class . '" />'; 412 413 /** 414 * Filters the HTML content for the image tag. 415 * 416 * @since 2.6.0 417 * 418 * @param string $html HTML content for the image. 419 * @param int $id Attachment ID. 420 * @param string $alt Image description for the alt attribute. 421 * @param string $title Image description for the title attribute. 422 * @param string $align Part of the class name for aligning the image. 423 * @param string|int[] $size Requested image size. Can be any registered image size name, or 424 * an array of width and height values in pixels (in that order). 425 */ 426 return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); 427 } 428 429 /** 430 * Calculates the new dimensions for a down-sampled image. 431 * 432 * If either width or height are empty, no constraint is applied on 433 * that dimension. 434 * 435 * @since 2.5.0 436 * 437 * @param int $current_width Current width of the image. 438 * @param int $current_height Current height of the image. 439 * @param int $max_width Optional. Max width in pixels to constrain to. Default 0. 440 * @param int $max_height Optional. Max height in pixels to constrain to. Default 0. 441 * @return int[] { 442 * An array of width and height values. 443 * 444 * @type int $0 The width in pixels. 445 * @type int $1 The height in pixels. 446 * } 447 */ 448 function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) { 449 if ( ! $max_width && ! $max_height ) { 450 return array( $current_width, $current_height ); 451 } 452 453 $width_ratio = 1.0; 454 $height_ratio = 1.0; 455 $did_width = false; 456 $did_height = false; 457 458 if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) { 459 $width_ratio = $max_width / $current_width; 460 $did_width = true; 461 } 462 463 if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) { 464 $height_ratio = $max_height / $current_height; 465 $did_height = true; 466 } 467 468 // Calculate the larger/smaller ratios. 469 $smaller_ratio = min( $width_ratio, $height_ratio ); 470 $larger_ratio = max( $width_ratio, $height_ratio ); 471 472 if ( (int) round( $current_width * $larger_ratio ) > $max_width || (int) round( $current_height * $larger_ratio ) > $max_height ) { 473 // The larger ratio is too big. It would result in an overflow. 474 $ratio = $smaller_ratio; 475 } else { 476 // The larger ratio fits, and is likely to be a more "snug" fit. 477 $ratio = $larger_ratio; 478 } 479 480 // Very small dimensions may result in 0, 1 should be the minimum. 481 $w = max( 1, (int) round( $current_width * $ratio ) ); 482 $h = max( 1, (int) round( $current_height * $ratio ) ); 483 484 /* 485 * Sometimes, due to rounding, we'll end up with a result like this: 486 * 465x700 in a 177x177 box is 117x176... a pixel short. 487 * We also have issues with recursive calls resulting in an ever-changing result. 488 * Constraining to the result of a constraint should yield the original result. 489 * Thus we look for dimensions that are one pixel shy of the max value and bump them up. 490 */ 491 492 // Note: $did_width means it is possible $smaller_ratio == $width_ratio. 493 if ( $did_width && $w === $max_width - 1 ) { 494 $w = $max_width; // Round it up. 495 } 496 497 // Note: $did_height means it is possible $smaller_ratio == $height_ratio. 498 if ( $did_height && $h === $max_height - 1 ) { 499 $h = $max_height; // Round it up. 500 } 501 502 /** 503 * Filters dimensions to constrain down-sampled images to. 504 * 505 * @since 4.1.0 506 * 507 * @param int[] $dimensions { 508 * An array of width and height values. 509 * 510 * @type int $0 The width in pixels. 511 * @type int $1 The height in pixels. 512 * } 513 * @param int $current_width The current width of the image. 514 * @param int $current_height The current height of the image. 515 * @param int $max_width The maximum width permitted. 516 * @param int $max_height The maximum height permitted. 517 */ 518 return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height ); 519 } 520 521 /** 522 * Retrieves calculated resize dimensions for use in WP_Image_Editor. 523 * 524 * Calculates dimensions and coordinates for a resized image that fits 525 * within a specified width and height. 526 * 527 * @since 2.5.0 528 * 529 * @param int $orig_w Original width in pixels. 530 * @param int $orig_h Original height in pixels. 531 * @param int $dest_w New width in pixels. 532 * @param int $dest_h New height in pixels. 533 * @param bool|array $crop { 534 * Optional. Image cropping behavior. If false, the image will be scaled (default). 535 * If true, image will be cropped to the specified dimensions using center positions. 536 * If an array, the image will be cropped using the array to specify the crop location: 537 * 538 * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. 539 * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. 540 * } 541 * @return array|false Returned array matches parameters for `imagecopyresampled()`. False on failure. 542 */ 543 function image_resize_dimensions( $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) { 544 545 if ( $orig_w <= 0 || $orig_h <= 0 ) { 546 return false; 547 } 548 // At least one of $dest_w or $dest_h must be specific. 549 if ( $dest_w <= 0 && $dest_h <= 0 ) { 550 return false; 551 } 552 553 /** 554 * Filters whether to preempt calculating the image resize dimensions. 555 * 556 * Returning a non-null value from the filter will effectively short-circuit 557 * image_resize_dimensions(), returning that value instead. 558 * 559 * @since 3.4.0 560 * 561 * @param null|mixed $null Whether to preempt output of the resize dimensions. 562 * @param int $orig_w Original width in pixels. 563 * @param int $orig_h Original height in pixels. 564 * @param int $dest_w New width in pixels. 565 * @param int $dest_h New height in pixels. 566 * @param bool|array $crop Whether to crop image to specified width and height or resize. 567 * An array can specify positioning of the crop area. Default false. 568 */ 569 $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop ); 570 571 if ( null !== $output ) { 572 return $output; 573 } 574 575 // Stop if the destination size is larger than the original image dimensions. 576 if ( empty( $dest_h ) ) { 577 if ( $orig_w < $dest_w ) { 578 return false; 579 } 580 } elseif ( empty( $dest_w ) ) { 581 if ( $orig_h < $dest_h ) { 582 return false; 583 } 584 } else { 585 if ( $orig_w < $dest_w && $orig_h < $dest_h ) { 586 return false; 587 } 588 } 589 590 if ( $crop ) { 591 /* 592 * Crop the largest possible portion of the original image that we can size to $dest_w x $dest_h. 593 * Note that the requested crop dimensions are used as a maximum bounding box for the original image. 594 * If the original image's width or height is less than the requested width or height 595 * only the greater one will be cropped. 596 * For example when the original image is 600x300, and the requested crop dimensions are 400x400, 597 * the resulting image will be 400x300. 598 */ 599 $aspect_ratio = $orig_w / $orig_h; 600 $new_w = min( $dest_w, $orig_w ); 601 $new_h = min( $dest_h, $orig_h ); 602 603 if ( ! $new_w ) { 604 $new_w = (int) round( $new_h * $aspect_ratio ); 605 } 606 607 if ( ! $new_h ) { 608 $new_h = (int) round( $new_w / $aspect_ratio ); 609 } 610 611 $size_ratio = max( $new_w / $orig_w, $new_h / $orig_h ); 612 613 $crop_w = round( $new_w / $size_ratio ); 614 $crop_h = round( $new_h / $size_ratio ); 615 616 if ( ! is_array( $crop ) || count( $crop ) !== 2 ) { 617 $crop = array( 'center', 'center' ); 618 } 619 620 list( $x, $y ) = $crop; 621 622 if ( 'left' === $x ) { 623 $s_x = 0; 624 } elseif ( 'right' === $x ) { 625 $s_x = $orig_w - $crop_w; 626 } else { 627 $s_x = floor( ( $orig_w - $crop_w ) / 2 ); 628 } 629 630 if ( 'top' === $y ) { 631 $s_y = 0; 632 } elseif ( 'bottom' === $y ) { 633 $s_y = $orig_h - $crop_h; 634 } else { 635 $s_y = floor( ( $orig_h - $crop_h ) / 2 ); 636 } 637 } else { 638 // Resize using $dest_w x $dest_h as a maximum bounding box. 639 $crop_w = $orig_w; 640 $crop_h = $orig_h; 641 642 $s_x = 0; 643 $s_y = 0; 644 645 list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h ); 646 } 647 648 if ( wp_fuzzy_number_match( $new_w, $orig_w ) && wp_fuzzy_number_match( $new_h, $orig_h ) ) { 649 // The new size has virtually the same dimensions as the original image. 650 651 /** 652 * Filters whether to proceed with making an image sub-size with identical dimensions 653 * with the original/source image. Differences of 1px may be due to rounding and are ignored. 654 * 655 * @since 5.3.0 656 * 657 * @param bool $proceed The filtered value. 658 * @param int $orig_w Original image width. 659 * @param int $orig_h Original image height. 660 */ 661 $proceed = (bool) apply_filters( 'wp_image_resize_identical_dimensions', false, $orig_w, $orig_h ); 662 663 if ( ! $proceed ) { 664 return false; 665 } 666 } 667 668 /* 669 * The return array matches the parameters to imagecopyresampled(). 670 * int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h 671 */ 672 return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h ); 673 } 674 675 /** 676 * Resizes an image to make a thumbnail or intermediate size. 677 * 678 * The returned array has the file size, the image width, and image height. The 679 * {@see 'image_make_intermediate_size'} filter can be used to hook in and change the 680 * values of the returned array. The only parameter is the resized file path. 681 * 682 * @since 2.5.0 683 * 684 * @param string $file File path. 685 * @param int $width Image width. 686 * @param int $height Image height. 687 * @param bool|array $crop { 688 * Optional. Image cropping behavior. If false, the image will be scaled (default). 689 * If true, image will be cropped to the specified dimensions using center positions. 690 * If an array, the image will be cropped using the array to specify the crop location: 691 * 692 * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. 693 * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. 694 * } 695 * @return array|false Metadata array on success. False if no image was created. 696 */ 697 function image_make_intermediate_size( $file, $width, $height, $crop = false ) { 698 if ( $width || $height ) { 699 $editor = wp_get_image_editor( $file ); 700 701 if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) ) { 702 return false; 703 } 704 705 $resized_file = $editor->save(); 706 707 if ( ! is_wp_error( $resized_file ) && $resized_file ) { 708 unset( $resized_file['path'] ); 709 return $resized_file; 710 } 711 } 712 return false; 713 } 714 715 /** 716 * Helper function to test if aspect ratios for two images match. 717 * 718 * @since 4.6.0 719 * 720 * @param int $source_width Width of the first image in pixels. 721 * @param int $source_height Height of the first image in pixels. 722 * @param int $target_width Width of the second image in pixels. 723 * @param int $target_height Height of the second image in pixels. 724 * @return bool True if aspect ratios match within 1px. False if not. 725 */ 726 function wp_image_matches_ratio( $source_width, $source_height, $target_width, $target_height ) { 727 /* 728 * To test for varying crops, we constrain the dimensions of the larger image 729 * to the dimensions of the smaller image and see if they match. 730 */ 731 if ( $source_width > $target_width ) { 732 $constrained_size = wp_constrain_dimensions( $source_width, $source_height, $target_width ); 733 $expected_size = array( $target_width, $target_height ); 734 } else { 735 $constrained_size = wp_constrain_dimensions( $target_width, $target_height, $source_width ); 736 $expected_size = array( $source_width, $source_height ); 737 } 738 739 // If the image dimensions are within 1px of the expected size, we consider it a match. 740 $matched = ( wp_fuzzy_number_match( $constrained_size[0], $expected_size[0] ) && wp_fuzzy_number_match( $constrained_size[1], $expected_size[1] ) ); 741 742 return $matched; 743 } 744 745 /** 746 * Retrieves the image's intermediate size (resized) path, width, and height. 747 * 748 * The $size parameter can be an array with the width and height respectively. 749 * If the size matches the 'sizes' metadata array for width and height, then it 750 * will be used. If there is no direct match, then the nearest image size larger 751 * than the specified size will be used. If nothing is found, then the function 752 * will break out and return false. 753 * 754 * The metadata 'sizes' is used for compatible sizes that can be used for the 755 * parameter $size value. 756 * 757 * The url path will be given, when the $size parameter is a string. 758 * 759 * If you are passing an array for the $size, you should consider using 760 * add_image_size() so that a cropped version is generated. It's much more 761 * efficient than having to find the closest-sized image and then having the 762 * browser scale down the image. 763 * 764 * @since 2.5.0 765 * 766 * @param int $post_id Attachment ID. 767 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 768 * of width and height values in pixels (in that order). Default 'thumbnail'. 769 * @return array|false { 770 * Array of file relative path, width, and height on success. Additionally includes absolute 771 * path and URL if registered size is passed to `$size` parameter. False on failure. 772 * 773 * @type string $file Filename of image. 774 * @type int $width Width of image in pixels. 775 * @type int $height Height of image in pixels. 776 * @type string $path Path of image relative to uploads directory. 777 * @type string $url URL of image. 778 * } 779 */ 780 function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) { 781 $imagedata = wp_get_attachment_metadata( $post_id ); 782 783 if ( ! $size || ! is_array( $imagedata ) || empty( $imagedata['sizes'] ) ) { 784 return false; 785 } 786 787 $data = array(); 788 789 // Find the best match when '$size' is an array. 790 if ( is_array( $size ) ) { 791 $candidates = array(); 792 793 if ( ! isset( $imagedata['file'] ) && isset( $imagedata['sizes']['full'] ) ) { 794 $imagedata['height'] = $imagedata['sizes']['full']['height']; 795 $imagedata['width'] = $imagedata['sizes']['full']['width']; 796 } 797 798 foreach ( $imagedata['sizes'] as $_size => $data ) { 799 // If there's an exact match to an existing image size, short circuit. 800 if ( (int) $data['width'] === (int) $size[0] && (int) $data['height'] === (int) $size[1] ) { 801 $candidates[ $data['width'] * $data['height'] ] = $data; 802 break; 803 } 804 805 // If it's not an exact match, consider larger sizes with the same aspect ratio. 806 if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) { 807 // If '0' is passed to either size, we test ratios against the original file. 808 if ( 0 === $size[0] || 0 === $size[1] ) { 809 $same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $imagedata['width'], $imagedata['height'] ); 810 } else { 811 $same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $size[0], $size[1] ); 812 } 813 814 if ( $same_ratio ) { 815 $candidates[ $data['width'] * $data['height'] ] = $data; 816 } 817 } 818 } 819 820 if ( ! empty( $candidates ) ) { 821 // Sort the array by size if we have more than one candidate. 822 if ( 1 < count( $candidates ) ) { 823 ksort( $candidates ); 824 } 825 826 $data = array_shift( $candidates ); 827 /* 828 * When the size requested is smaller than the thumbnail dimensions, we 829 * fall back to the thumbnail size to maintain backward compatibility with 830 * pre 4.6 versions of WordPress. 831 */ 832 } elseif ( ! empty( $imagedata['sizes']['thumbnail'] ) && $imagedata['sizes']['thumbnail']['width'] >= $size[0] && $imagedata['sizes']['thumbnail']['width'] >= $size[1] ) { 833 $data = $imagedata['sizes']['thumbnail']; 834 } else { 835 return false; 836 } 837 838 // Constrain the width and height attributes to the requested values. 839 list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); 840 841 } elseif ( ! empty( $imagedata['sizes'][ $size ] ) ) { 842 $data = $imagedata['sizes'][ $size ]; 843 } 844 845 // If we still don't have a match at this point, return false. 846 if ( empty( $data ) ) { 847 return false; 848 } 849 850 // Include the full filesystem path of the intermediate file. 851 if ( empty( $data['path'] ) && ! empty( $data['file'] ) && ! empty( $imagedata['file'] ) ) { 852 $file_url = wp_get_attachment_url( $post_id ); 853 $data['path'] = path_join( dirname( $imagedata['file'] ), $data['file'] ); 854 $data['url'] = path_join( dirname( $file_url ), $data['file'] ); 855 } 856 857 /** 858 * Filters the output of image_get_intermediate_size() 859 * 860 * @since 4.4.0 861 * 862 * @see image_get_intermediate_size() 863 * 864 * @param array $data Array of file relative path, width, and height on success. May also include 865 * file absolute path and URL. 866 * @param int $post_id The ID of the image attachment. 867 * @param string|int[] $size Requested image size. Can be any registered image size name, or 868 * an array of width and height values in pixels (in that order). 869 */ 870 return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size ); 871 } 872 873 /** 874 * Gets the available intermediate image size names. 875 * 876 * @since 3.0.0 877 * 878 * @return string[] An array of image size names. 879 */ 880 function get_intermediate_image_sizes() { 881 $default_sizes = array( 'thumbnail', 'medium', 'medium_large', 'large' ); 882 $additional_sizes = wp_get_additional_image_sizes(); 883 884 if ( ! empty( $additional_sizes ) ) { 885 $default_sizes = array_merge( $default_sizes, array_keys( $additional_sizes ) ); 886 } 887 888 /** 889 * Filters the list of intermediate image sizes. 890 * 891 * @since 2.5.0 892 * 893 * @param string[] $default_sizes An array of intermediate image size names. Defaults 894 * are 'thumbnail', 'medium', 'medium_large', 'large'. 895 */ 896 return apply_filters( 'intermediate_image_sizes', $default_sizes ); 897 } 898 899 /** 900 * Returns a normalized list of all currently registered image sub-sizes. 901 * 902 * @since 5.3.0 903 * @uses wp_get_additional_image_sizes() 904 * @uses get_intermediate_image_sizes() 905 * 906 * @return array[] Associative array of arrays of image sub-size information, 907 * keyed by image size name. 908 */ 909 function wp_get_registered_image_subsizes() { 910 $additional_sizes = wp_get_additional_image_sizes(); 911 $all_sizes = array(); 912 913 foreach ( get_intermediate_image_sizes() as $size_name ) { 914 $size_data = array( 915 'width' => 0, 916 'height' => 0, 917 'crop' => false, 918 ); 919 920 if ( isset( $additional_sizes[ $size_name ]['width'] ) ) { 921 // For sizes added by plugins and themes. 922 $size_data['width'] = (int) $additional_sizes[ $size_name ]['width']; 923 } else { 924 // For default sizes set in options. 925 $size_data['width'] = (int) get_option( "{$size_name}_size_w" ); 926 } 927 928 if ( isset( $additional_sizes[ $size_name ]['height'] ) ) { 929 $size_data['height'] = (int) $additional_sizes[ $size_name ]['height']; 930 } else { 931 $size_data['height'] = (int) get_option( "{$size_name}_size_h" ); 932 } 933 934 if ( empty( $size_data['width'] ) && empty( $size_data['height'] ) ) { 935 // This size isn't set. 936 continue; 937 } 938 939 if ( isset( $additional_sizes[ $size_name ]['crop'] ) ) { 940 $size_data['crop'] = $additional_sizes[ $size_name ]['crop']; 941 } else { 942 $size_data['crop'] = get_option( "{$size_name}_crop" ); 943 } 944 945 if ( ! is_array( $size_data['crop'] ) || empty( $size_data['crop'] ) ) { 946 $size_data['crop'] = (bool) $size_data['crop']; 947 } 948 949 $all_sizes[ $size_name ] = $size_data; 950 } 951 952 return $all_sizes; 953 } 954 955 /** 956 * Retrieves an image to represent an attachment. 957 * 958 * @since 2.5.0 959 * 960 * @param int $attachment_id Image attachment ID. 961 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of 962 * width and height values in pixels (in that order). Default 'thumbnail'. 963 * @param bool $icon Optional. Whether the image should fall back to a mime type icon. Default false. 964 * @return array|false { 965 * Array of image data, or boolean false if no image is available. 966 * 967 * @type string $0 Image source URL. 968 * @type int $1 Image width in pixels. 969 * @type int $2 Image height in pixels. 970 * @type bool $3 Whether the image is a resized image. 971 * } 972 */ 973 function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) { 974 // Get a thumbnail or intermediate image if there is one. 975 $image = image_downsize( $attachment_id, $size ); 976 if ( ! $image ) { 977 $src = false; 978 979 if ( $icon ) { 980 $src = wp_mime_type_icon( $attachment_id, '.svg' ); 981 982 if ( $src ) { 983 /** This filter is documented in wp-includes/post.php */ 984 $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); 985 986 $src_file = $icon_dir . '/' . wp_basename( $src ); 987 988 list( $width, $height ) = wp_getimagesize( $src_file ); 989 990 $ext = strtolower( substr( $src_file, -4 ) ); 991 992 if ( '.svg' === $ext ) { 993 // SVG does not have true dimensions, so this assigns width and height directly. 994 $width = 48; 995 $height = 64; 996 } else { 997 list( $width, $height ) = wp_getimagesize( $src_file ); 998 } 999 } 1000 } 1001 1002 if ( $src && $width && $height ) { 1003 $image = array( $src, $width, $height, false ); 1004 } 1005 } 1006 /** 1007 * Filters the attachment image source result. 1008 * 1009 * @since 4.3.0 1010 * 1011 * @param array|false $image { 1012 * Array of image data, or boolean false if no image is available. 1013 * 1014 * @type string $0 Image source URL. 1015 * @type int $1 Image width in pixels. 1016 * @type int $2 Image height in pixels. 1017 * @type bool $3 Whether the image is a resized image. 1018 * } 1019 * @param int $attachment_id Image attachment ID. 1020 * @param string|int[] $size Requested image size. Can be any registered image size name, or 1021 * an array of width and height values in pixels (in that order). 1022 * @param bool $icon Whether the image should be treated as an icon. 1023 */ 1024 return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon ); 1025 } 1026 1027 /** 1028 * Gets an HTML img element representing an image attachment. 1029 * 1030 * While `$size` will accept an array, it is better to register a size with 1031 * add_image_size() so that a cropped version is generated. It's much more 1032 * efficient than having to find the closest-sized image and then having the 1033 * browser scale down the image. 1034 * 1035 * @since 2.5.0 1036 * @since 4.4.0 The `$srcset` and `$sizes` attributes were added. 1037 * @since 5.5.0 The `$loading` attribute was added. 1038 * @since 6.1.0 The `$decoding` attribute was added. 1039 * 1040 * @param int $attachment_id Image attachment ID. 1041 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 1042 * of width and height values in pixels (in that order). Default 'thumbnail'. 1043 * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. 1044 * @param string|array $attr { 1045 * Optional. Attributes for the image markup. 1046 * 1047 * @type string $src Image attachment URL. 1048 * @type string $class CSS class name or space-separated list of classes. 1049 * Default `attachment-$size_class size-$size_class`, 1050 * where `$size_class` is the image size being requested. 1051 * @type string $alt Image description for the alt attribute. 1052 * @type string $srcset The 'srcset' attribute value. 1053 * @type string $sizes The 'sizes' attribute value. 1054 * @type string|false $loading The 'loading' attribute value. Passing a value of false 1055 * will result in the attribute being omitted for the image. 1056 * Default determined by {@see wp_get_loading_optimization_attributes()}. 1057 * @type string $decoding The 'decoding' attribute value. Possible values are 1058 * 'async' (default), 'sync', or 'auto'. Passing false or an empty 1059 * string will result in the attribute being omitted. 1060 * @type string $fetchpriority The 'fetchpriority' attribute value, whether `high`, `low`, or `auto`. 1061 * Default determined by {@see wp_get_loading_optimization_attributes()}. 1062 * } 1063 * @return string HTML img element or empty string on failure. 1064 */ 1065 function wp_get_attachment_image( $attachment_id, $size = 'thumbnail', $icon = false, $attr = '' ) { 1066 $html = ''; 1067 $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); 1068 1069 if ( $image ) { 1070 list( $src, $width, $height ) = $image; 1071 1072 $attachment = get_post( $attachment_id ); 1073 $size_class = $size; 1074 1075 if ( is_array( $size_class ) ) { 1076 $size_class = implode( 'x', $size_class ); 1077 } 1078 1079 $default_attr = array( 1080 'src' => $src, 1081 'class' => "attachment-$size_class size-$size_class", 1082 'alt' => trim( strip_tags( get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ) ) ), 1083 ); 1084 1085 /** 1086 * Filters the context in which wp_get_attachment_image() is used. 1087 * 1088 * @since 6.3.0 1089 * 1090 * @param string $context The context. Default 'wp_get_attachment_image'. 1091 */ 1092 $context = apply_filters( 'wp_get_attachment_image_context', 'wp_get_attachment_image' ); 1093 $attr = wp_parse_args( $attr, $default_attr ); 1094 $attr['width'] = $width; 1095 $attr['height'] = $height; 1096 1097 $loading_optimization_attr = wp_get_loading_optimization_attributes( 1098 'img', 1099 $attr, 1100 $context 1101 ); 1102 1103 // Add loading optimization attributes if not available. 1104 $attr = array_merge( $attr, $loading_optimization_attr ); 1105 1106 // Omit the `decoding` attribute if the value is invalid according to the spec. 1107 if ( empty( $attr['decoding'] ) || ! in_array( $attr['decoding'], array( 'async', 'sync', 'auto' ), true ) ) { 1108 unset( $attr['decoding'] ); 1109 } 1110 1111 /* 1112 * If the default value of `lazy` for the `loading` attribute is overridden 1113 * to omit the attribute for this image, ensure it is not included. 1114 */ 1115 if ( isset( $attr['loading'] ) && ! $attr['loading'] ) { 1116 unset( $attr['loading'] ); 1117 } 1118 1119 // If the `fetchpriority` attribute is overridden and set to false or an empty string. 1120 if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) { 1121 unset( $attr['fetchpriority'] ); 1122 } 1123 1124 // Generate 'srcset' and 'sizes' if not already present. 1125 if ( empty( $attr['srcset'] ) ) { 1126 $image_meta = wp_get_attachment_metadata( $attachment_id ); 1127 1128 if ( is_array( $image_meta ) ) { 1129 $size_array = array( absint( $width ), absint( $height ) ); 1130 $srcset = wp_calculate_image_srcset( $size_array, $src, $image_meta, $attachment_id ); 1131 $sizes = wp_calculate_image_sizes( $size_array, $src, $image_meta, $attachment_id ); 1132 1133 if ( $srcset && ( $sizes || ! empty( $attr['sizes'] ) ) ) { 1134 $attr['srcset'] = $srcset; 1135 1136 if ( empty( $attr['sizes'] ) ) { 1137 $attr['sizes'] = $sizes; 1138 } 1139 } 1140 } 1141 } 1142 1143 /** This filter is documented in wp-includes/media.php */ 1144 $add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true ); 1145 1146 // Adds 'auto' to the sizes attribute if applicable. 1147 if ( 1148 $add_auto_sizes && 1149 isset( $attr['loading'] ) && 1150 'lazy' === $attr['loading'] && 1151 isset( $attr['sizes'] ) && 1152 ! wp_sizes_attribute_includes_valid_auto( $attr['sizes'] ) 1153 ) { 1154 $attr['sizes'] = 'auto, ' . $attr['sizes']; 1155 } 1156 1157 /** 1158 * Filters the list of attachment image attributes. 1159 * 1160 * @since 2.8.0 1161 * 1162 * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. 1163 * See wp_get_attachment_image(). 1164 * @param WP_Post $attachment Image attachment post. 1165 * @param string|int[] $size Requested image size. Can be any registered image size name, or 1166 * an array of width and height values in pixels (in that order). 1167 */ 1168 $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size ); 1169 1170 if ( isset( $attr['height'] ) && is_numeric( $attr['height'] ) ) { 1171 $height = absint( $attr['height'] ); 1172 } 1173 if ( isset( $attr['width'] ) && is_numeric( $attr['width'] ) ) { 1174 $width = absint( $attr['width'] ); 1175 } 1176 unset( $attr['height'], $attr['width'] ); 1177 $attr = array_map( 'esc_attr', $attr ); 1178 $hwstring = image_hwstring( $width, $height ); 1179 $html = rtrim( "<img $hwstring" ); 1180 1181 foreach ( $attr as $name => $value ) { 1182 $html .= " $name=" . '"' . $value . '"'; 1183 } 1184 1185 $html .= ' />'; 1186 } 1187 1188 /** 1189 * Filters the HTML img element representing an image attachment. 1190 * 1191 * @since 5.6.0 1192 * 1193 * @param string $html HTML img element or empty string on failure. 1194 * @param int $attachment_id Image attachment ID. 1195 * @param string|int[] $size Requested image size. Can be any registered image size name, or 1196 * an array of width and height values in pixels (in that order). 1197 * @param bool $icon Whether the image should be treated as an icon. 1198 * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. 1199 * See wp_get_attachment_image(). 1200 */ 1201 return apply_filters( 'wp_get_attachment_image', $html, $attachment_id, $size, $icon, $attr ); 1202 } 1203 1204 /** 1205 * Gets the URL of an image attachment. 1206 * 1207 * @since 4.4.0 1208 * 1209 * @param int $attachment_id Image attachment ID. 1210 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of 1211 * width and height values in pixels (in that order). Default 'thumbnail'. 1212 * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. 1213 * @return string|false Attachment URL or false if no image is available. If `$size` does not match 1214 * any registered image size, the original image URL will be returned. 1215 */ 1216 function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) { 1217 $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); 1218 return isset( $image[0] ) ? $image[0] : false; 1219 } 1220 1221 /** 1222 * Gets the attachment path relative to the upload directory. 1223 * 1224 * @since 4.4.1 1225 * @access private 1226 * 1227 * @param string $file Attachment file name. 1228 * @return string Attachment path relative to the upload directory. 1229 */ 1230 function _wp_get_attachment_relative_path( $file ) { 1231 $dirname = dirname( $file ); 1232 1233 if ( '.' === $dirname ) { 1234 return ''; 1235 } 1236 1237 if ( str_contains( $dirname, 'wp-content/uploads' ) ) { 1238 // Get the directory name relative to the upload directory (back compat for pre-2.7 uploads). 1239 $dirname = substr( $dirname, strpos( $dirname, 'wp-content/uploads' ) + 18 ); 1240 $dirname = ltrim( $dirname, '/' ); 1241 } 1242 1243 return $dirname; 1244 } 1245 1246 /** 1247 * Gets the image size as array from its meta data. 1248 * 1249 * Used for responsive images. 1250 * 1251 * @since 4.4.0 1252 * @access private 1253 * 1254 * @param string $size_name Image size. Accepts any registered image size name. 1255 * @param array $image_meta The image meta data. 1256 * @return array|false { 1257 * Array of width and height or false if the size isn't present in the meta data. 1258 * 1259 * @type int $0 Image width. 1260 * @type int $1 Image height. 1261 * } 1262 */ 1263 function _wp_get_image_size_from_meta( $size_name, $image_meta ) { 1264 if ( 'full' === $size_name ) { 1265 return array( 1266 absint( $image_meta['width'] ), 1267 absint( $image_meta['height'] ), 1268 ); 1269 } elseif ( ! empty( $image_meta['sizes'][ $size_name ] ) ) { 1270 return array( 1271 absint( $image_meta['sizes'][ $size_name ]['width'] ), 1272 absint( $image_meta['sizes'][ $size_name ]['height'] ), 1273 ); 1274 } 1275 1276 return false; 1277 } 1278 1279 /** 1280 * Retrieves the value for an image attachment's 'srcset' attribute. 1281 * 1282 * @since 4.4.0 1283 * 1284 * @see wp_calculate_image_srcset() 1285 * 1286 * @param int $attachment_id Image attachment ID. 1287 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of 1288 * width and height values in pixels (in that order). Default 'medium'. 1289 * @param array|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. 1290 * Default null. 1291 * @return string|false A 'srcset' value string or false. 1292 */ 1293 function wp_get_attachment_image_srcset( $attachment_id, $size = 'medium', $image_meta = null ) { 1294 $image = wp_get_attachment_image_src( $attachment_id, $size ); 1295 1296 if ( ! $image ) { 1297 return false; 1298 } 1299 1300 if ( ! is_array( $image_meta ) ) { 1301 $image_meta = wp_get_attachment_metadata( $attachment_id ); 1302 } 1303 1304 $image_src = $image[0]; 1305 $size_array = array( 1306 absint( $image[1] ), 1307 absint( $image[2] ), 1308 ); 1309 1310 return wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id ); 1311 } 1312 1313 /** 1314 * A helper function to calculate the image sources to include in a 'srcset' attribute. 1315 * 1316 * @since 4.4.0 1317 * 1318 * @param int[] $size_array { 1319 * An array of width and height values. 1320 * 1321 * @type int $0 The width in pixels. 1322 * @type int $1 The height in pixels. 1323 * } 1324 * @param string $image_src The 'src' of the image. 1325 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1326 * @param int $attachment_id Optional. The image attachment ID. Default 0. 1327 * @return string|false The 'srcset' attribute value. False on error or when only one source exists. 1328 */ 1329 function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id = 0 ) { 1330 /** 1331 * Pre-filters the image meta to be able to fix inconsistencies in the stored data. 1332 * 1333 * @since 4.5.0 1334 * 1335 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1336 * @param int[] $size_array { 1337 * An array of requested width and height values. 1338 * 1339 * @type int $0 The width in pixels. 1340 * @type int $1 The height in pixels. 1341 * } 1342 * @param string $image_src The 'src' of the image. 1343 * @param int $attachment_id The image attachment ID or 0 if not supplied. 1344 */ 1345 $image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id ); 1346 1347 if ( empty( $image_meta['sizes'] ) || ! isset( $image_meta['file'] ) || strlen( $image_meta['file'] ) < 4 ) { 1348 return false; 1349 } 1350 1351 $image_sizes = $image_meta['sizes']; 1352 1353 // Get the width and height of the image. 1354 $image_width = (int) $size_array[0]; 1355 $image_height = (int) $size_array[1]; 1356 1357 // Bail early if error/no width. 1358 if ( $image_width < 1 ) { 1359 return false; 1360 } 1361 1362 $image_basename = wp_basename( $image_meta['file'] ); 1363 1364 /* 1365 * WordPress flattens animated GIFs into one frame when generating intermediate sizes. 1366 * To avoid hiding animation in user content, if src is a full size GIF, a srcset attribute is not generated. 1367 * If src is an intermediate size GIF, the full size is excluded from srcset to keep a flattened GIF from becoming animated. 1368 */ 1369 if ( ! isset( $image_sizes['thumbnail']['mime-type'] ) || 'image/gif' !== $image_sizes['thumbnail']['mime-type'] ) { 1370 $image_sizes[] = array( 1371 'width' => $image_meta['width'], 1372 'height' => $image_meta['height'], 1373 'file' => $image_basename, 1374 ); 1375 } elseif ( str_contains( $image_src, $image_meta['file'] ) ) { 1376 return false; 1377 } 1378 1379 // Retrieve the uploads sub-directory from the full size image. 1380 $dirname = _wp_get_attachment_relative_path( $image_meta['file'] ); 1381 1382 if ( $dirname ) { 1383 $dirname = trailingslashit( $dirname ); 1384 } 1385 1386 $upload_dir = wp_get_upload_dir(); 1387 $image_baseurl = trailingslashit( $upload_dir['baseurl'] ) . $dirname; 1388 1389 /* 1390 * If currently on HTTPS, prefer HTTPS URLs when we know they're supported by the domain 1391 * (which is to say, when they share the domain name of the current request). 1392 */ 1393 if ( is_ssl() && ! str_starts_with( $image_baseurl, 'https' ) ) { 1394 /* 1395 * Since the `Host:` header might contain a port, it should 1396 * be compared against the image URL using the same port. 1397 */ 1398 $parsed = parse_url( $image_baseurl ); 1399 $domain = isset( $parsed['host'] ) ? $parsed['host'] : ''; 1400 1401 if ( isset( $parsed['port'] ) ) { 1402 $domain .= ':' . $parsed['port']; 1403 } 1404 1405 if ( $_SERVER['HTTP_HOST'] === $domain ) { 1406 $image_baseurl = set_url_scheme( $image_baseurl, 'https' ); 1407 } 1408 } 1409 1410 /* 1411 * Images that have been edited in WordPress after being uploaded will 1412 * contain a unique hash. Look for that hash and use it later to filter 1413 * out images that are leftovers from previous versions. 1414 */ 1415 $image_edited = preg_match( '/-e[0-9]{13}/', wp_basename( $image_src ), $image_edit_hash ); 1416 1417 /** 1418 * Filters the maximum image width to be included in a 'srcset' attribute. 1419 * 1420 * @since 4.4.0 1421 * 1422 * @param int $max_width The maximum image width to be included in the 'srcset'. Default '2048'. 1423 * @param int[] $size_array { 1424 * An array of requested width and height values. 1425 * 1426 * @type int $0 The width in pixels. 1427 * @type int $1 The height in pixels. 1428 * } 1429 */ 1430 $max_srcset_image_width = apply_filters( 'max_srcset_image_width', 2048, $size_array ); 1431 1432 // Array to hold URL candidates. 1433 $sources = array(); 1434 1435 /** 1436 * To make sure the ID matches our image src, we will check to see if any sizes in our attachment 1437 * meta match our $image_src. If no matches are found we don't return a srcset to avoid serving 1438 * an incorrect image. See #35045. 1439 */ 1440 $src_matched = false; 1441 1442 /* 1443 * Loop through available images. Only use images that are resized 1444 * versions of the same edit. 1445 */ 1446 foreach ( $image_sizes as $image ) { 1447 $is_src = false; 1448 1449 // Check if image meta isn't corrupted. 1450 if ( ! is_array( $image ) ) { 1451 continue; 1452 } 1453 1454 // If the file name is part of the `src`, we've confirmed a match. 1455 if ( ! $src_matched && str_contains( $image_src, $dirname . $image['file'] ) ) { 1456 $src_matched = true; 1457 $is_src = true; 1458 } 1459 1460 // Filter out images that are from previous edits. 1461 if ( $image_edited && ! strpos( $image['file'], $image_edit_hash[0] ) ) { 1462 continue; 1463 } 1464 1465 /* 1466 * Filters out images that are wider than '$max_srcset_image_width' unless 1467 * that file is in the 'src' attribute. 1468 */ 1469 if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width && ! $is_src ) { 1470 continue; 1471 } 1472 1473 // If the image dimensions are within 1px of the expected size, use it. 1474 if ( wp_image_matches_ratio( $image_width, $image_height, $image['width'], $image['height'] ) ) { 1475 // Add the URL, descriptor, and value to the sources array to be returned. 1476 $source = array( 1477 'url' => $image_baseurl . $image['file'], 1478 'descriptor' => 'w', 1479 'value' => $image['width'], 1480 ); 1481 1482 // The 'src' image has to be the first in the 'srcset', because of a bug in iOS8. See #35030. 1483 if ( $is_src ) { 1484 $sources = array( $image['width'] => $source ) + $sources; 1485 } else { 1486 $sources[ $image['width'] ] = $source; 1487 } 1488 } 1489 } 1490 1491 /** 1492 * Filters an image's 'srcset' sources. 1493 * 1494 * @since 4.4.0 1495 * 1496 * @param array $sources { 1497 * One or more arrays of source data to include in the 'srcset'. 1498 * 1499 * @type array $width { 1500 * @type string $url The URL of an image source. 1501 * @type string $descriptor The descriptor type used in the image candidate string, 1502 * either 'w' or 'x'. 1503 * @type int $value The source width if paired with a 'w' descriptor, or a 1504 * pixel density value if paired with an 'x' descriptor. 1505 * } 1506 * } 1507 * @param array $size_array { 1508 * An array of requested width and height values. 1509 * 1510 * @type int $0 The width in pixels. 1511 * @type int $1 The height in pixels. 1512 * } 1513 * @param string $image_src The 'src' of the image. 1514 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1515 * @param int $attachment_id Image attachment ID or 0. 1516 */ 1517 $sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id ); 1518 1519 // Only return a 'srcset' value if there is more than one source. 1520 if ( ! $src_matched || ! is_array( $sources ) || count( $sources ) < 2 ) { 1521 return false; 1522 } 1523 1524 $srcset = ''; 1525 1526 foreach ( $sources as $source ) { 1527 $srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', '; 1528 } 1529 1530 return rtrim( $srcset, ', ' ); 1531 } 1532 1533 /** 1534 * Retrieves the value for an image attachment's 'sizes' attribute. 1535 * 1536 * @since 4.4.0 1537 * 1538 * @see wp_calculate_image_sizes() 1539 * 1540 * @param int $attachment_id Image attachment ID. 1541 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of 1542 * width and height values in pixels (in that order). Default 'medium'. 1543 * @param array|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. 1544 * Default null. 1545 * @return string|false A valid source size value for use in a 'sizes' attribute or false. 1546 */ 1547 function wp_get_attachment_image_sizes( $attachment_id, $size = 'medium', $image_meta = null ) { 1548 $image = wp_get_attachment_image_src( $attachment_id, $size ); 1549 1550 if ( ! $image ) { 1551 return false; 1552 } 1553 1554 if ( ! is_array( $image_meta ) ) { 1555 $image_meta = wp_get_attachment_metadata( $attachment_id ); 1556 } 1557 1558 $image_src = $image[0]; 1559 $size_array = array( 1560 absint( $image[1] ), 1561 absint( $image[2] ), 1562 ); 1563 1564 return wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id ); 1565 } 1566 1567 /** 1568 * Creates a 'sizes' attribute value for an image. 1569 * 1570 * @since 4.4.0 1571 * 1572 * @param string|int[] $size Image size. Accepts any registered image size name, or an array of 1573 * width and height values in pixels (in that order). 1574 * @param string|null $image_src Optional. The URL to the image file. Default null. 1575 * @param array|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. 1576 * Default null. 1577 * @param int $attachment_id Optional. Image attachment ID. Either `$image_meta` or `$attachment_id` 1578 * is needed when using the image size name as argument for `$size`. Default 0. 1579 * @return string|false A valid source size value for use in a 'sizes' attribute or false. 1580 */ 1581 function wp_calculate_image_sizes( $size, $image_src = null, $image_meta = null, $attachment_id = 0 ) { 1582 $width = 0; 1583 1584 if ( is_array( $size ) ) { 1585 $width = absint( $size[0] ); 1586 } elseif ( is_string( $size ) ) { 1587 if ( ! $image_meta && $attachment_id ) { 1588 $image_meta = wp_get_attachment_metadata( $attachment_id ); 1589 } 1590 1591 if ( is_array( $image_meta ) ) { 1592 $size_array = _wp_get_image_size_from_meta( $size, $image_meta ); 1593 if ( $size_array ) { 1594 $width = absint( $size_array[0] ); 1595 } 1596 } 1597 } 1598 1599 if ( ! $width ) { 1600 return false; 1601 } 1602 1603 // Setup the default 'sizes' attribute. 1604 $sizes = sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width ); 1605 1606 /** 1607 * Filters the output of 'wp_calculate_image_sizes()'. 1608 * 1609 * @since 4.4.0 1610 * 1611 * @param string $sizes A source size value for use in a 'sizes' attribute. 1612 * @param string|int[] $size Requested image size. Can be any registered image size name, or 1613 * an array of width and height values in pixels (in that order). 1614 * @param string|null $image_src The URL to the image file or null. 1615 * @param array|null $image_meta The image meta data as returned by wp_get_attachment_metadata() or null. 1616 * @param int $attachment_id Image attachment ID of the original image or 0. 1617 */ 1618 return apply_filters( 'wp_calculate_image_sizes', $sizes, $size, $image_src, $image_meta, $attachment_id ); 1619 } 1620 1621 /** 1622 * Determines if the image meta data is for the image source file. 1623 * 1624 * The image meta data is retrieved by attachment post ID. In some cases the post IDs may change. 1625 * For example when the website is exported and imported at another website. Then the 1626 * attachment post IDs that are in post_content for the exported website may not match 1627 * the same attachments at the new website. 1628 * 1629 * @since 5.5.0 1630 * 1631 * @param string $image_location The full path or URI to the image file. 1632 * @param array $image_meta The attachment meta data as returned by 'wp_get_attachment_metadata()'. 1633 * @param int $attachment_id Optional. The image attachment ID. Default 0. 1634 * @return bool Whether the image meta is for this image file. 1635 */ 1636 function wp_image_file_matches_image_meta( $image_location, $image_meta, $attachment_id = 0 ) { 1637 $match = false; 1638 1639 // Ensure the $image_meta is valid. 1640 if ( isset( $image_meta['file'] ) && strlen( $image_meta['file'] ) > 4 ) { 1641 // Remove query args in image URI. 1642 list( $image_location ) = explode( '?', $image_location ); 1643 1644 // Check if the relative image path from the image meta is at the end of $image_location. 1645 if ( strrpos( $image_location, $image_meta['file'] ) === strlen( $image_location ) - strlen( $image_meta['file'] ) ) { 1646 $match = true; 1647 } else { 1648 // Retrieve the uploads sub-directory from the full size image. 1649 $dirname = _wp_get_attachment_relative_path( $image_meta['file'] ); 1650 1651 if ( $dirname ) { 1652 $dirname = trailingslashit( $dirname ); 1653 } 1654 1655 if ( ! empty( $image_meta['original_image'] ) ) { 1656 $relative_path = $dirname . $image_meta['original_image']; 1657 1658 if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) { 1659 $match = true; 1660 } 1661 } 1662 1663 if ( ! $match && ! empty( $image_meta['sizes'] ) ) { 1664 foreach ( $image_meta['sizes'] as $image_size_data ) { 1665 $relative_path = $dirname . $image_size_data['file']; 1666 1667 if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) { 1668 $match = true; 1669 break; 1670 } 1671 } 1672 } 1673 } 1674 } 1675 1676 /** 1677 * Filters whether an image path or URI matches image meta. 1678 * 1679 * @since 5.5.0 1680 * 1681 * @param bool $match Whether the image relative path from the image meta 1682 * matches the end of the URI or path to the image file. 1683 * @param string $image_location Full path or URI to the tested image file. 1684 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1685 * @param int $attachment_id The image attachment ID or 0 if not supplied. 1686 */ 1687 return apply_filters( 'wp_image_file_matches_image_meta', $match, $image_location, $image_meta, $attachment_id ); 1688 } 1689 1690 /** 1691 * Determines an image's width and height dimensions based on the source file. 1692 * 1693 * @since 5.5.0 1694 * 1695 * @param string $image_src The image source file. 1696 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1697 * @param int $attachment_id Optional. The image attachment ID. Default 0. 1698 * @return array|false Array with first element being the width and second element being the height, 1699 * or false if dimensions cannot be determined. 1700 */ 1701 function wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id = 0 ) { 1702 $dimensions = false; 1703 1704 // Is it a full size image? 1705 if ( 1706 isset( $image_meta['file'] ) && 1707 str_contains( $image_src, wp_basename( $image_meta['file'] ) ) 1708 ) { 1709 $dimensions = array( 1710 (int) $image_meta['width'], 1711 (int) $image_meta['height'], 1712 ); 1713 } 1714 1715 if ( ! $dimensions && ! empty( $image_meta['sizes'] ) ) { 1716 $src_filename = wp_basename( $image_src ); 1717 1718 foreach ( $image_meta['sizes'] as $image_size_data ) { 1719 if ( $src_filename === $image_size_data['file'] ) { 1720 $dimensions = array( 1721 (int) $image_size_data['width'], 1722 (int) $image_size_data['height'], 1723 ); 1724 1725 break; 1726 } 1727 } 1728 } 1729 1730 /** 1731 * Filters the 'wp_image_src_get_dimensions' value. 1732 * 1733 * @since 5.7.0 1734 * 1735 * @param array|false $dimensions Array with first element being the width 1736 * and second element being the height, or 1737 * false if dimensions could not be determined. 1738 * @param string $image_src The image source file. 1739 * @param array $image_meta The image meta data as returned by 1740 * 'wp_get_attachment_metadata()'. 1741 * @param int $attachment_id The image attachment ID. Default 0. 1742 */ 1743 return apply_filters( 'wp_image_src_get_dimensions', $dimensions, $image_src, $image_meta, $attachment_id ); 1744 } 1745 1746 /** 1747 * Adds 'srcset' and 'sizes' attributes to an existing 'img' element. 1748 * 1749 * @since 4.4.0 1750 * 1751 * @see wp_calculate_image_srcset() 1752 * @see wp_calculate_image_sizes() 1753 * 1754 * @param string $image An HTML 'img' element to be filtered. 1755 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. 1756 * @param int $attachment_id Image attachment ID. 1757 * @return string Converted 'img' element with 'srcset' and 'sizes' attributes added. 1758 */ 1759 function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) { 1760 // Ensure the image meta exists. 1761 if ( empty( $image_meta['sizes'] ) ) { 1762 return $image; 1763 } 1764 1765 $image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : ''; 1766 list( $image_src ) = explode( '?', $image_src ); 1767 1768 // Return early if we couldn't get the image source. 1769 if ( ! $image_src ) { 1770 return $image; 1771 } 1772 1773 // Bail early if an image has been inserted and later edited. 1774 if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash ) 1775 && ! str_contains( wp_basename( $image_src ), $img_edit_hash[0] ) 1776 ) { 1777 return $image; 1778 } 1779 1780 $width = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0; 1781 $height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0; 1782 1783 if ( $width && $height ) { 1784 $size_array = array( $width, $height ); 1785 } else { 1786 $size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id ); 1787 if ( ! $size_array ) { 1788 return $image; 1789 } 1790 } 1791 1792 $srcset = wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id ); 1793 1794 if ( $srcset ) { 1795 // Check if there is already a 'sizes' attribute. 1796 $sizes = strpos( $image, ' sizes=' ); 1797 1798 if ( ! $sizes ) { 1799 $sizes = wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id ); 1800 } 1801 } 1802 1803 if ( $srcset && $sizes ) { 1804 // Format the 'srcset' and 'sizes' string and escape attributes. 1805 $attr = sprintf( ' srcset="%s"', esc_attr( $srcset ) ); 1806 1807 if ( is_string( $sizes ) ) { 1808 $attr .= sprintf( ' sizes="%s"', esc_attr( $sizes ) ); 1809 } 1810 1811 // Add the srcset and sizes attributes to the image markup. 1812 return preg_replace( '/<img ([^>]+?)[\/ ]*>/', '<img $1' . $attr . ' />', $image ); 1813 } 1814 1815 return $image; 1816 } 1817 1818 /** 1819 * Determines whether to add the `loading` attribute to the specified tag in the specified context. 1820 * 1821 * @since 5.5.0 1822 * @since 5.7.0 Now returns `true` by default for `iframe` tags. 1823 * 1824 * @param string $tag_name The tag name. 1825 * @param string $context Additional context, like the current filter name 1826 * or the function name from where this was called. 1827 * @return bool Whether to add the attribute. 1828 */ 1829 function wp_lazy_loading_enabled( $tag_name, $context ) { 1830 /* 1831 * By default add to all 'img' and 'iframe' tags. 1832 * See https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-loading 1833 * See https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-loading 1834 */ 1835 $default = ( 'img' === $tag_name || 'iframe' === $tag_name ); 1836 1837 /** 1838 * Filters whether to add the `loading` attribute to the specified tag in the specified context. 1839 * 1840 * @since 5.5.0 1841 * 1842 * @param bool $default Default value. 1843 * @param string $tag_name The tag name. 1844 * @param string $context Additional context, like the current filter name 1845 * or the function name from where this was called. 1846 */ 1847 return (bool) apply_filters( 'wp_lazy_loading_enabled', $default, $tag_name, $context ); 1848 } 1849 1850 /** 1851 * Filters specific tags in post content and modifies their markup. 1852 * 1853 * Modifies HTML tags in post content to include new browser and HTML technologies 1854 * that may not have existed at the time of post creation. These modifications currently 1855 * include adding `srcset`, `sizes`, and `loading` attributes to `img` HTML tags, as well 1856 * as adding `loading` attributes to `iframe` HTML tags. 1857 * Future similar optimizations should be added/expected here. 1858 * 1859 * @since 5.5.0 1860 * @since 5.7.0 Now supports adding `loading` attributes to `iframe` tags. 1861 * 1862 * @see wp_img_tag_add_width_and_height_attr() 1863 * @see wp_img_tag_add_srcset_and_sizes_attr() 1864 * @see wp_img_tag_add_loading_optimization_attrs() 1865 * @see wp_iframe_tag_add_loading_attr() 1866 * 1867 * @param string $content The HTML content to be filtered. 1868 * @param string $context Optional. Additional context to pass to the filters. 1869 * Defaults to `current_filter()` when not set. 1870 * @return string Converted content with images modified. 1871 */ 1872 function wp_filter_content_tags( $content, $context = null ) { 1873 if ( null === $context ) { 1874 $context = current_filter(); 1875 } 1876 1877 $add_iframe_loading_attr = wp_lazy_loading_enabled( 'iframe', $context ); 1878 1879 if ( ! preg_match_all( '/<(img|iframe)\s[^>]+>/', $content, $matches, PREG_SET_ORDER ) ) { 1880 return $content; 1881 } 1882 1883 // List of the unique `img` tags found in $content. 1884 $images = array(); 1885 1886 // List of the unique `iframe` tags found in $content. 1887 $iframes = array(); 1888 1889 foreach ( $matches as $match ) { 1890 list( $tag, $tag_name ) = $match; 1891 1892 switch ( $tag_name ) { 1893 case 'img': 1894 if ( preg_match( '/wp-image-([0-9]+)/i', $tag, $class_id ) ) { 1895 $attachment_id = absint( $class_id[1] ); 1896 1897 if ( $attachment_id ) { 1898 /* 1899 * If exactly the same image tag is used more than once, overwrite it. 1900 * All identical tags will be replaced later with 'str_replace()'. 1901 */ 1902 $images[ $tag ] = $attachment_id; 1903 break; 1904 } 1905 } 1906 $images[ $tag ] = 0; 1907 break; 1908 case 'iframe': 1909 $iframes[ $tag ] = 0; 1910 break; 1911 } 1912 } 1913 1914 // Reduce the array to unique attachment IDs. 1915 $attachment_ids = array_unique( array_filter( array_values( $images ) ) ); 1916 1917 if ( count( $attachment_ids ) > 1 ) { 1918 /* 1919 * Warm the object cache with post and meta information for all found 1920 * images to avoid making individual database calls. 1921 */ 1922 _prime_post_caches( $attachment_ids, false, true ); 1923 } 1924 1925 // Iterate through the matches in order of occurrence as it is relevant for whether or not to lazy-load. 1926 foreach ( $matches as $match ) { 1927 // Filter an image match. 1928 if ( isset( $images[ $match[0] ] ) ) { 1929 $filtered_image = $match[0]; 1930 $attachment_id = $images[ $match[0] ]; 1931 1932 // Add 'width' and 'height' attributes if applicable. 1933 if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' width=' ) && ! str_contains( $filtered_image, ' height=' ) ) { 1934 $filtered_image = wp_img_tag_add_width_and_height_attr( $filtered_image, $context, $attachment_id ); 1935 } 1936 1937 // Add 'srcset' and 'sizes' attributes if applicable. 1938 if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' srcset=' ) ) { 1939 $filtered_image = wp_img_tag_add_srcset_and_sizes_attr( $filtered_image, $context, $attachment_id ); 1940 } 1941 1942 // Add loading optimization attributes if applicable. 1943 $filtered_image = wp_img_tag_add_loading_optimization_attrs( $filtered_image, $context ); 1944 1945 // Adds 'auto' to the sizes attribute if applicable. 1946 $filtered_image = wp_img_tag_add_auto_sizes( $filtered_image ); 1947 1948 /** 1949 * Filters an img tag within the content for a given context. 1950 * 1951 * @since 6.0.0 1952 * 1953 * @param string $filtered_image Full img tag with attributes that will replace the source img tag. 1954 * @param string $context Additional context, like the current filter name or the function name from where this was called. 1955 * @param int $attachment_id The image attachment ID. May be 0 in case the image is not an attachment. 1956 */ 1957 $filtered_image = apply_filters( 'wp_content_img_tag', $filtered_image, $context, $attachment_id ); 1958 1959 if ( $filtered_image !== $match[0] ) { 1960 $content = str_replace( $match[0], $filtered_image, $content ); 1961 } 1962 1963 /* 1964 * Unset image lookup to not run the same logic again unnecessarily if the same image tag is used more than 1965 * once in the same blob of content. 1966 */ 1967 unset( $images[ $match[0] ] ); 1968 } 1969 1970 // Filter an iframe match. 1971 if ( isset( $iframes[ $match[0] ] ) ) { 1972 $filtered_iframe = $match[0]; 1973 1974 // Add 'loading' attribute if applicable. 1975 if ( $add_iframe_loading_attr && ! str_contains( $filtered_iframe, ' loading=' ) ) { 1976 $filtered_iframe = wp_iframe_tag_add_loading_attr( $filtered_iframe, $context ); 1977 } 1978 1979 if ( $filtered_iframe !== $match[0] ) { 1980 $content = str_replace( $match[0], $filtered_iframe, $content ); 1981 } 1982 1983 /* 1984 * Unset iframe lookup to not run the same logic again unnecessarily if the same iframe tag is used more 1985 * than once in the same blob of content. 1986 */ 1987 unset( $iframes[ $match[0] ] ); 1988 } 1989 } 1990 1991 return $content; 1992 } 1993 1994 /** 1995 * Adds 'auto' to the sizes attribute to the image, if the image is lazy loaded and does not already include it. 1996 * 1997 * @since 6.7.0 1998 * 1999 * @param string $image The image tag markup being filtered. 2000 * @return string The filtered image tag markup. 2001 */ 2002 function wp_img_tag_add_auto_sizes( string $image ): string { 2003 /** 2004 * Filters whether auto-sizes for lazy loaded images is enabled. 2005 * 2006 * @since 6.7.1 2007 * 2008 * @param boolean $enabled Whether auto-sizes for lazy loaded images is enabled. 2009 */ 2010 if ( ! apply_filters( 'wp_img_tag_add_auto_sizes', true ) ) { 2011 return $image; 2012 } 2013 2014 $processor = new WP_HTML_Tag_Processor( $image ); 2015 2016 // Bail if there is no IMG tag. 2017 if ( ! $processor->next_tag( array( 'tag_name' => 'IMG' ) ) ) { 2018 return $image; 2019 } 2020 2021 // Bail early if the image is not lazy-loaded. 2022 $loading = $processor->get_attribute( 'loading' ); 2023 if ( ! is_string( $loading ) || 'lazy' !== strtolower( trim( $loading, " \t\f\r\n" ) ) ) { 2024 return $image; 2025 } 2026 2027 /* 2028 * Bail early if the image doesn't have a width attribute. 2029 * Per WordPress Core itself, lazy-loaded images should always have a width attribute. 2030 * However, it is possible that lazy-loading could be added by a plugin, where we don't have that guarantee. 2031 * As such, it still makes sense to ensure presence of a width attribute here in order to use `sizes=auto`. 2032 */ 2033 $width = $processor->get_attribute( 'width' ); 2034 if ( ! is_string( $width ) || '' === $width ) { 2035 return $image; 2036 } 2037 2038 $sizes = $processor->get_attribute( 'sizes' ); 2039 2040 // Bail early if the image is not responsive. 2041 if ( ! is_string( $sizes ) ) { 2042 return $image; 2043 } 2044 2045 // Don't add 'auto' to the sizes attribute if it already exists. 2046 if ( wp_sizes_attribute_includes_valid_auto( $sizes ) ) { 2047 return $image; 2048 } 2049 2050 $processor->set_attribute( 'sizes', "auto, $sizes" ); 2051 return $processor->get_updated_html(); 2052 } 2053 2054 /** 2055 * Checks whether the given 'sizes' attribute includes the 'auto' keyword as the first item in the list. 2056 * 2057 * Per the HTML spec, if present it must be the first entry. 2058 * 2059 * @since 6.7.0 2060 * 2061 * @param string $sizes_attr The 'sizes' attribute value. 2062 * @return bool True if the 'auto' keyword is present, false otherwise. 2063 */ 2064 function wp_sizes_attribute_includes_valid_auto( string $sizes_attr ): bool { 2065 list( $first_size ) = explode( ',', $sizes_attr, 2 ); 2066 return 'auto' === strtolower( trim( $first_size, " \t\f\r\n" ) ); 2067 } 2068 2069 /** 2070 * Prints a CSS rule to fix potential visual issues with images using `sizes=auto`. 2071 * 2072 * This rule overrides the similar rule in the default user agent stylesheet, to avoid images that use e.g. 2073 * `width: auto` or `width: fit-content` to appear smaller. 2074 * 2075 * @since 6.7.1 2076 * @see https://html.spec.whatwg.org/multipage/rendering.html#img-contain-size 2077 * @see https://core.trac.wordpress.org/ticket/62413 2078 */ 2079 function wp_print_auto_sizes_contain_css_fix() { 2080 /** This filter is documented in wp-includes/media.php */ 2081 $add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true ); 2082 if ( ! $add_auto_sizes ) { 2083 return; 2084 } 2085 2086 ?> 2087 <style>img:is([sizes="auto" i], [sizes^="auto," i]) { contain-intrinsic-size: 3000px 1500px }</style> 2088 <?php 2089 } 2090 2091 /** 2092 * Adds optimization attributes to an `img` HTML tag. 2093 * 2094 * @since 6.3.0 2095 * 2096 * @param string $image The HTML `img` tag where the attribute should be added. 2097 * @param string $context Additional context to pass to the filters. 2098 * @return string Converted `img` tag with optimization attributes added. 2099 */ 2100 function wp_img_tag_add_loading_optimization_attrs( $image, $context ) { 2101 $src = preg_match( '/ src=["\']?([^"\']*)/i', $image, $matche_src ) ? $matche_src[1] : null; 2102 $width = preg_match( '/ width=["\']([0-9]+)["\']/', $image, $match_width ) ? (int) $match_width[1] : null; 2103 $height = preg_match( '/ height=["\']([0-9]+)["\']/', $image, $match_height ) ? (int) $match_height[1] : null; 2104 $loading_val = preg_match( '/ loading=["\']([A-Za-z]+)["\']/', $image, $match_loading ) ? $match_loading[1] : null; 2105 $fetchpriority_val = preg_match( '/ fetchpriority=["\']([A-Za-z]+)["\']/', $image, $match_fetchpriority ) ? $match_fetchpriority[1] : null; 2106 $decoding_val = preg_match( '/ decoding=["\']([A-Za-z]+)["\']/', $image, $match_decoding ) ? $match_decoding[1] : null; 2107 2108 /* 2109 * Get loading optimization attributes to use. 2110 * This must occur before the conditional check below so that even images 2111 * that are ineligible for being lazy-loaded are considered. 2112 */ 2113 $optimization_attrs = wp_get_loading_optimization_attributes( 2114 'img', 2115 array( 2116 'src' => $src, 2117 'width' => $width, 2118 'height' => $height, 2119 'loading' => $loading_val, 2120 'fetchpriority' => $fetchpriority_val, 2121 'decoding' => $decoding_val, 2122 ), 2123 $context 2124 ); 2125 2126 // Images should have source for the loading optimization attributes to be added. 2127 if ( ! str_contains( $image, ' src="' ) ) { 2128 return $image; 2129 } 2130 2131 if ( empty( $decoding_val ) ) { 2132 /** 2133 * Filters the `decoding` attribute value to add to an image. Default `async`. 2134 * 2135 * Returning a falsey value will omit the attribute. 2136 * 2137 * @since 6.1.0 2138 * 2139 * @param string|false|null $value The `decoding` attribute value. Returning a falsey value 2140 * will result in the attribute being omitted for the image. 2141 * Otherwise, it may be: 'async', 'sync', or 'auto'. Defaults to false. 2142 * @param string $image The HTML `img` tag to be filtered. 2143 * @param string $context Additional context about how the function was called 2144 * or where the img tag is. 2145 */ 2146 $filtered_decoding_attr = apply_filters( 2147 'wp_img_tag_add_decoding_attr', 2148 isset( $optimization_attrs['decoding'] ) ? $optimization_attrs['decoding'] : false, 2149 $image, 2150 $context 2151 ); 2152 2153 // Validate the values after filtering. 2154 if ( isset( $optimization_attrs['decoding'] ) && ! $filtered_decoding_attr ) { 2155 // Unset `decoding` attribute if `$filtered_decoding_attr` is set to `false`. 2156 unset( $optimization_attrs['decoding'] ); 2157 } elseif ( in_array( $filtered_decoding_attr, array( 'async', 'sync', 'auto' ), true ) ) { 2158 $optimization_attrs['decoding'] = $filtered_decoding_attr; 2159 } 2160 2161 if ( ! empty( $optimization_attrs['decoding'] ) ) { 2162 $image = str_replace( '<img', '<img decoding="' . esc_attr( $optimization_attrs['decoding'] ) . '"', $image ); 2163 } 2164 } 2165 2166 // Images should have dimension attributes for the 'loading' and 'fetchpriority' attributes to be added. 2167 if ( ! str_contains( $image, ' width="' ) || ! str_contains( $image, ' height="' ) ) { 2168 return $image; 2169 } 2170 2171 // Retained for backward compatibility. 2172 $loading_attrs_enabled = wp_lazy_loading_enabled( 'img', $context ); 2173 2174 if ( empty( $loading_val ) && $loading_attrs_enabled ) { 2175 /** 2176 * Filters the `loading` attribute value to add to an image. Default `lazy`. 2177 * 2178 * Returning `false` or an empty string will not add the attribute. 2179 * Returning `true` will add the default value. 2180 * 2181 * @since 5.5.0 2182 * 2183 * @param string|bool $value The `loading` attribute value. Returning a falsey value will result in 2184 * the attribute being omitted for the image. 2185 * @param string $image The HTML `img` tag to be filtered. 2186 * @param string $context Additional context about how the function was called or where the img tag is. 2187 */ 2188 $filtered_loading_attr = apply_filters( 2189 'wp_img_tag_add_loading_attr', 2190 isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false, 2191 $image, 2192 $context 2193 ); 2194 2195 // Validate the values after filtering. 2196 if ( isset( $optimization_attrs['loading'] ) && ! $filtered_loading_attr ) { 2197 // Unset `loading` attributes if `$filtered_loading_attr` is set to `false`. 2198 unset( $optimization_attrs['loading'] ); 2199 } elseif ( in_array( $filtered_loading_attr, array( 'lazy', 'eager' ), true ) ) { 2200 /* 2201 * If the filter changed the loading attribute to "lazy" when a fetchpriority attribute 2202 * with value "high" is already present, trigger a warning since those two attribute 2203 * values should be mutually exclusive. 2204 * 2205 * The same warning is present in `wp_get_loading_optimization_attributes()`, and here it 2206 * is only intended for the specific scenario where the above filtered caused the problem. 2207 */ 2208 if ( isset( $optimization_attrs['fetchpriority'] ) && 'high' === $optimization_attrs['fetchpriority'] && 2209 ( isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false ) !== $filtered_loading_attr && 2210 'lazy' === $filtered_loading_attr 2211 ) { 2212 _doing_it_wrong( 2213 __FUNCTION__, 2214 __( 'An image should not be lazy-loaded and marked as high priority at the same time.' ), 2215 '6.3.0' 2216 ); 2217 } 2218 2219 // The filtered value will still be respected. 2220 $optimization_attrs['loading'] = $filtered_loading_attr; 2221 } 2222 2223 if ( ! empty( $optimization_attrs['loading'] ) ) { 2224 $image = str_replace( '<img', '<img loading="' . esc_attr( $optimization_attrs['loading'] ) . '"', $image ); 2225 } 2226 } 2227 2228 if ( empty( $fetchpriority_val ) && ! empty( $optimization_attrs['fetchpriority'] ) ) { 2229 $image = str_replace( '<img', '<img fetchpriority="' . esc_attr( $optimization_attrs['fetchpriority'] ) . '"', $image ); 2230 } 2231 2232 return $image; 2233 } 2234 2235 /** 2236 * Adds `width` and `height` attributes to an `img` HTML tag. 2237 * 2238 * @since 5.5.0 2239 * 2240 * @param string $image The HTML `img` tag where the attribute should be added. 2241 * @param string $context Additional context to pass to the filters. 2242 * @param int $attachment_id Image attachment ID. 2243 * @return string Converted 'img' element with 'width' and 'height' attributes added. 2244 */ 2245 function wp_img_tag_add_width_and_height_attr( $image, $context, $attachment_id ) { 2246 $image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : ''; 2247 list( $image_src ) = explode( '?', $image_src ); 2248 2249 // Return early if we couldn't get the image source. 2250 if ( ! $image_src ) { 2251 return $image; 2252 } 2253 2254 /** 2255 * Filters whether to add the missing `width` and `height` HTML attributes to the img tag. Default `true`. 2256 * 2257 * Returning anything else than `true` will not add the attributes. 2258 * 2259 * @since 5.5.0 2260 * 2261 * @param bool $value The filtered value, defaults to `true`. 2262 * @param string $image The HTML `img` tag where the attribute should be added. 2263 * @param string $context Additional context about how the function was called or where the img tag is. 2264 * @param int $attachment_id The image attachment ID. 2265 */ 2266 $add = apply_filters( 'wp_img_tag_add_width_and_height_attr', true, $image, $context, $attachment_id ); 2267 2268 if ( true === $add ) { 2269 $image_meta = wp_get_attachment_metadata( $attachment_id ); 2270 $size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id ); 2271 2272 if ( $size_array && $size_array[0] && $size_array[1] ) { 2273 // If the width is enforced through style (e.g. in an inline image), calculate the dimension attributes. 2274 $style_width = preg_match( '/style="width:\s*(\d+)px;"/', $image, $match_width ) ? (int) $match_width[1] : 0; 2275 if ( $style_width ) { 2276 $size_array[1] = (int) round( $size_array[1] * $style_width / $size_array[0] ); 2277 $size_array[0] = $style_width; 2278 } 2279 2280 $hw = trim( image_hwstring( $size_array[0], $size_array[1] ) ); 2281 return str_replace( '<img', "<img {$hw}", $image ); 2282 } 2283 } 2284 2285 return $image; 2286 } 2287 2288 /** 2289 * Adds `srcset` and `sizes` attributes to an existing `img` HTML tag. 2290 * 2291 * @since 5.5.0 2292 * 2293 * @param string $image The HTML `img` tag where the attribute should be added. 2294 * @param string $context Additional context to pass to the filters. 2295 * @param int $attachment_id Image attachment ID. 2296 * @return string Converted 'img' element with 'loading' attribute added. 2297 */ 2298 function wp_img_tag_add_srcset_and_sizes_attr( $image, $context, $attachment_id ) { 2299 /** 2300 * Filters whether to add the `srcset` and `sizes` HTML attributes to the img tag. Default `true`. 2301 * 2302 * Returning anything else than `true` will not add the attributes. 2303 * 2304 * @since 5.5.0 2305 * 2306 * @param bool $value The filtered value, defaults to `true`. 2307 * @param string $image The HTML `img` tag where the attribute should be added. 2308 * @param string $context Additional context about how the function was called or where the img tag is. 2309 * @param int $attachment_id The image attachment ID. 2310 */ 2311 $add = apply_filters( 'wp_img_tag_add_srcset_and_sizes_attr', true, $image, $context, $attachment_id ); 2312 2313 if ( true === $add ) { 2314 $image_meta = wp_get_attachment_metadata( $attachment_id ); 2315 return wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ); 2316 } 2317 2318 return $image; 2319 } 2320 2321 /** 2322 * Adds `loading` attribute to an `iframe` HTML tag. 2323 * 2324 * @since 5.7.0 2325 * 2326 * @param string $iframe The HTML `iframe` tag where the attribute should be added. 2327 * @param string $context Additional context to pass to the filters. 2328 * @return string Converted `iframe` tag with `loading` attribute added. 2329 */ 2330 function wp_iframe_tag_add_loading_attr( $iframe, $context ) { 2331 /* 2332 * Get loading attribute value to use. This must occur before the conditional check below so that even iframes that 2333 * are ineligible for being lazy-loaded are considered. 2334 */ 2335 $optimization_attrs = wp_get_loading_optimization_attributes( 2336 'iframe', 2337 array( 2338 /* 2339 * The concrete values for width and height are not important here for now 2340 * since fetchpriority is not yet supported for iframes. 2341 * TODO: Use WP_HTML_Tag_Processor to extract actual values once support is 2342 * added. 2343 */ 2344 'width' => str_contains( $iframe, ' width="' ) ? 100 : null, 2345 'height' => str_contains( $iframe, ' height="' ) ? 100 : null, 2346 // This function is never called when a 'loading' attribute is already present. 2347 'loading' => null, 2348 ), 2349 $context 2350 ); 2351 2352 // Iframes should have source and dimension attributes for the `loading` attribute to be added. 2353 if ( ! str_contains( $iframe, ' src="' ) || ! str_contains( $iframe, ' width="' ) || ! str_contains( $iframe, ' height="' ) ) { 2354 return $iframe; 2355 } 2356 2357 $value = isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false; 2358 2359 /** 2360 * Filters the `loading` attribute value to add to an iframe. Default `lazy`. 2361 * 2362 * Returning `false` or an empty string will not add the attribute. 2363 * Returning `true` will add the default value. 2364 * 2365 * @since 5.7.0 2366 * 2367 * @param string|bool $value The `loading` attribute value. Returning a falsey value will result in 2368 * the attribute being omitted for the iframe. 2369 * @param string $iframe The HTML `iframe` tag to be filtered. 2370 * @param string $context Additional context about how the function was called or where the iframe tag is. 2371 */ 2372 $value = apply_filters( 'wp_iframe_tag_add_loading_attr', $value, $iframe, $context ); 2373 2374 if ( $value ) { 2375 if ( ! in_array( $value, array( 'lazy', 'eager' ), true ) ) { 2376 $value = 'lazy'; 2377 } 2378 2379 return str_replace( '<iframe', '<iframe loading="' . esc_attr( $value ) . '"', $iframe ); 2380 } 2381 2382 return $iframe; 2383 } 2384 2385 /** 2386 * Adds a 'wp-post-image' class to post thumbnails. Internal use only. 2387 * 2388 * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'} 2389 * action hooks to dynamically add/remove itself so as to only filter post thumbnails. 2390 * 2391 * @ignore 2392 * @since 2.9.0 2393 * 2394 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. 2395 * @return string[] Modified array of attributes including the new 'wp-post-image' class. 2396 */ 2397 function _wp_post_thumbnail_class_filter( $attr ) { 2398 $attr['class'] .= ' wp-post-image'; 2399 return $attr; 2400 } 2401 2402 /** 2403 * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes' 2404 * filter hook. Internal use only. 2405 * 2406 * @ignore 2407 * @since 2.9.0 2408 * 2409 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. 2410 */ 2411 function _wp_post_thumbnail_class_filter_add( $attr ) { 2412 add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); 2413 } 2414 2415 /** 2416 * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes' 2417 * filter hook. Internal use only. 2418 * 2419 * @ignore 2420 * @since 2.9.0 2421 * 2422 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. 2423 */ 2424 function _wp_post_thumbnail_class_filter_remove( $attr ) { 2425 remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); 2426 } 2427 2428 /** 2429 * Overrides the context used in {@see wp_get_attachment_image()}. Internal use only. 2430 * 2431 * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'} 2432 * action hooks to dynamically add/remove itself so as to only filter post thumbnails. 2433 * 2434 * @ignore 2435 * @since 6.3.0 2436 * @access private 2437 * 2438 * @param string $context The context for rendering an attachment image. 2439 * @return string Modified context set to 'the_post_thumbnail'. 2440 */ 2441 function _wp_post_thumbnail_context_filter( $context ) { 2442 return 'the_post_thumbnail'; 2443 } 2444 2445 /** 2446 * Adds the '_wp_post_thumbnail_context_filter' callback to the 'wp_get_attachment_image_context' 2447 * filter hook. Internal use only. 2448 * 2449 * @ignore 2450 * @since 6.3.0 2451 * @access private 2452 */ 2453 function _wp_post_thumbnail_context_filter_add() { 2454 add_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' ); 2455 } 2456 2457 /** 2458 * Removes the '_wp_post_thumbnail_context_filter' callback from the 'wp_get_attachment_image_context' 2459 * filter hook. Internal use only. 2460 * 2461 * @ignore 2462 * @since 6.3.0 2463 * @access private 2464 */ 2465 function _wp_post_thumbnail_context_filter_remove() { 2466 remove_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' ); 2467 } 2468 2469 add_shortcode( 'wp_caption', 'img_caption_shortcode' ); 2470 add_shortcode( 'caption', 'img_caption_shortcode' ); 2471 2472 /** 2473 * Builds the Caption shortcode output. 2474 * 2475 * Allows a plugin to replace the content that would otherwise be returned. The 2476 * filter is {@see 'img_caption_shortcode'} and passes an empty string, the attr 2477 * parameter and the content parameter values. 2478 * 2479 * The supported attributes for the shortcode are 'id', 'caption_id', 'align', 2480 * 'width', 'caption', and 'class'. 2481 * 2482 * @since 2.6.0 2483 * @since 3.9.0 The `class` attribute was added. 2484 * @since 5.1.0 The `caption_id` attribute was added. 2485 * @since 5.9.0 The `$content` parameter default value changed from `null` to `''`. 2486 * 2487 * @param array $attr { 2488 * Attributes of the caption shortcode. 2489 * 2490 * @type string $id ID of the image and caption container element, i.e. `<figure>` or `<div>`. 2491 * @type string $caption_id ID of the caption element, i.e. `<figcaption>` or `<p>`. 2492 * @type string $align Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft', 2493 * 'aligncenter', alignright', 'alignnone'. 2494 * @type int $width The width of the caption, in pixels. 2495 * @type string $caption The caption text. 2496 * @type string $class Additional class name(s) added to the caption container. 2497 * } 2498 * @param string $content Optional. Shortcode content. Default empty string. 2499 * @return string HTML content to display the caption. 2500 */ 2501 function img_caption_shortcode( $attr, $content = '' ) { 2502 // New-style shortcode with the caption inside the shortcode with the link and image tags. 2503 if ( ! isset( $attr['caption'] ) ) { 2504 if ( preg_match( '#((?:<a [^>]+>\s*)?<img [^>]+>(?:\s*</a>)?)(.*)#is', $content, $matches ) ) { 2505 $content = $matches[1]; 2506 $attr['caption'] = trim( $matches[2] ); 2507 } 2508 } elseif ( str_contains( $attr['caption'], '<' ) ) { 2509 $attr['caption'] = wp_kses( $attr['caption'], 'post' ); 2510 } 2511 2512 /** 2513 * Filters the default caption shortcode output. 2514 * 2515 * If the filtered output isn't empty, it will be used instead of generating 2516 * the default caption template. 2517 * 2518 * @since 2.6.0 2519 * 2520 * @see img_caption_shortcode() 2521 * 2522 * @param string $output The caption output. Default empty. 2523 * @param array $attr Attributes of the caption shortcode. 2524 * @param string $content The image element, possibly wrapped in a hyperlink. 2525 */ 2526 $output = apply_filters( 'img_caption_shortcode', '', $attr, $content ); 2527 2528 if ( ! empty( $output ) ) { 2529 return $output; 2530 } 2531 2532 $atts = shortcode_atts( 2533 array( 2534 'id' => '', 2535 'caption_id' => '', 2536 'align' => 'alignnone', 2537 'width' => '', 2538 'caption' => '', 2539 'class' => '', 2540 ), 2541 $attr, 2542 'caption' 2543 ); 2544 2545 $atts['width'] = (int) $atts['width']; 2546 2547 if ( $atts['width'] < 1 || empty( $atts['caption'] ) ) { 2548 return $content; 2549 } 2550 2551 $id = ''; 2552 $caption_id = ''; 2553 $describedby = ''; 2554 2555 if ( $atts['id'] ) { 2556 $atts['id'] = sanitize_html_class( $atts['id'] ); 2557 $id = 'id="' . esc_attr( $atts['id'] ) . '" '; 2558 } 2559 2560 if ( $atts['caption_id'] ) { 2561 $atts['caption_id'] = sanitize_html_class( $atts['caption_id'] ); 2562 } elseif ( $atts['id'] ) { 2563 $atts['caption_id'] = 'caption-' . str_replace( '_', '-', $atts['id'] ); 2564 } 2565 2566 if ( $atts['caption_id'] ) { 2567 $caption_id = 'id="' . esc_attr( $atts['caption_id'] ) . '" '; 2568 $describedby = 'aria-describedby="' . esc_attr( $atts['caption_id'] ) . '" '; 2569 } 2570 2571 $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] ); 2572 2573 $html5 = current_theme_supports( 'html5', 'caption' ); 2574 // HTML5 captions never added the extra 10px to the image width. 2575 $width = $html5 ? $atts['width'] : ( 10 + $atts['width'] ); 2576 2577 /** 2578 * Filters the width of an image's caption. 2579 * 2580 * By default, the caption is 10 pixels greater than the width of the image, 2581 * to prevent post content from running up against a floated image. 2582 * 2583 * @since 3.7.0 2584 * 2585 * @see img_caption_shortcode() 2586 * 2587 * @param int $width Width of the caption in pixels. To remove this inline style, 2588 * return zero. 2589 * @param array $atts Attributes of the caption shortcode. 2590 * @param string $content The image element, possibly wrapped in a hyperlink. 2591 */ 2592 $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content ); 2593 2594 $style = ''; 2595 2596 if ( $caption_width ) { 2597 $style = 'style="width: ' . (int) $caption_width . 'px" '; 2598 } 2599 2600 if ( $html5 ) { 2601 $html = sprintf( 2602 '<figure %s%s%sclass="%s">%s%s</figure>', 2603 $id, 2604 $describedby, 2605 $style, 2606 esc_attr( $class ), 2607 do_shortcode( $content ), 2608 sprintf( 2609 '<figcaption %sclass="wp-caption-text">%s</figcaption>', 2610 $caption_id, 2611 $atts['caption'] 2612 ) 2613 ); 2614 } else { 2615 $html = sprintf( 2616 '<div %s%sclass="%s">%s%s</div>', 2617 $id, 2618 $style, 2619 esc_attr( $class ), 2620 str_replace( '<img ', '<img ' . $describedby, do_shortcode( $content ) ), 2621 sprintf( 2622 '<p %sclass="wp-caption-text">%s</p>', 2623 $caption_id, 2624 $atts['caption'] 2625 ) 2626 ); 2627 } 2628 2629 return $html; 2630 } 2631 2632 add_shortcode( 'gallery', 'gallery_shortcode' ); 2633 2634 /** 2635 * Builds the Gallery shortcode output. 2636 * 2637 * This implements the functionality of the Gallery Shortcode for displaying 2638 * WordPress images on a post. 2639 * 2640 * @since 2.5.0 2641 * @since 2.8.0 Added the `$attr` parameter to set the shortcode output. New attributes included 2642 * such as `size`, `itemtag`, `icontag`, `captiontag`, and columns. Changed markup from 2643 * `div` tags to `dl`, `dt` and `dd` tags. Support more than one gallery on the 2644 * same page. 2645 * @since 2.9.0 Added support for `include` and `exclude` to shortcode. 2646 * @since 3.5.0 Use get_post() instead of global `$post`. Handle mapping of `ids` to `include` 2647 * and `orderby`. 2648 * @since 3.6.0 Added validation for tags used in gallery shortcode. Add orientation information to items. 2649 * @since 3.7.0 Introduced the `link` attribute. 2650 * @since 3.9.0 `html5` gallery support, accepting 'itemtag', 'icontag', and 'captiontag' attributes. 2651 * @since 4.0.0 Removed use of `extract()`. 2652 * @since 4.1.0 Added attribute to `wp_get_attachment_link()` to output `aria-describedby`. 2653 * @since 4.2.0 Passed the shortcode instance ID to `post_gallery` and `post_playlist` filters. 2654 * @since 4.6.0 Standardized filter docs to match documentation standards for PHP. 2655 * @since 5.1.0 Code cleanup for WPCS 1.0.0 coding standards. 2656 * @since 5.3.0 Saved progress of intermediate image creation after upload. 2657 * @since 5.5.0 Ensured that galleries can be output as a list of links in feeds. 2658 * @since 5.6.0 Replaced order-style PHP type conversion functions with typecasts. Fix logic for 2659 * an array of image dimensions. 2660 * 2661 * @param array $attr { 2662 * Attributes of the gallery shortcode. 2663 * 2664 * @type string $order Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'. 2665 * @type string $orderby The field to use when ordering the images. Default 'menu_order ID'. 2666 * Accepts any valid SQL ORDERBY statement. 2667 * @type int $id Post ID. 2668 * @type string $itemtag HTML tag to use for each image in the gallery. 2669 * Default 'dl', or 'figure' when the theme registers HTML5 gallery support. 2670 * @type string $icontag HTML tag to use for each image's icon. 2671 * Default 'dt', or 'div' when the theme registers HTML5 gallery support. 2672 * @type string $captiontag HTML tag to use for each image's caption. 2673 * Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support. 2674 * @type int $columns Number of columns of images to display. Default 3. 2675 * @type string|int[] $size Size of the images to display. Accepts any registered image size name, or an array 2676 * of width and height values in pixels (in that order). Default 'thumbnail'. 2677 * @type string $ids A comma-separated list of IDs of attachments to display. Default empty. 2678 * @type string $include A comma-separated list of IDs of attachments to include. Default empty. 2679 * @type string $exclude A comma-separated list of IDs of attachments to exclude. Default empty. 2680 * @type string $link What to link each image to. Default empty (links to the attachment page). 2681 * Accepts 'file', 'none'. 2682 * } 2683 * @return string HTML content to display gallery. 2684 */ 2685 function gallery_shortcode( $attr ) { 2686 $post = get_post(); 2687 2688 static $instance = 0; 2689 ++$instance; 2690 2691 if ( ! empty( $attr['ids'] ) ) { 2692 // 'ids' is explicitly ordered, unless you specify otherwise. 2693 if ( empty( $attr['orderby'] ) ) { 2694 $attr['orderby'] = 'post__in'; 2695 } 2696 $attr['include'] = $attr['ids']; 2697 } 2698 2699 /** 2700 * Filters the default gallery shortcode output. 2701 * 2702 * If the filtered output isn't empty, it will be used instead of generating 2703 * the default gallery template. 2704 * 2705 * @since 2.5.0 2706 * @since 4.2.0 The `$instance` parameter was added. 2707 * 2708 * @see gallery_shortcode() 2709 * 2710 * @param string $output The gallery output. Default empty. 2711 * @param array $attr Attributes of the gallery shortcode. 2712 * @param int $instance Unique numeric ID of this gallery shortcode instance. 2713 */ 2714 $output = apply_filters( 'post_gallery', '', $attr, $instance ); 2715 2716 if ( ! empty( $output ) ) { 2717 return $output; 2718 } 2719 2720 $html5 = current_theme_supports( 'html5', 'gallery' ); 2721 $atts = shortcode_atts( 2722 array( 2723 'order' => 'ASC', 2724 'orderby' => 'menu_order ID', 2725 'id' => $post ? $post->ID : 0, 2726 'itemtag' => $html5 ? 'figure' : 'dl', 2727 'icontag' => $html5 ? 'div' : 'dt', 2728 'captiontag' => $html5 ? 'figcaption' : 'dd', 2729 'columns' => 3, 2730 'size' => 'thumbnail', 2731 'include' => '', 2732 'exclude' => '', 2733 'link' => '', 2734 ), 2735 $attr, 2736 'gallery' 2737 ); 2738 2739 $id = (int) $atts['id']; 2740 2741 if ( ! empty( $atts['include'] ) ) { 2742 $_attachments = get_posts( 2743 array( 2744 'include' => $atts['include'], 2745 'post_status' => 'inherit', 2746 'post_type' => 'attachment', 2747 'post_mime_type' => 'image', 2748 'order' => $atts['order'], 2749 'orderby' => $atts['orderby'], 2750 ) 2751 ); 2752 2753 $attachments = array(); 2754 foreach ( $_attachments as $key => $val ) { 2755 $attachments[ $val->ID ] = $_attachments[ $key ]; 2756 } 2757 } elseif ( ! empty( $atts['exclude'] ) ) { 2758 $post_parent_id = $id; 2759 $attachments = get_children( 2760 array( 2761 'post_parent' => $id, 2762 'exclude' => $atts['exclude'], 2763 'post_status' => 'inherit', 2764 'post_type' => 'attachment', 2765 'post_mime_type' => 'image', 2766 'order' => $atts['order'], 2767 'orderby' => $atts['orderby'], 2768 ) 2769 ); 2770 } else { 2771 $post_parent_id = $id; 2772 $attachments = get_children( 2773 array( 2774 'post_parent' => $id, 2775 'post_status' => 'inherit', 2776 'post_type' => 'attachment', 2777 'post_mime_type' => 'image', 2778 'order' => $atts['order'], 2779 'orderby' => $atts['orderby'], 2780 ) 2781 ); 2782 } 2783 2784 if ( ! empty( $post_parent_id ) ) { 2785 $post_parent = get_post( $post_parent_id ); 2786 2787 // Terminate the shortcode execution if the user cannot read the post or it is password-protected. 2788 if ( ! is_post_publicly_viewable( $post_parent->ID ) && ! current_user_can( 'read_post', $post_parent->ID ) 2789 || post_password_required( $post_parent ) 2790 ) { 2791 return ''; 2792 } 2793 } 2794 2795 if ( empty( $attachments ) ) { 2796 return ''; 2797 } 2798 2799 if ( is_feed() ) { 2800 $output = "\n"; 2801 foreach ( $attachments as $att_id => $attachment ) { 2802 if ( ! empty( $atts['link'] ) ) { 2803 if ( 'none' === $atts['link'] ) { 2804 $output .= wp_get_attachment_image( $att_id, $atts['size'], false, $attr ); 2805 } else { 2806 $output .= wp_get_attachment_link( $att_id, $atts['size'], false ); 2807 } 2808 } else { 2809 $output .= wp_get_attachment_link( $att_id, $atts['size'], true ); 2810 } 2811 $output .= "\n"; 2812 } 2813 return $output; 2814 } 2815 2816 $itemtag = tag_escape( $atts['itemtag'] ); 2817 $captiontag = tag_escape( $atts['captiontag'] ); 2818 $icontag = tag_escape( $atts['icontag'] ); 2819 $valid_tags = wp_kses_allowed_html( 'post' ); 2820 if ( ! isset( $valid_tags[ $itemtag ] ) ) { 2821 $itemtag = 'dl'; 2822 } 2823 if ( ! isset( $valid_tags[ $captiontag ] ) ) { 2824 $captiontag = 'dd'; 2825 } 2826 if ( ! isset( $valid_tags[ $icontag ] ) ) { 2827 $icontag = 'dt'; 2828 } 2829 2830 $columns = (int) $atts['columns']; 2831 $itemwidth = $columns > 0 ? floor( 100 / $columns ) : 100; 2832 $float = is_rtl() ? 'right' : 'left'; 2833 2834 $selector = "gallery-{$instance}"; 2835 2836 $gallery_style = ''; 2837 2838 /** 2839 * Filters whether to print default gallery styles. 2840 * 2841 * @since 3.1.0 2842 * 2843 * @param bool $print Whether to print default gallery styles. 2844 * Defaults to false if the theme supports HTML5 galleries. 2845 * Otherwise, defaults to true. 2846 */ 2847 if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) { 2848 $type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"'; 2849 2850 $gallery_style = " 2851 <style{$type_attr}> 2852 #{$selector} { 2853 margin: auto; 2854 } 2855 #{$selector} .gallery-item { 2856 float: {$float}; 2857 margin-top: 10px; 2858 text-align: center; 2859 width: {$itemwidth}%; 2860 } 2861 #{$selector} img { 2862 border: 2px solid #cfcfcf; 2863 } 2864 #{$selector} .gallery-caption { 2865 margin-left: 0; 2866 } 2867 /* see gallery_shortcode() in wp-includes/media.php */ 2868 </style>\n\t\t"; 2869 } 2870 2871 $size_class = sanitize_html_class( is_array( $atts['size'] ) ? implode( 'x', $atts['size'] ) : $atts['size'] ); 2872 $gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>"; 2873 2874 /** 2875 * Filters the default gallery shortcode CSS styles. 2876 * 2877 * @since 2.5.0 2878 * 2879 * @param string $gallery_style Default CSS styles and opening HTML div container 2880 * for the gallery shortcode output. 2881 */ 2882 $output = apply_filters( 'gallery_style', $gallery_style . $gallery_div ); 2883 2884 $i = 0; 2885 2886 foreach ( $attachments as $id => $attachment ) { 2887 2888 $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : ''; 2889 2890 if ( ! empty( $atts['link'] ) && 'file' === $atts['link'] ) { 2891 $image_output = wp_get_attachment_link( $id, $atts['size'], false, false, false, $attr ); 2892 } elseif ( ! empty( $atts['link'] ) && 'none' === $atts['link'] ) { 2893 $image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr ); 2894 } else { 2895 $image_output = wp_get_attachment_link( $id, $atts['size'], true, false, false, $attr ); 2896 } 2897 2898 $image_meta = wp_get_attachment_metadata( $id ); 2899 2900 $orientation = ''; 2901 2902 if ( isset( $image_meta['height'], $image_meta['width'] ) ) { 2903 $orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape'; 2904 } 2905 2906 $output .= "<{$itemtag} class='gallery-item'>"; 2907 $output .= " 2908 <{$icontag} class='gallery-icon {$orientation}'> 2909 $image_output 2910 </{$icontag}>"; 2911 2912 if ( $captiontag && trim( $attachment->post_excerpt ) ) { 2913 $output .= " 2914 <{$captiontag} class='wp-caption-text gallery-caption' id='$selector-$id'> 2915 " . wptexturize( $attachment->post_excerpt ) . " 2916 </{$captiontag}>"; 2917 } 2918 2919 $output .= "</{$itemtag}>"; 2920 2921 if ( ! $html5 && $columns > 0 && 0 === ++$i % $columns ) { 2922 $output .= '<br style="clear: both" />'; 2923 } 2924 } 2925 2926 if ( ! $html5 && $columns > 0 && 0 !== $i % $columns ) { 2927 $output .= " 2928 <br style='clear: both' />"; 2929 } 2930 2931 $output .= " 2932 </div>\n"; 2933 2934 return $output; 2935 } 2936 2937 /** 2938 * Outputs the templates used by playlists. 2939 * 2940 * @since 3.9.0 2941 */ 2942 function wp_underscore_playlist_templates() { 2943 ?> 2944 <script type="text/html" id="tmpl-wp-playlist-current-item"> 2945 <# if ( data.thumb && data.thumb.src ) { #> 2946 <img src="{{ data.thumb.src }}" alt="" /> 2947 <# } #> 2948 <div class="wp-playlist-caption"> 2949 <span class="wp-playlist-item-meta wp-playlist-item-title"> 2950 <# if ( data.meta.album || data.meta.artist ) { #> 2951 <?php 2952 /* translators: %s: Playlist item title. */ 2953 printf( _x( '“%s”', 'playlist item title' ), '{{ data.title }}' ); 2954 ?> 2955 <# } else { #> 2956 {{ data.title }} 2957 <# } #> 2958 </span> 2959 <# if ( data.meta.album ) { #><span class="wp-playlist-item-meta wp-playlist-item-album">{{ data.meta.album }}</span><# } #> 2960 <# if ( data.meta.artist ) { #><span class="wp-playlist-item-meta wp-playlist-item-artist">{{ data.meta.artist }}</span><# } #> 2961 </div> 2962 </script> 2963 <script type="text/html" id="tmpl-wp-playlist-item"> 2964 <div class="wp-playlist-item"> 2965 <a class="wp-playlist-caption" href="{{ data.src }}"> 2966 {{ data.index ? ( data.index + '. ' ) : '' }} 2967 <# if ( data.caption ) { #> 2968 {{ data.caption }} 2969 <# } else { #> 2970 <# if ( data.artists && data.meta.artist ) { #> 2971 <span class="wp-playlist-item-title"> 2972 <?php 2973 /* translators: %s: Playlist item title. */ 2974 printf( _x( '“%s”', 'playlist item title' ), '{{{ data.title }}}' ); 2975 ?> 2976 </span> 2977 <span class="wp-playlist-item-artist"> — {{ data.meta.artist }}</span> 2978 <# } else { #> 2979 <span class="wp-playlist-item-title">{{{ data.title }}}</span> 2980 <# } #> 2981 <# } #> 2982 </a> 2983 <# if ( data.meta.length_formatted ) { #> 2984 <div class="wp-playlist-item-length">{{ data.meta.length_formatted }}</div> 2985 <# } #> 2986 </div> 2987 </script> 2988 <?php 2989 } 2990 2991 /** 2992 * Outputs and enqueues default scripts and styles for playlists. 2993 * 2994 * @since 3.9.0 2995 * 2996 * @param string $type Type of playlist. Accepts 'audio' or 'video'. 2997 */ 2998 function wp_playlist_scripts( $type ) { 2999 wp_enqueue_style( 'wp-mediaelement' ); 3000 wp_enqueue_script( 'wp-playlist' ); 3001 add_action( 'wp_footer', 'wp_underscore_playlist_templates', 0 ); 3002 add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 ); 3003 } 3004 3005 /** 3006 * Builds the Playlist shortcode output. 3007 * 3008 * This implements the functionality of the playlist shortcode for displaying 3009 * a collection of WordPress audio or video files in a post. 3010 * 3011 * @since 3.9.0 3012 * 3013 * @global int $content_width 3014 * 3015 * @param array $attr { 3016 * Array of default playlist attributes. 3017 * 3018 * @type string $type Type of playlist to display. Accepts 'audio' or 'video'. Default 'audio'. 3019 * @type string $order Designates ascending or descending order of items in the playlist. 3020 * Accepts 'ASC', 'DESC'. Default 'ASC'. 3021 * @type string $orderby Any column, or columns, to sort the playlist. If $ids are 3022 * passed, this defaults to the order of the $ids array ('post__in'). 3023 * Otherwise default is 'menu_order ID'. 3024 * @type int $id If an explicit $ids array is not present, this parameter 3025 * will determine which attachments are used for the playlist. 3026 * Default is the current post ID. 3027 * @type array $ids Create a playlist out of these explicit attachment IDs. If empty, 3028 * a playlist will be created from all $type attachments of $id. 3029 * Default empty. 3030 * @type array $exclude List of specific attachment IDs to exclude from the playlist. Default empty. 3031 * @type string $style Playlist style to use. Accepts 'light' or 'dark'. Default 'light'. 3032 * @type bool $tracklist Whether to show or hide the playlist. Default true. 3033 * @type bool $tracknumbers Whether to show or hide the numbers next to entries in the playlist. Default true. 3034 * @type bool $images Show or hide the video or audio thumbnail (Featured Image/post 3035 * thumbnail). Default true. 3036 * @type bool $artists Whether to show or hide artist name in the playlist. Default true. 3037 * } 3038 * 3039 * @return string Playlist output. Empty string if the passed type is unsupported. 3040 */ 3041 function wp_playlist_shortcode( $attr ) { 3042 global $content_width; 3043 $post = get_post(); 3044 3045 static $instance = 0; 3046 ++$instance; 3047 3048 if ( ! empty( $attr['ids'] ) ) { 3049 // 'ids' is explicitly ordered, unless you specify otherwise. 3050 if ( empty( $attr['orderby'] ) ) { 3051 $attr['orderby'] = 'post__in'; 3052 } 3053 $attr['include'] = $attr['ids']; 3054 } 3055 3056 /** 3057 * Filters the playlist output. 3058 * 3059 * Returning a non-empty value from the filter will short-circuit generation 3060 * of the default playlist output, returning the passed value instead. 3061 * 3062 * @since 3.9.0 3063 * @since 4.2.0 The `$instance` parameter was added. 3064 * 3065 * @param string $output Playlist output. Default empty. 3066 * @param array $attr An array of shortcode attributes. 3067 * @param int $instance Unique numeric ID of this playlist shortcode instance. 3068 */ 3069 $output = apply_filters( 'post_playlist', '', $attr, $instance ); 3070 3071 if ( ! empty( $output ) ) { 3072 return $output; 3073 } 3074 3075 $atts = shortcode_atts( 3076 array( 3077 'type' => 'audio', 3078 'order' => 'ASC', 3079 'orderby' => 'menu_order ID', 3080 'id' => $post ? $post->ID : 0, 3081 'include' => '', 3082 'exclude' => '', 3083 'style' => 'light', 3084 'tracklist' => true, 3085 'tracknumbers' => true, 3086 'images' => true, 3087 'artists' => true, 3088 ), 3089 $attr, 3090 'playlist' 3091 ); 3092 3093 $id = (int) $atts['id']; 3094 3095 if ( 'audio' !== $atts['type'] ) { 3096 $atts['type'] = 'video'; 3097 } 3098 3099 $args = array( 3100 'post_status' => 'inherit', 3101 'post_type' => 'attachment', 3102 'post_mime_type' => $atts['type'], 3103 'order' => $atts['order'], 3104 'orderby' => $atts['orderby'], 3105 ); 3106 3107 if ( ! empty( $atts['include'] ) ) { 3108 $args['include'] = $atts['include']; 3109 $_attachments = get_posts( $args ); 3110 3111 $attachments = array(); 3112 foreach ( $_attachments as $key => $val ) { 3113 $attachments[ $val->ID ] = $_attachments[ $key ]; 3114 } 3115 } elseif ( ! empty( $atts['exclude'] ) ) { 3116 $args['post_parent'] = $id; 3117 $args['exclude'] = $atts['exclude']; 3118 $attachments = get_children( $args ); 3119 } else { 3120 $args['post_parent'] = $id; 3121 $attachments = get_children( $args ); 3122 } 3123 3124 if ( ! empty( $args['post_parent'] ) ) { 3125 $post_parent = get_post( $id ); 3126 3127 // Terminate the shortcode execution if the user cannot read the post or it is password-protected. 3128 if ( ! current_user_can( 'read_post', $post_parent->ID ) || post_password_required( $post_parent ) ) { 3129 return ''; 3130 } 3131 } 3132 3133 if ( empty( $attachments ) ) { 3134 return ''; 3135 } 3136 3137 if ( is_feed() ) { 3138 $output = "\n"; 3139 foreach ( $attachments as $att_id => $attachment ) { 3140 $output .= wp_get_attachment_link( $att_id ) . "\n"; 3141 } 3142 return $output; 3143 } 3144 3145 $outer = 22; // Default padding and border of wrapper. 3146 3147 $default_width = 640; 3148 $default_height = 360; 3149 3150 $theme_width = empty( $content_width ) ? $default_width : ( $content_width - $outer ); 3151 $theme_height = empty( $content_width ) ? $default_height : round( ( $default_height * $theme_width ) / $default_width ); 3152 3153 $data = array( 3154 'type' => $atts['type'], 3155 // Don't pass strings to JSON, will be truthy in JS. 3156 'tracklist' => wp_validate_boolean( $atts['tracklist'] ), 3157 'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ), 3158 'images' => wp_validate_boolean( $atts['images'] ), 3159 'artists' => wp_validate_boolean( $atts['artists'] ), 3160 ); 3161 3162 $tracks = array(); 3163 foreach ( $attachments as $attachment ) { 3164 $url = wp_get_attachment_url( $attachment->ID ); 3165 $ftype = wp_check_filetype( $url, wp_get_mime_types() ); 3166 $track = array( 3167 'src' => $url, 3168 'type' => $ftype['type'], 3169 'title' => $attachment->post_title, 3170 'caption' => $attachment->post_excerpt, 3171 'description' => $attachment->post_content, 3172 ); 3173 3174 $track['meta'] = array(); 3175 $meta = wp_get_attachment_metadata( $attachment->ID ); 3176 if ( ! empty( $meta ) ) { 3177 3178 foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) { 3179 if ( ! empty( $meta[ $key ] ) ) { 3180 $track['meta'][ $key ] = $meta[ $key ]; 3181 } 3182 } 3183 3184 if ( 'video' === $atts['type'] ) { 3185 if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) { 3186 $width = $meta['width']; 3187 $height = $meta['height']; 3188 $theme_height = round( ( $height * $theme_width ) / $width ); 3189 } else { 3190 $width = $default_width; 3191 $height = $default_height; 3192 } 3193 3194 $track['dimensions'] = array( 3195 'original' => compact( 'width', 'height' ), 3196 'resized' => array( 3197 'width' => $theme_width, 3198 'height' => $theme_height, 3199 ), 3200 ); 3201 } 3202 } 3203 3204 if ( $atts['images'] ) { 3205 $thumb_id = get_post_thumbnail_id( $attachment->ID ); 3206 if ( ! empty( $thumb_id ) ) { 3207 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' ); 3208 $track['image'] = compact( 'src', 'width', 'height' ); 3209 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' ); 3210 $track['thumb'] = compact( 'src', 'width', 'height' ); 3211 } else { 3212 $src = wp_mime_type_icon( $attachment->ID, '.svg' ); 3213 $width = 48; 3214 $height = 64; 3215 $track['image'] = compact( 'src', 'width', 'height' ); 3216 $track['thumb'] = compact( 'src', 'width', 'height' ); 3217 } 3218 } 3219 3220 $tracks[] = $track; 3221 } 3222 $data['tracks'] = $tracks; 3223 3224 $safe_type = esc_attr( $atts['type'] ); 3225 $safe_style = esc_attr( $atts['style'] ); 3226 3227 ob_start(); 3228 3229 if ( 1 === $instance ) { 3230 /** 3231 * Prints and enqueues playlist scripts, styles, and JavaScript templates. 3232 * 3233 * @since 3.9.0 3234 * 3235 * @param string $type Type of playlist. Possible values are 'audio' or 'video'. 3236 * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'. 3237 */ 3238 do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] ); 3239 } 3240 ?> 3241 <div class="wp-playlist wp-<?php echo $safe_type; ?>-playlist wp-playlist-<?php echo $safe_style; ?>"> 3242 <?php if ( 'audio' === $atts['type'] ) : ?> 3243 <div class="wp-playlist-current-item"></div> 3244 <?php endif; ?> 3245 <<?php echo $safe_type; ?> controls="controls" preload="none" width="<?php echo (int) $theme_width; ?>" 3246 <?php 3247 if ( 'video' === $safe_type ) { 3248 echo ' height="', (int) $theme_height, '"'; 3249 } 3250 ?> 3251 ></<?php echo $safe_type; ?>> 3252 <div class="wp-playlist-next"></div> 3253 <div class="wp-playlist-prev"></div> 3254 <noscript> 3255 <ol> 3256 <?php 3257 foreach ( $attachments as $att_id => $attachment ) { 3258 printf( '<li>%s</li>', wp_get_attachment_link( $att_id ) ); 3259 } 3260 ?> 3261 </ol> 3262 </noscript> 3263 <script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $data ); ?></script> 3264 </div> 3265 <?php 3266 return ob_get_clean(); 3267 } 3268 add_shortcode( 'playlist', 'wp_playlist_shortcode' ); 3269 3270 /** 3271 * Provides a No-JS Flash fallback as a last resort for audio / video. 3272 * 3273 * @since 3.6.0 3274 * 3275 * @param string $url The media element URL. 3276 * @return string Fallback HTML. 3277 */ 3278 function wp_mediaelement_fallback( $url ) { 3279 /** 3280 * Filters the MediaElement fallback output for no-JS. 3281 * 3282 * @since 3.6.0 3283 * 3284 * @param string $output Fallback output for no-JS. 3285 * @param string $url Media file URL. 3286 */ 3287 return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url ); 3288 } 3289 3290 /** 3291 * Returns a filtered list of supported audio formats. 3292 * 3293 * @since 3.6.0 3294 * 3295 * @return string[] Supported audio formats. 3296 */ 3297 function wp_get_audio_extensions() { 3298 /** 3299 * Filters the list of supported audio formats. 3300 * 3301 * @since 3.6.0 3302 * 3303 * @param string[] $extensions An array of supported audio formats. Defaults are 3304 * 'mp3', 'ogg', 'flac', 'm4a', 'wav'. 3305 */ 3306 return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'flac', 'm4a', 'wav' ) ); 3307 } 3308 3309 /** 3310 * Returns useful keys to use to lookup data from an attachment's stored metadata. 3311 * 3312 * @since 3.9.0 3313 * 3314 * @param WP_Post $attachment The current attachment, provided for context. 3315 * @param string $context Optional. The context. Accepts 'edit', 'display'. Default 'display'. 3316 * @return string[] Key/value pairs of field keys to labels. 3317 */ 3318 function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) { 3319 $fields = array( 3320 'artist' => __( 'Artist' ), 3321 'album' => __( 'Album' ), 3322 ); 3323 3324 if ( 'display' === $context ) { 3325 $fields['genre'] = __( 'Genre' ); 3326 $fields['year'] = __( 'Year' ); 3327 $fields['length_formatted'] = _x( 'Length', 'video or audio' ); 3328 } elseif ( 'js' === $context ) { 3329 $fields['bitrate'] = __( 'Bitrate' ); 3330 $fields['bitrate_mode'] = __( 'Bitrate Mode' ); 3331 } 3332 3333 /** 3334 * Filters the editable list of keys to look up data from an attachment's metadata. 3335 * 3336 * @since 3.9.0 3337 * 3338 * @param array $fields Key/value pairs of field keys to labels. 3339 * @param WP_Post $attachment Attachment object. 3340 * @param string $context The context. Accepts 'edit', 'display'. Default 'display'. 3341 */ 3342 return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context ); 3343 } 3344 /** 3345 * Builds the Audio shortcode output. 3346 * 3347 * This implements the functionality of the Audio Shortcode for displaying 3348 * WordPress mp3s in a post. 3349 * 3350 * @since 3.6.0 3351 * @since 6.8.0 Added the 'muted' attribute. 3352 * 3353 * @param array $attr { 3354 * Attributes of the audio shortcode. 3355 * 3356 * @type string $src URL to the source of the audio file. Default empty. 3357 * @type string $loop The 'loop' attribute for the `<audio>` element. Default empty. 3358 * @type string $autoplay The 'autoplay' attribute for the `<audio>` element. Default empty. 3359 * @type string $muted The 'muted' attribute for the `<audio>` element. Default 'false'. 3360 * @type string $preload The 'preload' attribute for the `<audio>` element. Default 'none'. 3361 * @type string $class The 'class' attribute for the `<audio>` element. Default 'wp-audio-shortcode'. 3362 * @type string $style The 'style' attribute for the `<audio>` element. Default 'width: 100%;'. 3363 * } 3364 * @param string $content Shortcode content. 3365 * @return string|void HTML content to display audio. 3366 */ 3367 function wp_audio_shortcode( $attr, $content = '' ) { 3368 $post_id = get_post() ? get_the_ID() : 0; 3369 3370 static $instance = 0; 3371 ++$instance; 3372 3373 /** 3374 * Filters the default audio shortcode output. 3375 * 3376 * If the filtered output isn't empty, it will be used instead of generating the default audio template. 3377 * 3378 * @since 3.6.0 3379 * 3380 * @param string $html Empty variable to be replaced with shortcode markup. 3381 * @param array $attr Attributes of the shortcode. See {@see wp_audio_shortcode()}. 3382 * @param string $content Shortcode content. 3383 * @param int $instance Unique numeric ID of this audio shortcode instance. 3384 */ 3385 $override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance ); 3386 3387 if ( '' !== $override ) { 3388 return $override; 3389 } 3390 3391 $audio = null; 3392 3393 $default_types = wp_get_audio_extensions(); 3394 $defaults_atts = array( 3395 'src' => '', 3396 'loop' => '', 3397 'autoplay' => '', 3398 'muted' => 'false', 3399 'preload' => 'none', 3400 'class' => 'wp-audio-shortcode', 3401 'style' => 'width: 100%;', 3402 ); 3403 foreach ( $default_types as $type ) { 3404 $defaults_atts[ $type ] = ''; 3405 } 3406 3407 $atts = shortcode_atts( $defaults_atts, $attr, 'audio' ); 3408 3409 $primary = false; 3410 if ( ! empty( $atts['src'] ) ) { 3411 $type = wp_check_filetype( $atts['src'], wp_get_mime_types() ); 3412 3413 if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) { 3414 return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) ); 3415 } 3416 3417 $primary = true; 3418 array_unshift( $default_types, 'src' ); 3419 } else { 3420 foreach ( $default_types as $ext ) { 3421 if ( ! empty( $atts[ $ext ] ) ) { 3422 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() ); 3423 3424 if ( strtolower( $type['ext'] ) === $ext ) { 3425 $primary = true; 3426 } 3427 } 3428 } 3429 } 3430 3431 if ( ! $primary ) { 3432 $audios = get_attached_media( 'audio', $post_id ); 3433 3434 if ( empty( $audios ) ) { 3435 return; 3436 } 3437 3438 $audio = reset( $audios ); 3439 $atts['src'] = wp_get_attachment_url( $audio->ID ); 3440 3441 if ( empty( $atts['src'] ) ) { 3442 return; 3443 } 3444 3445 array_unshift( $default_types, 'src' ); 3446 } 3447 3448 /** 3449 * Filters the media library used for the audio shortcode. 3450 * 3451 * @since 3.6.0 3452 * 3453 * @param string $library Media library used for the audio shortcode. 3454 */ 3455 $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ); 3456 3457 if ( 'mediaelement' === $library && did_action( 'init' ) ) { 3458 wp_enqueue_style( 'wp-mediaelement' ); 3459 wp_enqueue_script( 'wp-mediaelement' ); 3460 } 3461 3462 /** 3463 * Filters the class attribute for the audio shortcode output container. 3464 * 3465 * @since 3.6.0 3466 * @since 4.9.0 The `$atts` parameter was added. 3467 * 3468 * @param string $class CSS class or list of space-separated classes. 3469 * @param array $atts Array of audio shortcode attributes. 3470 */ 3471 $atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts ); 3472 3473 $html_atts = array( 3474 'class' => $atts['class'], 3475 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), 3476 'loop' => wp_validate_boolean( $atts['loop'] ), 3477 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), 3478 'muted' => wp_validate_boolean( $atts['muted'] ), 3479 'preload' => $atts['preload'], 3480 'style' => $atts['style'], 3481 ); 3482 3483 // These ones should just be omitted altogether if they are blank. 3484 foreach ( array( 'loop', 'autoplay', 'preload', 'muted' ) as $a ) { 3485 if ( empty( $html_atts[ $a ] ) ) { 3486 unset( $html_atts[ $a ] ); 3487 } 3488 } 3489 3490 $attr_strings = array(); 3491 3492 foreach ( $html_atts as $attribute_name => $attribute_value ) { 3493 if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) { 3494 // Add boolean attributes without a value. 3495 $attr_strings[] = esc_attr( $attribute_name ); 3496 } elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) { 3497 // Handle the preload attribute with specific allowed values. 3498 $allowed_preload_values = array( 'none', 'metadata', 'auto' ); 3499 if ( in_array( $attribute_value, $allowed_preload_values, true ) ) { 3500 $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); 3501 } 3502 } else { 3503 // For other attributes, include the value. 3504 $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); 3505 } 3506 } 3507 3508 $html = sprintf( '<audio %s controls="controls">', implode( ' ', $attr_strings ) ); 3509 $fileurl = ''; 3510 $source = '<source type="%s" src="%s" />'; 3511 3512 foreach ( $default_types as $fallback ) { 3513 if ( ! empty( $atts[ $fallback ] ) ) { 3514 if ( empty( $fileurl ) ) { 3515 $fileurl = $atts[ $fallback ]; 3516 } 3517 3518 $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() ); 3519 $url = add_query_arg( '_', $instance, $atts[ $fallback ] ); 3520 $html .= sprintf( $source, $type['type'], esc_url( $url ) ); 3521 } 3522 } 3523 3524 if ( 'mediaelement' === $library ) { 3525 $html .= wp_mediaelement_fallback( $fileurl ); 3526 } 3527 3528 $html .= '</audio>'; 3529 3530 /** 3531 * Filters the audio shortcode output. 3532 * 3533 * @since 3.6.0 3534 * 3535 * @param string $html Audio shortcode HTML output. 3536 * @param array $atts Array of audio shortcode attributes. 3537 * @param string $audio Audio file. 3538 * @param int $post_id Post ID. 3539 * @param string $library Media library used for the audio shortcode. 3540 */ 3541 return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library ); 3542 } 3543 add_shortcode( 'audio', 'wp_audio_shortcode' ); 3544 3545 /** 3546 * Returns a filtered list of supported video formats. 3547 * 3548 * @since 3.6.0 3549 * 3550 * @return string[] List of supported video formats. 3551 */ 3552 function wp_get_video_extensions() { 3553 /** 3554 * Filters the list of supported video formats. 3555 * 3556 * @since 3.6.0 3557 * 3558 * @param string[] $extensions An array of supported video formats. Defaults are 3559 * 'mp4', 'm4v', 'webm', 'ogv', 'flv'. 3560 */ 3561 return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'flv' ) ); 3562 } 3563 3564 /** 3565 * Builds the Video shortcode output. 3566 * 3567 * This implements the functionality of the Video Shortcode for displaying 3568 * WordPress mp4s in a post. 3569 * 3570 * @since 3.6.0 3571 * 3572 * @global int $content_width 3573 * 3574 * @param array $attr { 3575 * Attributes of the shortcode. 3576 * 3577 * @type string $src URL to the source of the video file. Default empty. 3578 * @type int $height Height of the video embed in pixels. Default 360. 3579 * @type int $width Width of the video embed in pixels. Default $content_width or 640. 3580 * @type string $poster The 'poster' attribute for the `<video>` element. Default empty. 3581 * @type string $loop The 'loop' attribute for the `<video>` element. Default empty. 3582 * @type string $autoplay The 'autoplay' attribute for the `<video>` element. Default empty. 3583 * @type string $muted The 'muted' attribute for the `<video>` element. Default false. 3584 * @type string $preload The 'preload' attribute for the `<video>` element. 3585 * Default 'metadata'. 3586 * @type string $class The 'class' attribute for the `<video>` element. 3587 * Default 'wp-video-shortcode'. 3588 * } 3589 * @param string $content Shortcode content. 3590 * @return string|void HTML content to display video. 3591 */ 3592 function wp_video_shortcode( $attr, $content = '' ) { 3593 global $content_width; 3594 $post_id = get_post() ? get_the_ID() : 0; 3595 3596 static $instance = 0; 3597 ++$instance; 3598 3599 /** 3600 * Filters the default video shortcode output. 3601 * 3602 * If the filtered output isn't empty, it will be used instead of generating 3603 * the default video template. 3604 * 3605 * @since 3.6.0 3606 * 3607 * @see wp_video_shortcode() 3608 * 3609 * @param string $html Empty variable to be replaced with shortcode markup. 3610 * @param array $attr Attributes of the shortcode. See {@see wp_video_shortcode()}. 3611 * @param string $content Video shortcode content. 3612 * @param int $instance Unique numeric ID of this video shortcode instance. 3613 */ 3614 $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance ); 3615 3616 if ( '' !== $override ) { 3617 return $override; 3618 } 3619 3620 $video = null; 3621 3622 $default_types = wp_get_video_extensions(); 3623 $defaults_atts = array( 3624 'src' => '', 3625 'poster' => '', 3626 'loop' => '', 3627 'autoplay' => '', 3628 'muted' => 'false', 3629 'preload' => 'metadata', 3630 'width' => 640, 3631 'height' => 360, 3632 'class' => 'wp-video-shortcode', 3633 ); 3634 3635 foreach ( $default_types as $type ) { 3636 $defaults_atts[ $type ] = ''; 3637 } 3638 3639 $atts = shortcode_atts( $defaults_atts, $attr, 'video' ); 3640 3641 if ( is_admin() ) { 3642 // Shrink the video so it isn't huge in the admin. 3643 if ( $atts['width'] > $defaults_atts['width'] ) { 3644 $atts['height'] = round( ( $atts['height'] * $defaults_atts['width'] ) / $atts['width'] ); 3645 $atts['width'] = $defaults_atts['width']; 3646 } 3647 } else { 3648 // If the video is bigger than the theme. 3649 if ( ! empty( $content_width ) && $atts['width'] > $content_width ) { 3650 $atts['height'] = round( ( $atts['height'] * $content_width ) / $atts['width'] ); 3651 $atts['width'] = $content_width; 3652 } 3653 } 3654 3655 $is_vimeo = false; 3656 $is_youtube = false; 3657 $yt_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#'; 3658 $vimeo_pattern = '#^https?://(.+\.)?vimeo\.com/.*#'; 3659 3660 $primary = false; 3661 if ( ! empty( $atts['src'] ) ) { 3662 $is_vimeo = ( preg_match( $vimeo_pattern, $atts['src'] ) ); 3663 $is_youtube = ( preg_match( $yt_pattern, $atts['src'] ) ); 3664 3665 if ( ! $is_youtube && ! $is_vimeo ) { 3666 $type = wp_check_filetype( $atts['src'], wp_get_mime_types() ); 3667 3668 if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) { 3669 return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) ); 3670 } 3671 } 3672 3673 if ( $is_vimeo ) { 3674 wp_enqueue_script( 'mediaelement-vimeo' ); 3675 } 3676 3677 $primary = true; 3678 array_unshift( $default_types, 'src' ); 3679 } else { 3680 foreach ( $default_types as $ext ) { 3681 if ( ! empty( $atts[ $ext ] ) ) { 3682 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() ); 3683 if ( strtolower( $type['ext'] ) === $ext ) { 3684 $primary = true; 3685 } 3686 } 3687 } 3688 } 3689 3690 if ( ! $primary ) { 3691 $videos = get_attached_media( 'video', $post_id ); 3692 if ( empty( $videos ) ) { 3693 return; 3694 } 3695 3696 $video = reset( $videos ); 3697 $atts['src'] = wp_get_attachment_url( $video->ID ); 3698 if ( empty( $atts['src'] ) ) { 3699 return; 3700 } 3701 3702 array_unshift( $default_types, 'src' ); 3703 } 3704 3705 /** 3706 * Filters the media library used for the video shortcode. 3707 * 3708 * @since 3.6.0 3709 * 3710 * @param string $library Media library used for the video shortcode. 3711 */ 3712 $library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' ); 3713 if ( 'mediaelement' === $library && did_action( 'init' ) ) { 3714 wp_enqueue_style( 'wp-mediaelement' ); 3715 wp_enqueue_script( 'wp-mediaelement' ); 3716 wp_enqueue_script( 'mediaelement-vimeo' ); 3717 } 3718 3719 /* 3720 * MediaElement.js has issues with some URL formats for Vimeo and YouTube, 3721 * so update the URL to prevent the ME.js player from breaking. 3722 */ 3723 if ( 'mediaelement' === $library ) { 3724 if ( $is_youtube ) { 3725 // Remove `feature` query arg and force SSL - see #40866. 3726 $atts['src'] = remove_query_arg( 'feature', $atts['src'] ); 3727 $atts['src'] = set_url_scheme( $atts['src'], 'https' ); 3728 } elseif ( $is_vimeo ) { 3729 // Remove all query arguments and force SSL - see #40866. 3730 $parsed_vimeo_url = wp_parse_url( $atts['src'] ); 3731 $vimeo_src = 'https://' . $parsed_vimeo_url['host'] . $parsed_vimeo_url['path']; 3732 3733 // Add loop param for mejs bug - see #40977, not needed after #39686. 3734 $loop = $atts['loop'] ? '1' : '0'; 3735 $atts['src'] = add_query_arg( 'loop', $loop, $vimeo_src ); 3736 } 3737 } 3738 3739 /** 3740 * Filters the class attribute for the video shortcode output container. 3741 * 3742 * @since 3.6.0 3743 * @since 4.9.0 The `$atts` parameter was added. 3744 * 3745 * @param string $class CSS class or list of space-separated classes. 3746 * @param array $atts Array of video shortcode attributes. 3747 */ 3748 $atts['class'] = apply_filters( 'wp_video_shortcode_class', $atts['class'], $atts ); 3749 3750 $html_atts = array( 3751 'class' => $atts['class'], 3752 'id' => sprintf( 'video-%d-%d', $post_id, $instance ), 3753 'width' => absint( $atts['width'] ), 3754 'height' => absint( $atts['height'] ), 3755 'poster' => esc_url( $atts['poster'] ), 3756 'loop' => wp_validate_boolean( $atts['loop'] ), 3757 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), 3758 'muted' => wp_validate_boolean( $atts['muted'] ), 3759 'preload' => $atts['preload'], 3760 ); 3761 3762 // These ones should just be omitted altogether if they are blank. 3763 foreach ( array( 'poster', 'loop', 'autoplay', 'preload', 'muted' ) as $a ) { 3764 if ( empty( $html_atts[ $a ] ) ) { 3765 unset( $html_atts[ $a ] ); 3766 } 3767 } 3768 3769 $attr_strings = array(); 3770 foreach ( $html_atts as $attribute_name => $attribute_value ) { 3771 if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) { 3772 // Add boolean attributes without their value for true. 3773 $attr_strings[] = esc_attr( $attribute_name ); 3774 } elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) { 3775 // Handle the preload attribute with specific allowed values. 3776 $allowed_preload_values = array( 'none', 'metadata', 'auto' ); 3777 if ( in_array( $attribute_value, $allowed_preload_values, true ) ) { 3778 $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); 3779 } 3780 } elseif ( ! empty( $attribute_value ) ) { 3781 // For non-boolean attributes, add them with their value. 3782 $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); 3783 } 3784 } 3785 3786 $html = sprintf( '<video %s controls="controls">', implode( ' ', $attr_strings ) ); 3787 $fileurl = ''; 3788 $source = '<source type="%s" src="%s" />'; 3789 3790 foreach ( $default_types as $fallback ) { 3791 if ( ! empty( $atts[ $fallback ] ) ) { 3792 if ( empty( $fileurl ) ) { 3793 $fileurl = $atts[ $fallback ]; 3794 } 3795 if ( 'src' === $fallback && $is_youtube ) { 3796 $type = array( 'type' => 'video/youtube' ); 3797 } elseif ( 'src' === $fallback && $is_vimeo ) { 3798 $type = array( 'type' => 'video/vimeo' ); 3799 } else { 3800 $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() ); 3801 } 3802 $url = add_query_arg( '_', $instance, $atts[ $fallback ] ); 3803 $html .= sprintf( $source, $type['type'], esc_url( $url ) ); 3804 } 3805 } 3806 3807 if ( ! empty( $content ) ) { 3808 if ( str_contains( $content, "\n" ) ) { 3809 $content = str_replace( array( "\r\n", "\n", "\t" ), '', $content ); 3810 } 3811 $html .= trim( $content ); 3812 } 3813 3814 if ( 'mediaelement' === $library ) { 3815 $html .= wp_mediaelement_fallback( $fileurl ); 3816 } 3817 $html .= '</video>'; 3818 3819 $width_rule = ''; 3820 if ( ! empty( $atts['width'] ) ) { 3821 $width_rule = sprintf( 'width: %dpx;', $atts['width'] ); 3822 } 3823 $output = sprintf( '<div style="%s" class="wp-video">%s</div>', $width_rule, $html ); 3824 3825 /** 3826 * Filters the output of the video shortcode. 3827 * 3828 * @since 3.6.0 3829 * 3830 * @param string $output Video shortcode HTML output. 3831 * @param array $atts Array of video shortcode attributes. 3832 * @param string $video Video file. 3833 * @param int $post_id Post ID. 3834 * @param string $library Media library used for the video shortcode. 3835 */ 3836 return apply_filters( 'wp_video_shortcode', $output, $atts, $video, $post_id, $library ); 3837 } 3838 add_shortcode( 'video', 'wp_video_shortcode' ); 3839 3840 /** 3841 * Gets the previous image link that has the same post parent. 3842 * 3843 * @since 5.8.0 3844 * 3845 * @see get_adjacent_image_link() 3846 * 3847 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3848 * of width and height values in pixels (in that order). Default 'thumbnail'. 3849 * @param string|false $text Optional. Link text. Default false. 3850 * @return string Markup for previous image link. 3851 */ 3852 function get_previous_image_link( $size = 'thumbnail', $text = false ) { 3853 return get_adjacent_image_link( true, $size, $text ); 3854 } 3855 3856 /** 3857 * Displays previous image link that has the same post parent. 3858 * 3859 * @since 2.5.0 3860 * 3861 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3862 * of width and height values in pixels (in that order). Default 'thumbnail'. 3863 * @param string|false $text Optional. Link text. Default false. 3864 */ 3865 function previous_image_link( $size = 'thumbnail', $text = false ) { 3866 echo get_previous_image_link( $size, $text ); 3867 } 3868 3869 /** 3870 * Gets the next image link that has the same post parent. 3871 * 3872 * @since 5.8.0 3873 * 3874 * @see get_adjacent_image_link() 3875 * 3876 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3877 * of width and height values in pixels (in that order). Default 'thumbnail'. 3878 * @param string|false $text Optional. Link text. Default false. 3879 * @return string Markup for next image link. 3880 */ 3881 function get_next_image_link( $size = 'thumbnail', $text = false ) { 3882 return get_adjacent_image_link( false, $size, $text ); 3883 } 3884 3885 /** 3886 * Displays next image link that has the same post parent. 3887 * 3888 * @since 2.5.0 3889 * 3890 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3891 * of width and height values in pixels (in that order). Default 'thumbnail'. 3892 * @param string|false $text Optional. Link text. Default false. 3893 */ 3894 function next_image_link( $size = 'thumbnail', $text = false ) { 3895 echo get_next_image_link( $size, $text ); 3896 } 3897 3898 /** 3899 * Gets the next or previous image link that has the same post parent. 3900 * 3901 * Retrieves the current attachment object from the $post global. 3902 * 3903 * @since 5.8.0 3904 * 3905 * @param bool $prev Optional. Whether to display the next (false) or previous (true) link. Default true. 3906 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3907 * of width and height values in pixels (in that order). Default 'thumbnail'. 3908 * @param bool $text Optional. Link text. Default false. 3909 * @return string Markup for image link. 3910 */ 3911 function get_adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) { 3912 $post = get_post(); 3913 $attachments = array_values( 3914 get_children( 3915 array( 3916 'post_parent' => $post->post_parent, 3917 'post_status' => 'inherit', 3918 'post_type' => 'attachment', 3919 'post_mime_type' => 'image', 3920 'order' => 'ASC', 3921 'orderby' => 'menu_order ID', 3922 ) 3923 ) 3924 ); 3925 3926 foreach ( $attachments as $k => $attachment ) { 3927 if ( (int) $attachment->ID === (int) $post->ID ) { 3928 break; 3929 } 3930 } 3931 3932 $output = ''; 3933 $attachment_id = 0; 3934 3935 if ( $attachments ) { 3936 $k = $prev ? $k - 1 : $k + 1; 3937 3938 if ( isset( $attachments[ $k ] ) ) { 3939 $attachment_id = $attachments[ $k ]->ID; 3940 $attr = array( 'alt' => get_the_title( $attachment_id ) ); 3941 $output = wp_get_attachment_link( $attachment_id, $size, true, false, $text, $attr ); 3942 } 3943 } 3944 3945 $adjacent = $prev ? 'previous' : 'next'; 3946 3947 /** 3948 * Filters the adjacent image link. 3949 * 3950 * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency, 3951 * either 'next', or 'previous'. 3952 * 3953 * Possible hook names include: 3954 * 3955 * - `next_image_link` 3956 * - `previous_image_link` 3957 * 3958 * @since 3.5.0 3959 * 3960 * @param string $output Adjacent image HTML markup. 3961 * @param int $attachment_id Attachment ID 3962 * @param string|int[] $size Requested image size. Can be any registered image size name, or 3963 * an array of width and height values in pixels (in that order). 3964 * @param string $text Link text. 3965 */ 3966 return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); 3967 } 3968 3969 /** 3970 * Displays next or previous image link that has the same post parent. 3971 * 3972 * Retrieves the current attachment object from the $post global. 3973 * 3974 * @since 2.5.0 3975 * 3976 * @param bool $prev Optional. Whether to display the next (false) or previous (true) link. Default true. 3977 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array 3978 * of width and height values in pixels (in that order). Default 'thumbnail'. 3979 * @param bool $text Optional. Link text. Default false. 3980 */ 3981 function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) { 3982 echo get_adjacent_image_link( $prev, $size, $text ); 3983 } 3984 3985 /** 3986 * Retrieves taxonomies attached to given the attachment. 3987 * 3988 * @since 2.5.0 3989 * @since 4.7.0 Introduced the `$output` parameter. 3990 * 3991 * @param int|array|object $attachment Attachment ID, data array, or data object. 3992 * @param string $output Output type. 'names' to return an array of taxonomy names, 3993 * or 'objects' to return an array of taxonomy objects. 3994 * Default is 'names'. 3995 * @return string[]|WP_Taxonomy[] List of taxonomies or taxonomy names. Empty array on failure. 3996 */ 3997 function get_attachment_taxonomies( $attachment, $output = 'names' ) { 3998 if ( is_int( $attachment ) ) { 3999 $attachment = get_post( $attachment ); 4000 } elseif ( is_array( $attachment ) ) { 4001 $attachment = (object) $attachment; 4002 } 4003 4004 if ( ! is_object( $attachment ) ) { 4005 return array(); 4006 } 4007 4008 $file = get_attached_file( $attachment->ID ); 4009 $filename = wp_basename( $file ); 4010 4011 $objects = array( 'attachment' ); 4012 4013 if ( str_contains( $filename, '.' ) ) { 4014 $objects[] = 'attachment:' . substr( $filename, strrpos( $filename, '.' ) + 1 ); 4015 } 4016 4017 if ( ! empty( $attachment->post_mime_type ) ) { 4018 $objects[] = 'attachment:' . $attachment->post_mime_type; 4019 4020 if ( str_contains( $attachment->post_mime_type, '/' ) ) { 4021 foreach ( explode( '/', $attachment->post_mime_type ) as $token ) { 4022 if ( ! empty( $token ) ) { 4023 $objects[] = "attachment:$token"; 4024 } 4025 } 4026 } 4027 } 4028 4029 $taxonomies = array(); 4030 4031 foreach ( $objects as $object ) { 4032 $taxes = get_object_taxonomies( $object, $output ); 4033 4034 if ( $taxes ) { 4035 $taxonomies = array_merge( $taxonomies, $taxes ); 4036 } 4037 } 4038 4039 if ( 'names' === $output ) { 4040 $taxonomies = array_unique( $taxonomies ); 4041 } 4042 4043 return $taxonomies; 4044 } 4045 4046 /** 4047 * Retrieves all of the taxonomies that are registered for attachments. 4048 * 4049 * Handles mime-type-specific taxonomies such as attachment:image and attachment:video. 4050 * 4051 * @since 3.5.0 4052 * 4053 * @see get_taxonomies() 4054 * 4055 * @param string $output Optional. The type of taxonomy output to return. Accepts 'names' or 'objects'. 4056 * Default 'names'. 4057 * @return string[]|WP_Taxonomy[] Array of names or objects of registered taxonomies for attachments. 4058 */ 4059 function get_taxonomies_for_attachments( $output = 'names' ) { 4060 $taxonomies = array(); 4061 4062 foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) { 4063 foreach ( $taxonomy->object_type as $object_type ) { 4064 if ( 'attachment' === $object_type || str_starts_with( $object_type, 'attachment:' ) ) { 4065 if ( 'names' === $output ) { 4066 $taxonomies[] = $taxonomy->name; 4067 } else { 4068 $taxonomies[ $taxonomy->name ] = $taxonomy; 4069 } 4070 break; 4071 } 4072 } 4073 } 4074 4075 return $taxonomies; 4076 } 4077 4078 /** 4079 * Determines whether the value is an acceptable type for GD image functions. 4080 * 4081 * In PHP 8.0, the GD extension uses GdImage objects for its data structures. 4082 * This function checks if the passed value is either a GdImage object instance 4083 * or a resource of type `gd`. Any other type will return false. 4084 * 4085 * @since 5.6.0 4086 * 4087 * @param resource|GdImage|false $image A value to check the type for. 4088 * @return bool True if `$image` is either a GD image resource or a GdImage instance, 4089 * false otherwise. 4090 */ 4091 function is_gd_image( $image ) { 4092 if ( $image instanceof GdImage 4093 || is_resource( $image ) && 'gd' === get_resource_type( $image ) 4094 ) { 4095 return true; 4096 } 4097 4098 return false; 4099 } 4100 4101 /** 4102 * Creates a new GD image resource with transparency support. 4103 * 4104 * @todo Deprecate if possible. 4105 * 4106 * @since 2.9.0 4107 * 4108 * @param int $width Image width in pixels. 4109 * @param int $height Image height in pixels. 4110 * @return resource|GdImage|false The GD image resource or GdImage instance on success. 4111 * False on failure. 4112 */ 4113 function wp_imagecreatetruecolor( $width, $height ) { 4114 $img = imagecreatetruecolor( $width, $height ); 4115 4116 if ( is_gd_image( $img ) 4117 && function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' ) 4118 ) { 4119 imagealphablending( $img, false ); 4120 imagesavealpha( $img, true ); 4121 } 4122 4123 return $img; 4124 } 4125 4126 /** 4127 * Based on a supplied width/height example, returns the biggest possible dimensions based on the max width/height. 4128 * 4129 * @since 2.9.0 4130 * 4131 * @see wp_constrain_dimensions() 4132 * 4133 * @param int $example_width The width of an example embed. 4134 * @param int $example_height The height of an example embed. 4135 * @param int $max_width The maximum allowed width. 4136 * @param int $max_height The maximum allowed height. 4137 * @return int[] { 4138 * An array of maximum width and height values. 4139 * 4140 * @type int $0 The maximum width in pixels. 4141 * @type int $1 The maximum height in pixels. 4142 * } 4143 */ 4144 function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) { 4145 $example_width = (int) $example_width; 4146 $example_height = (int) $example_height; 4147 $max_width = (int) $max_width; 4148 $max_height = (int) $max_height; 4149 4150 return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height ); 4151 } 4152 4153 /** 4154 * Determines the maximum upload size allowed in php.ini. 4155 * 4156 * @since 2.5.0 4157 * 4158 * @return int Allowed upload size. 4159 */ 4160 function wp_max_upload_size() { 4161 $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) ); 4162 $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) ); 4163 4164 /** 4165 * Filters the maximum upload size allowed in php.ini. 4166 * 4167 * @since 2.5.0 4168 * 4169 * @param int $size Max upload size limit in bytes. 4170 * @param int $u_bytes Maximum upload filesize in bytes. 4171 * @param int $p_bytes Maximum size of POST data in bytes. 4172 */ 4173 return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); 4174 } 4175 4176 /** 4177 * Returns a WP_Image_Editor instance and loads file into it. 4178 * 4179 * @since 3.5.0 4180 * 4181 * @param string $path Path to the file to load. 4182 * @param array $args Optional. Additional arguments for retrieving the image editor. 4183 * Default empty array. 4184 * @return WP_Image_Editor|WP_Error The WP_Image_Editor object on success, 4185 * a WP_Error object otherwise. 4186 */ 4187 function wp_get_image_editor( $path, $args = array() ) { 4188 $args['path'] = $path; 4189 4190 // If the mime type is not set in args, try to extract and set it from the file. 4191 if ( ! isset( $args['mime_type'] ) ) { 4192 $file_info = wp_check_filetype( $args['path'] ); 4193 4194 /* 4195 * If $file_info['type'] is false, then we let the editor attempt to 4196 * figure out the file type, rather than forcing a failure based on extension. 4197 */ 4198 if ( isset( $file_info ) && $file_info['type'] ) { 4199 $args['mime_type'] = $file_info['type']; 4200 } 4201 } 4202 4203 // Check and set the output mime type mapped to the input type. 4204 if ( isset( $args['mime_type'] ) ) { 4205 $output_format = wp_get_image_editor_output_format( $path, $args['mime_type'] ); 4206 if ( isset( $output_format[ $args['mime_type'] ] ) ) { 4207 $args['output_mime_type'] = $output_format[ $args['mime_type'] ]; 4208 } 4209 } 4210 4211 $implementation = _wp_image_editor_choose( $args ); 4212 4213 if ( $implementation ) { 4214 $editor = new $implementation( $path ); 4215 $loaded = $editor->load(); 4216 4217 if ( is_wp_error( $loaded ) ) { 4218 return $loaded; 4219 } 4220 4221 return $editor; 4222 } 4223 4224 return new WP_Error( 'image_no_editor', __( 'No editor could be selected.' ) ); 4225 } 4226 4227 /** 4228 * Tests whether there is an editor that supports a given mime type or methods. 4229 * 4230 * @since 3.5.0 4231 * 4232 * @param string|array $args Optional. Array of arguments to retrieve the image editor supports. 4233 * Default empty array. 4234 * @return bool True if an eligible editor is found; false otherwise. 4235 */ 4236 function wp_image_editor_supports( $args = array() ) { 4237 return (bool) _wp_image_editor_choose( $args ); 4238 } 4239 4240 /** 4241 * Tests which editors are capable of supporting the request. 4242 * 4243 * @ignore 4244 * @since 3.5.0 4245 * 4246 * @param array $args Optional. Array of arguments for choosing a capable editor. Default empty array. 4247 * @return string|false Class name for the first editor that claims to support the request. 4248 * False if no editor claims to support the request. 4249 */ 4250 function _wp_image_editor_choose( $args = array() ) { 4251 require_once ABSPATH . WPINC . '/class-wp-image-editor.php'; 4252 require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php'; 4253 require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php'; 4254 require_once ABSPATH . WPINC . '/class-avif-info.php'; 4255 /** 4256 * Filters the list of image editing library classes. 4257 * 4258 * @since 3.5.0 4259 * 4260 * @param string[] $image_editors Array of available image editor class names. Defaults are 4261 * 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'. 4262 */ 4263 $implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) ); 4264 4265 $editors = wp_cache_get( 'wp_image_editor_choose', 'image_editor' ); 4266 4267 if ( ! is_array( $editors ) ) { 4268 $editors = array(); 4269 } 4270 4271 // Cache the chosen editor implementation based on specific args and available implementations. 4272 $cache_key = md5( serialize( array( $args, $implementations ) ) ); 4273 4274 if ( isset( $editors[ $cache_key ] ) ) { 4275 return $editors[ $cache_key ]; 4276 } 4277 4278 // Assume no support until a capable implementation is identified. 4279 $editor = false; 4280 4281 foreach ( $implementations as $implementation ) { 4282 if ( ! call_user_func( array( $implementation, 'test' ), $args ) ) { 4283 continue; 4284 } 4285 4286 // Implementation should support the passed mime type. 4287 if ( isset( $args['mime_type'] ) && 4288 ! call_user_func( 4289 array( $implementation, 'supports_mime_type' ), 4290 $args['mime_type'] 4291 ) ) { 4292 continue; 4293 } 4294 4295 // Implementation should support requested methods. 4296 if ( isset( $args['methods'] ) && 4297 array_diff( $args['methods'], get_class_methods( $implementation ) ) ) { 4298 4299 continue; 4300 } 4301 4302 // Implementation should ideally support the output mime type as well if set and different than the passed type. 4303 if ( 4304 isset( $args['mime_type'] ) && 4305 isset( $args['output_mime_type'] ) && 4306 $args['mime_type'] !== $args['output_mime_type'] && 4307 ! call_user_func( array( $implementation, 'supports_mime_type' ), $args['output_mime_type'] ) 4308 ) { 4309 /* 4310 * This implementation supports the input type but not the output type. 4311 * Keep looking to see if we can find an implementation that supports both. 4312 */ 4313 $editor = $implementation; 4314 continue; 4315 } 4316 4317 // Favor the implementation that supports both input and output mime types. 4318 $editor = $implementation; 4319 break; 4320 } 4321 4322 $editors[ $cache_key ] = $editor; 4323 4324 wp_cache_set( 'wp_image_editor_choose', $editors, 'image_editor', DAY_IN_SECONDS ); 4325 4326 return $editor; 4327 } 4328 4329 /** 4330 * Prints default Plupload arguments. 4331 * 4332 * @since 3.4.0 4333 */ 4334 function wp_plupload_default_settings() { 4335 $wp_scripts = wp_scripts(); 4336 4337 $data = $wp_scripts->get_data( 'wp-plupload', 'data' ); 4338 if ( $data && str_contains( $data, '_wpPluploadSettings' ) ) { 4339 return; 4340 } 4341 4342 $max_upload_size = wp_max_upload_size(); 4343 $allowed_extensions = array_keys( get_allowed_mime_types() ); 4344 $extensions = array(); 4345 foreach ( $allowed_extensions as $extension ) { 4346 $extensions = array_merge( $extensions, explode( '|', $extension ) ); 4347 } 4348 4349 /* 4350 * Since 4.9 the `runtimes` setting is hardcoded in our version of Plupload to `html5,html4`, 4351 * and the `flash_swf_url` and `silverlight_xap_url` are not used. 4352 */ 4353 $defaults = array( 4354 'file_data_name' => 'async-upload', // Key passed to $_FILE. 4355 'url' => admin_url( 'async-upload.php', 'relative' ), 4356 'filters' => array( 4357 'max_file_size' => $max_upload_size . 'b', 4358 'mime_types' => array( array( 'extensions' => implode( ',', $extensions ) ) ), 4359 ), 4360 ); 4361 4362 /* 4363 * Currently only iOS Safari supports multiple files uploading, 4364 * but iOS 7.x has a bug that prevents uploading of videos when enabled. 4365 * See #29602. 4366 */ 4367 if ( wp_is_mobile() 4368 && str_contains( $_SERVER['HTTP_USER_AGENT'], 'OS 7_' ) 4369 && str_contains( $_SERVER['HTTP_USER_AGENT'], 'like Mac OS X' ) 4370 ) { 4371 $defaults['multi_selection'] = false; 4372 } 4373 4374 // Check if WebP images can be edited. 4375 if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/webp' ) ) ) { 4376 $defaults['webp_upload_error'] = true; 4377 } 4378 4379 // Check if AVIF images can be edited. 4380 if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/avif' ) ) ) { 4381 $defaults['avif_upload_error'] = true; 4382 } 4383 4384 // Check if HEIC images can be edited. 4385 if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) { 4386 $defaults['heic_upload_error'] = true; 4387 } 4388 4389 /** 4390 * Filters the Plupload default settings. 4391 * 4392 * @since 3.4.0 4393 * 4394 * @param array $defaults Default Plupload settings array. 4395 */ 4396 $defaults = apply_filters( 'plupload_default_settings', $defaults ); 4397 4398 $params = array( 4399 'action' => 'upload-attachment', 4400 ); 4401 4402 /** 4403 * Filters the Plupload default parameters. 4404 * 4405 * @since 3.4.0 4406 * 4407 * @param array $params Default Plupload parameters array. 4408 */ 4409 $params = apply_filters( 'plupload_default_params', $params ); 4410 4411 $params['_wpnonce'] = wp_create_nonce( 'media-form' ); 4412 4413 $defaults['multipart_params'] = $params; 4414 4415 $settings = array( 4416 'defaults' => $defaults, 4417 'browser' => array( 4418 'mobile' => wp_is_mobile(), 4419 'supported' => _device_can_upload(), 4420 ), 4421 'limitExceeded' => is_multisite() && ! is_upload_space_available(), 4422 ); 4423 4424 $script = 'var _wpPluploadSettings = ' . wp_json_encode( $settings ) . ';'; 4425 4426 if ( $data ) { 4427 $script = "$data\n$script"; 4428 } 4429 4430 $wp_scripts->add_data( 'wp-plupload', 'data', $script ); 4431 } 4432 4433 /** 4434 * Prepares an attachment post object for JS, where it is expected 4435 * to be JSON-encoded and fit into an Attachment model. 4436 * 4437 * @since 3.5.0 4438 * 4439 * @param int|WP_Post $attachment Attachment ID or object. 4440 * @return array|void { 4441 * Array of attachment details, or void if the parameter does not correspond to an attachment. 4442 * 4443 * @type string $alt Alt text of the attachment. 4444 * @type string $author ID of the attachment author, as a string. 4445 * @type string $authorName Name of the attachment author. 4446 * @type string $caption Caption for the attachment. 4447 * @type array $compat Containing item and meta. 4448 * @type string $context Context, whether it's used as the site icon for example. 4449 * @type int $date Uploaded date, timestamp in milliseconds. 4450 * @type string $dateFormatted Formatted date (e.g. June 29, 2018). 4451 * @type string $description Description of the attachment. 4452 * @type string $editLink URL to the edit page for the attachment. 4453 * @type string $filename File name of the attachment. 4454 * @type string $filesizeHumanReadable Filesize of the attachment in human readable format (e.g. 1 MB). 4455 * @type int $filesizeInBytes Filesize of the attachment in bytes. 4456 * @type int $height If the attachment is an image, represents the height of the image in pixels. 4457 * @type string $icon Icon URL of the attachment (e.g. /wp-includes/images/media/archive.png). 4458 * @type int $id ID of the attachment. 4459 * @type string $link URL to the attachment. 4460 * @type int $menuOrder Menu order of the attachment post. 4461 * @type array $meta Meta data for the attachment. 4462 * @type string $mime Mime type of the attachment (e.g. image/jpeg or application/zip). 4463 * @type int $modified Last modified, timestamp in milliseconds. 4464 * @type string $name Name, same as title of the attachment. 4465 * @type array $nonces Nonces for update, delete and edit. 4466 * @type string $orientation If the attachment is an image, represents the image orientation 4467 * (landscape or portrait). 4468 * @type array $sizes If the attachment is an image, contains an array of arrays 4469 * for the images sizes: thumbnail, medium, large, and full. 4470 * @type string $status Post status of the attachment (usually 'inherit'). 4471 * @type string $subtype Mime subtype of the attachment (usually the last part, e.g. jpeg or zip). 4472 * @type string $title Title of the attachment (usually slugified file name without the extension). 4473 * @type string $type Type of the attachment (usually first part of the mime type, e.g. image). 4474 * @type int $uploadedTo Parent post to which the attachment was uploaded. 4475 * @type string $uploadedToLink URL to the edit page of the parent post of the attachment. 4476 * @type string $uploadedToTitle Post title of the parent of the attachment. 4477 * @type string $url Direct URL to the attachment file (from wp-content). 4478 * @type int $width If the attachment is an image, represents the width of the image in pixels. 4479 * } 4480 */ 4481 function wp_prepare_attachment_for_js( $attachment ) { 4482 $attachment = get_post( $attachment ); 4483 4484 if ( ! $attachment ) { 4485 return; 4486 } 4487 4488 if ( 'attachment' !== $attachment->post_type ) { 4489 return; 4490 } 4491 4492 $meta = wp_get_attachment_metadata( $attachment->ID ); 4493 if ( str_contains( $attachment->post_mime_type, '/' ) ) { 4494 list( $type, $subtype ) = explode( '/', $attachment->post_mime_type ); 4495 } else { 4496 list( $type, $subtype ) = array( $attachment->post_mime_type, '' ); 4497 } 4498 4499 $attachment_url = wp_get_attachment_url( $attachment->ID ); 4500 $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url ); 4501 4502 $response = array( 4503 'id' => $attachment->ID, 4504 'title' => $attachment->post_title, 4505 'filename' => wp_basename( get_attached_file( $attachment->ID ) ), 4506 'url' => $attachment_url, 4507 'link' => get_attachment_link( $attachment->ID ), 4508 'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ), 4509 'author' => $attachment->post_author, 4510 'description' => $attachment->post_content, 4511 'caption' => $attachment->post_excerpt, 4512 'name' => $attachment->post_name, 4513 'status' => $attachment->post_status, 4514 'uploadedTo' => $attachment->post_parent, 4515 'date' => strtotime( $attachment->post_date_gmt ) * 1000, 4516 'modified' => strtotime( $attachment->post_modified_gmt ) * 1000, 4517 'menuOrder' => $attachment->menu_order, 4518 'mime' => $attachment->post_mime_type, 4519 'type' => $type, 4520 'subtype' => $subtype, 4521 'icon' => wp_mime_type_icon( $attachment->ID, '.svg' ), 4522 'dateFormatted' => mysql2date( __( 'F j, Y' ), $attachment->post_date ), 4523 'nonces' => array( 4524 'update' => false, 4525 'delete' => false, 4526 'edit' => false, 4527 ), 4528 'editLink' => false, 4529 'meta' => false, 4530 ); 4531 4532 $author = new WP_User( $attachment->post_author ); 4533 4534 if ( $author->exists() ) { 4535 $author_name = $author->display_name ? $author->display_name : $author->nickname; 4536 $response['authorName'] = html_entity_decode( $author_name, ENT_QUOTES, get_bloginfo( 'charset' ) ); 4537 $response['authorLink'] = get_edit_user_link( $author->ID ); 4538 } else { 4539 $response['authorName'] = __( '(no author)' ); 4540 } 4541 4542 if ( $attachment->post_parent ) { 4543 $post_parent = get_post( $attachment->post_parent ); 4544 if ( $post_parent ) { 4545 $response['uploadedToTitle'] = $post_parent->post_title ? $post_parent->post_title : __( '(no title)' ); 4546 $response['uploadedToLink'] = get_edit_post_link( $attachment->post_parent, 'raw' ); 4547 } 4548 } 4549 4550 $attached_file = get_attached_file( $attachment->ID ); 4551 4552 if ( isset( $meta['filesize'] ) ) { 4553 $bytes = $meta['filesize']; 4554 } elseif ( file_exists( $attached_file ) ) { 4555 $bytes = wp_filesize( $attached_file ); 4556 } else { 4557 $bytes = ''; 4558 } 4559 4560 if ( $bytes ) { 4561 $response['filesizeInBytes'] = $bytes; 4562 $response['filesizeHumanReadable'] = size_format( $bytes ); 4563 } 4564 4565 $context = get_post_meta( $attachment->ID, '_wp_attachment_context', true ); 4566 $response['context'] = ( $context ) ? $context : ''; 4567 4568 if ( current_user_can( 'edit_post', $attachment->ID ) ) { 4569 $response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID ); 4570 $response['nonces']['edit'] = wp_create_nonce( 'image_editor-' . $attachment->ID ); 4571 $response['editLink'] = get_edit_post_link( $attachment->ID, 'raw' ); 4572 } 4573 4574 if ( current_user_can( 'delete_post', $attachment->ID ) ) { 4575 $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID ); 4576 } 4577 4578 if ( $meta && ( 'image' === $type || ! empty( $meta['sizes'] ) ) ) { 4579 $sizes = array(); 4580 4581 /** This filter is documented in wp-admin/includes/media.php */ 4582 $possible_sizes = apply_filters( 4583 'image_size_names_choose', 4584 array( 4585 'thumbnail' => __( 'Thumbnail' ), 4586 'medium' => __( 'Medium' ), 4587 'large' => __( 'Large' ), 4588 'full' => __( 'Full Size' ), 4589 ) 4590 ); 4591 unset( $possible_sizes['full'] ); 4592 4593 /* 4594 * Loop through all potential sizes that may be chosen. Try to do this with some efficiency. 4595 * First: run the image_downsize filter. If it returns something, we can use its data. 4596 * If the filter does not return something, then image_downsize() is just an expensive way 4597 * to check the image metadata, which we do second. 4598 */ 4599 foreach ( $possible_sizes as $size => $label ) { 4600 4601 /** This filter is documented in wp-includes/media.php */ 4602 $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ); 4603 4604 if ( $downsize ) { 4605 if ( empty( $downsize[3] ) ) { 4606 continue; 4607 } 4608 4609 $sizes[ $size ] = array( 4610 'height' => $downsize[2], 4611 'width' => $downsize[1], 4612 'url' => $downsize[0], 4613 'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape', 4614 ); 4615 } elseif ( isset( $meta['sizes'][ $size ] ) ) { 4616 // Nothing from the filter, so consult image metadata if we have it. 4617 $size_meta = $meta['sizes'][ $size ]; 4618 4619 /* 4620 * We have the actual image size, but might need to further constrain it if content_width is narrower. 4621 * Thumbnail, medium, and full sizes are also checked against the site's height/width options. 4622 */ 4623 list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' ); 4624 4625 $sizes[ $size ] = array( 4626 'height' => $height, 4627 'width' => $width, 4628 'url' => $base_url . $size_meta['file'], 4629 'orientation' => $height > $width ? 'portrait' : 'landscape', 4630 ); 4631 } 4632 } 4633 4634 if ( 'image' === $type ) { 4635 if ( ! empty( $meta['original_image'] ) ) { 4636 $response['originalImageURL'] = wp_get_original_image_url( $attachment->ID ); 4637 $response['originalImageName'] = wp_basename( wp_get_original_image_path( $attachment->ID ) ); 4638 } 4639 4640 $sizes['full'] = array( 'url' => $attachment_url ); 4641 4642 if ( isset( $meta['height'], $meta['width'] ) ) { 4643 $sizes['full']['height'] = $meta['height']; 4644 $sizes['full']['width'] = $meta['width']; 4645 $sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape'; 4646 } 4647 4648 $response = array_merge( $response, $sizes['full'] ); 4649 } elseif ( $meta['sizes']['full']['file'] ) { 4650 $sizes['full'] = array( 4651 'url' => $base_url . $meta['sizes']['full']['file'], 4652 'height' => $meta['sizes']['full']['height'], 4653 'width' => $meta['sizes']['full']['width'], 4654 'orientation' => $meta['sizes']['full']['height'] > $meta['sizes']['full']['width'] ? 'portrait' : 'landscape', 4655 ); 4656 } 4657 4658 $response = array_merge( $response, array( 'sizes' => $sizes ) ); 4659 } 4660 4661 if ( $meta && 'video' === $type ) { 4662 if ( isset( $meta['width'] ) ) { 4663 $response['width'] = (int) $meta['width']; 4664 } 4665 if ( isset( $meta['height'] ) ) { 4666 $response['height'] = (int) $meta['height']; 4667 } 4668 } 4669 4670 if ( $meta && ( 'audio' === $type || 'video' === $type ) ) { 4671 if ( isset( $meta['length_formatted'] ) ) { 4672 $response['fileLength'] = $meta['length_formatted']; 4673 $response['fileLengthHumanReadable'] = human_readable_duration( $meta['length_formatted'] ); 4674 } 4675 4676 $response['meta'] = array(); 4677 foreach ( wp_get_attachment_id3_keys( $attachment, 'js' ) as $key => $label ) { 4678 $response['meta'][ $key ] = false; 4679 4680 if ( ! empty( $meta[ $key ] ) ) { 4681 $response['meta'][ $key ] = $meta[ $key ]; 4682 } 4683 } 4684 4685 $id = get_post_thumbnail_id( $attachment->ID ); 4686 if ( ! empty( $id ) ) { 4687 list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' ); 4688 $response['image'] = compact( 'src', 'width', 'height' ); 4689 list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' ); 4690 $response['thumb'] = compact( 'src', 'width', 'height' ); 4691 } else { 4692 $src = wp_mime_type_icon( $attachment->ID, '.svg' ); 4693 $width = 48; 4694 $height = 64; 4695 $response['image'] = compact( 'src', 'width', 'height' ); 4696 $response['thumb'] = compact( 'src', 'width', 'height' ); 4697 } 4698 } 4699 4700 if ( function_exists( 'get_compat_media_markup' ) ) { 4701 $response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) ); 4702 } 4703 4704 if ( function_exists( 'get_media_states' ) ) { 4705 $media_states = get_media_states( $attachment ); 4706 if ( ! empty( $media_states ) ) { 4707 $response['mediaStates'] = implode( ', ', $media_states ); 4708 } 4709 } 4710 4711 /** 4712 * Filters the attachment data prepared for JavaScript. 4713 * 4714 * @since 3.5.0 4715 * 4716 * @param array $response Array of prepared attachment data. See {@see wp_prepare_attachment_for_js()}. 4717 * @param WP_Post $attachment Attachment object. 4718 * @param array|false $meta Array of attachment meta data, or false if there is none. 4719 */ 4720 return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta ); 4721 } 4722 4723 /** 4724 * Enqueues all scripts, styles, settings, and templates necessary to use 4725 * all media JS APIs. 4726 * 4727 * @since 3.5.0 4728 * 4729 * @global int $content_width 4730 * @global wpdb $wpdb WordPress database abstraction object. 4731 * @global WP_Locale $wp_locale WordPress date and time locale object. 4732 * 4733 * @param array $args { 4734 * Arguments for enqueuing media scripts. 4735 * 4736 * @type int|WP_Post $post Post ID or post object. 4737 * } 4738 */ 4739 function wp_enqueue_media( $args = array() ) { 4740 // Enqueue me just once per page, please. 4741 if ( did_action( 'wp_enqueue_media' ) ) { 4742 return; 4743 } 4744 4745 global $content_width, $wpdb, $wp_locale; 4746 4747 $defaults = array( 4748 'post' => null, 4749 ); 4750 $args = wp_parse_args( $args, $defaults ); 4751 4752 /* 4753 * We're going to pass the old thickbox media tabs to `media_upload_tabs` 4754 * to ensure plugins will work. We will then unset those tabs. 4755 */ 4756 $tabs = array( 4757 // handler action suffix => tab label 4758 'type' => '', 4759 'type_url' => '', 4760 'gallery' => '', 4761 'library' => '', 4762 ); 4763 4764 /** This filter is documented in wp-admin/includes/media.php */ 4765 $tabs = apply_filters( 'media_upload_tabs', $tabs ); 4766 unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] ); 4767 4768 $props = array( 4769 'link' => get_option( 'image_default_link_type' ), // DB default is 'file'. 4770 'align' => get_option( 'image_default_align' ), // Empty default. 4771 'size' => get_option( 'image_default_size' ), // Empty default. 4772 ); 4773 4774 $exts = array_merge( wp_get_audio_extensions(), wp_get_video_extensions() ); 4775 $mimes = get_allowed_mime_types(); 4776 $ext_mimes = array(); 4777 foreach ( $exts as $ext ) { 4778 foreach ( $mimes as $ext_preg => $mime_match ) { 4779 if ( preg_match( '#' . $ext . '#i', $ext_preg ) ) { 4780 $ext_mimes[ $ext ] = $mime_match; 4781 break; 4782 } 4783 } 4784 } 4785 4786 /** 4787 * Allows showing or hiding the "Create Audio Playlist" button in the media library. 4788 * 4789 * By default, the "Create Audio Playlist" button will always be shown in 4790 * the media library. If this filter returns `null`, a query will be run 4791 * to determine whether the media library contains any audio items. This 4792 * was the default behavior prior to version 4.8.0, but this query is 4793 * expensive for large media libraries. 4794 * 4795 * @since 4.7.4 4796 * @since 4.8.0 The filter's default value is `true` rather than `null`. 4797 * 4798 * @link https://core.trac.wordpress.org/ticket/31071 4799 * 4800 * @param bool|null $show Whether to show the button, or `null` to decide based 4801 * on whether any audio files exist in the media library. 4802 */ 4803 $show_audio_playlist = apply_filters( 'media_library_show_audio_playlist', true ); 4804 if ( null === $show_audio_playlist ) { 4805 $show_audio_playlist = $wpdb->get_var( 4806 "SELECT ID 4807 FROM $wpdb->posts 4808 WHERE post_type = 'attachment' 4809 AND post_mime_type LIKE 'audio%' 4810 LIMIT 1" 4811 ); 4812 } 4813 4814 /** 4815 * Allows showing or hiding the "Create Video Playlist" button in the media library. 4816 * 4817 * By default, the "Create Video Playlist" button will always be shown in 4818 * the media library. If this filter returns `null`, a query will be run 4819 * to determine whether the media library contains any video items. This 4820 * was the default behavior prior to version 4.8.0, but this query is 4821 * expensive for large media libraries. 4822 * 4823 * @since 4.7.4 4824 * @since 4.8.0 The filter's default value is `true` rather than `null`. 4825 * 4826 * @link https://core.trac.wordpress.org/ticket/31071 4827 * 4828 * @param bool|null $show Whether to show the button, or `null` to decide based 4829 * on whether any video files exist in the media library. 4830 */ 4831 $show_video_playlist = apply_filters( 'media_library_show_video_playlist', true ); 4832 if ( null === $show_video_playlist ) { 4833 $show_video_playlist = $wpdb->get_var( 4834 "SELECT ID 4835 FROM $wpdb->posts 4836 WHERE post_type = 'attachment' 4837 AND post_mime_type LIKE 'video%' 4838 LIMIT 1" 4839 ); 4840 } 4841 4842 /** 4843 * Allows overriding the list of months displayed in the media library. 4844 * 4845 * By default (if this filter does not return an array), a query will be 4846 * run to determine the months that have media items. This query can be 4847 * expensive for large media libraries, so it may be desirable for sites to 4848 * override this behavior. 4849 * 4850 * @since 4.7.4 4851 * 4852 * @link https://core.trac.wordpress.org/ticket/31071 4853 * 4854 * @param stdClass[]|null $months An array of objects with `month` and `year` 4855 * properties, or `null` for default behavior. 4856 */ 4857 $months = apply_filters( 'media_library_months_with_files', null ); 4858 if ( ! is_array( $months ) ) { 4859 $months = $wpdb->get_results( 4860 $wpdb->prepare( 4861 "SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month 4862 FROM $wpdb->posts 4863 WHERE post_type = %s 4864 ORDER BY post_date DESC", 4865 'attachment' 4866 ) 4867 ); 4868 } 4869 foreach ( $months as $month_year ) { 4870 $month_year->text = sprintf( 4871 /* translators: 1: Month, 2: Year. */ 4872 __( '%1$s %2$d' ), 4873 $wp_locale->get_month( $month_year->month ), 4874 $month_year->year 4875 ); 4876 } 4877 4878 /** 4879 * Filters whether the Media Library grid has infinite scrolling. Default `false`. 4880 * 4881 * @since 5.8.0 4882 * 4883 * @param bool $infinite Whether the Media Library grid has infinite scrolling. 4884 */ 4885 $infinite_scrolling = apply_filters( 'media_library_infinite_scrolling', false ); 4886 4887 $settings = array( 4888 'tabs' => $tabs, 4889 'tabUrl' => add_query_arg( array( 'chromeless' => true ), admin_url( 'media-upload.php' ) ), 4890 'mimeTypes' => wp_list_pluck( get_post_mime_types(), 0 ), 4891 /** This filter is documented in wp-admin/includes/media.php */ 4892 'captions' => ! apply_filters( 'disable_captions', '' ), 4893 'nonce' => array( 4894 'sendToEditor' => wp_create_nonce( 'media-send-to-editor' ), 4895 'setAttachmentThumbnail' => wp_create_nonce( 'set-attachment-thumbnail' ), 4896 ), 4897 'post' => array( 4898 'id' => 0, 4899 ), 4900 'defaultProps' => $props, 4901 'attachmentCounts' => array( 4902 'audio' => ( $show_audio_playlist ) ? 1 : 0, 4903 'video' => ( $show_video_playlist ) ? 1 : 0, 4904 ), 4905 'oEmbedProxyUrl' => rest_url( 'oembed/1.0/proxy' ), 4906 'embedExts' => $exts, 4907 'embedMimes' => $ext_mimes, 4908 'contentWidth' => $content_width, 4909 'months' => $months, 4910 'mediaTrash' => MEDIA_TRASH ? 1 : 0, 4911 'infiniteScrolling' => ( $infinite_scrolling ) ? 1 : 0, 4912 ); 4913 4914 $post = null; 4915 if ( isset( $args['post'] ) ) { 4916 $post = get_post( $args['post'] ); 4917 $settings['post'] = array( 4918 'id' => $post->ID, 4919 'nonce' => wp_create_nonce( 'update-post_' . $post->ID ), 4920 ); 4921 4922 $thumbnail_support = current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' ); 4923 if ( ! $thumbnail_support && 'attachment' === $post->post_type && $post->post_mime_type ) { 4924 if ( wp_attachment_is( 'audio', $post ) ) { 4925 $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' ); 4926 } elseif ( wp_attachment_is( 'video', $post ) ) { 4927 $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' ); 4928 } 4929 } 4930 4931 if ( $thumbnail_support ) { 4932 $featured_image_id = get_post_meta( $post->ID, '_thumbnail_id', true ); 4933 $settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1; 4934 } 4935 } 4936 4937 if ( $post ) { 4938 $post_type_object = get_post_type_object( $post->post_type ); 4939 } else { 4940 $post_type_object = get_post_type_object( 'post' ); 4941 } 4942 4943 $strings = array( 4944 // Generic. 4945 'mediaFrameDefaultTitle' => __( 'Media' ), 4946 'url' => __( 'URL' ), 4947 'addMedia' => __( 'Add media' ), 4948 'search' => __( 'Search' ), 4949 'select' => __( 'Select' ), 4950 'cancel' => __( 'Cancel' ), 4951 'update' => __( 'Update' ), 4952 'replace' => __( 'Replace' ), 4953 'remove' => __( 'Remove' ), 4954 'back' => __( 'Back' ), 4955 /* 4956 * translators: This is a would-be plural string used in the media manager. 4957 * If there is not a word you can use in your language to avoid issues with the 4958 * lack of plural support here, turn it into "selected: %d" then translate it. 4959 */ 4960 'selected' => __( '%d selected' ), 4961 'dragInfo' => __( 'Drag and drop to reorder media files.' ), 4962 4963 // Upload. 4964 'uploadFilesTitle' => __( 'Upload files' ), 4965 'uploadImagesTitle' => __( 'Upload images' ), 4966 4967 // Library. 4968 'mediaLibraryTitle' => __( 'Media Library' ), 4969 'insertMediaTitle' => __( 'Add media' ), 4970 'createNewGallery' => __( 'Create a new gallery' ), 4971 'createNewPlaylist' => __( 'Create a new playlist' ), 4972 'createNewVideoPlaylist' => __( 'Create a new video playlist' ), 4973 'returnToLibrary' => __( '← Go to library' ), 4974 'allMediaItems' => __( 'All media items' ), 4975 'allDates' => __( 'All dates' ), 4976 'noItemsFound' => __( 'No items found.' ), 4977 'insertIntoPost' => $post_type_object->labels->insert_into_item, 4978 'unattached' => _x( 'Unattached', 'media items' ), 4979 'mine' => _x( 'Mine', 'media items' ), 4980 'trash' => _x( 'Trash', 'noun' ), 4981 'uploadedToThisPost' => $post_type_object->labels->uploaded_to_this_item, 4982 'warnDelete' => __( "You are about to permanently delete this item from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ), 4983 'warnBulkDelete' => __( "You are about to permanently delete these items from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ), 4984 'warnBulkTrash' => __( "You are about to trash these items.\n 'Cancel' to stop, 'OK' to delete." ), 4985 'bulkSelect' => __( 'Bulk select' ), 4986 'trashSelected' => __( 'Move to Trash' ), 4987 'restoreSelected' => __( 'Restore from Trash' ), 4988 'deletePermanently' => __( 'Delete permanently' ), 4989 'errorDeleting' => __( 'Error in deleting the attachment.' ), 4990 'apply' => __( 'Apply' ), 4991 'filterByDate' => __( 'Filter by date' ), 4992 'filterByType' => __( 'Filter by type' ), 4993 'searchLabel' => __( 'Search media' ), 4994 'searchMediaLabel' => __( 'Search media' ), // Backward compatibility pre-5.3. 4995 'searchMediaPlaceholder' => __( 'Search media items...' ), // Placeholder (no ellipsis), backward compatibility pre-5.3. 4996 /* translators: %d: Number of attachments found in a search. */ 4997 'mediaFound' => __( 'Number of media items found: %d' ), 4998 'noMedia' => __( 'No media items found.' ), 4999 'noMediaTryNewSearch' => __( 'No media items found. Try a different search.' ), 5000 5001 // Library Details. 5002 'attachmentDetails' => __( 'Attachment details' ), 5003 5004 // From URL. 5005 'insertFromUrlTitle' => __( 'Insert from URL' ), 5006 5007 // Featured Images. 5008 'setFeaturedImageTitle' => $post_type_object->labels->featured_image, 5009 'setFeaturedImage' => $post_type_object->labels->set_featured_image, 5010 5011 // Gallery. 5012 'createGalleryTitle' => __( 'Create gallery' ), 5013 'editGalleryTitle' => __( 'Edit gallery' ), 5014 'cancelGalleryTitle' => __( '← Cancel gallery' ), 5015 'insertGallery' => __( 'Insert gallery' ), 5016 'updateGallery' => __( 'Update gallery' ), 5017 'addToGallery' => __( 'Add to gallery' ), 5018 'addToGalleryTitle' => __( 'Add to gallery' ), 5019 'reverseOrder' => __( 'Reverse order' ), 5020 5021 // Edit Image. 5022 'imageDetailsTitle' => __( 'Image details' ), 5023 'imageReplaceTitle' => __( 'Replace image' ), 5024 'imageDetailsCancel' => __( 'Cancel edit' ), 5025 'editImage' => __( 'Edit image' ), 5026 5027 // Crop Image. 5028 'chooseImage' => __( 'Choose image' ), 5029 'selectAndCrop' => __( 'Select and crop' ), 5030 'skipCropping' => __( 'Skip cropping' ), 5031 'cropImage' => __( 'Crop image' ), 5032 'cropYourImage' => __( 'Crop your image' ), 5033 'cropping' => __( 'Cropping…' ), 5034 /* translators: 1: Suggested width number, 2: Suggested height number. */ 5035 'suggestedDimensions' => __( 'Suggested image dimensions: %1$s by %2$s pixels.' ), 5036 'cropError' => __( 'There has been an error cropping your image.' ), 5037 5038 // Edit Audio. 5039 'audioDetailsTitle' => __( 'Audio details' ), 5040 'audioReplaceTitle' => __( 'Replace audio' ), 5041 'audioAddSourceTitle' => __( 'Add audio source' ), 5042 'audioDetailsCancel' => __( 'Cancel edit' ), 5043 5044 // Edit Video. 5045 'videoDetailsTitle' => __( 'Video details' ), 5046 'videoReplaceTitle' => __( 'Replace video' ), 5047 'videoAddSourceTitle' => __( 'Add video source' ), 5048 'videoDetailsCancel' => __( 'Cancel edit' ), 5049 'videoSelectPosterImageTitle' => __( 'Select poster image' ), 5050 'videoAddTrackTitle' => __( 'Add subtitles' ), 5051 5052 // Playlist. 5053 'playlistDragInfo' => __( 'Drag and drop to reorder tracks.' ), 5054 'createPlaylistTitle' => __( 'Create audio playlist' ), 5055 'editPlaylistTitle' => __( 'Edit audio playlist' ), 5056 'cancelPlaylistTitle' => __( '← Cancel audio playlist' ), 5057 'insertPlaylist' => __( 'Insert audio playlist' ), 5058 'updatePlaylist' => __( 'Update audio playlist' ), 5059 'addToPlaylist' => __( 'Add to audio playlist' ), 5060 'addToPlaylistTitle' => __( 'Add to Audio Playlist' ), 5061 5062 // Video Playlist. 5063 'videoPlaylistDragInfo' => __( 'Drag and drop to reorder videos.' ), 5064 'createVideoPlaylistTitle' => __( 'Create video playlist' ), 5065 'editVideoPlaylistTitle' => __( 'Edit video playlist' ), 5066 'cancelVideoPlaylistTitle' => __( '← Cancel video playlist' ), 5067 'insertVideoPlaylist' => __( 'Insert video playlist' ), 5068 'updateVideoPlaylist' => __( 'Update video playlist' ), 5069 'addToVideoPlaylist' => __( 'Add to video playlist' ), 5070 'addToVideoPlaylistTitle' => __( 'Add to video Playlist' ), 5071 5072 // Headings. 5073 'filterAttachments' => __( 'Filter media' ), 5074 'attachmentsList' => __( 'Media list' ), 5075 ); 5076 5077 /** 5078 * Filters the media view settings. 5079 * 5080 * @since 3.5.0 5081 * 5082 * @param array $settings List of media view settings. 5083 * @param WP_Post $post Post object. 5084 */ 5085 $settings = apply_filters( 'media_view_settings', $settings, $post ); 5086 5087 /** 5088 * Filters the media view strings. 5089 * 5090 * @since 3.5.0 5091 * 5092 * @param string[] $strings Array of media view strings keyed by the name they'll be referenced by in JavaScript. 5093 * @param WP_Post $post Post object. 5094 */ 5095 $strings = apply_filters( 'media_view_strings', $strings, $post ); 5096 5097 $strings['settings'] = $settings; 5098 5099 /* 5100 * Ensure we enqueue media-editor first, that way media-views 5101 * is registered internally before we try to localize it. See #24724. 5102 */ 5103 wp_enqueue_script( 'media-editor' ); 5104 wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings ); 5105 5106 wp_enqueue_script( 'media-audiovideo' ); 5107 wp_enqueue_style( 'media-views' ); 5108 if ( is_admin() ) { 5109 wp_enqueue_script( 'mce-view' ); 5110 wp_enqueue_script( 'image-edit' ); 5111 } 5112 wp_enqueue_style( 'imgareaselect' ); 5113 wp_plupload_default_settings(); 5114 5115 require_once ABSPATH . WPINC . '/media-template.php'; 5116 add_action( 'admin_footer', 'wp_print_media_templates' ); 5117 add_action( 'wp_footer', 'wp_print_media_templates' ); 5118 add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' ); 5119 5120 /** 5121 * Fires at the conclusion of wp_enqueue_media(). 5122 * 5123 * @since 3.5.0 5124 */ 5125 do_action( 'wp_enqueue_media' ); 5126 } 5127 5128 /** 5129 * Retrieves media attached to the passed post. 5130 * 5131 * @since 3.6.0 5132 * 5133 * @param string $type Mime type. 5134 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 5135 * @return WP_Post[] Array of media attached to the given post. 5136 */ 5137 function get_attached_media( $type, $post = 0 ) { 5138 $post = get_post( $post ); 5139 5140 if ( ! $post ) { 5141 return array(); 5142 } 5143 5144 $args = array( 5145 'post_parent' => $post->ID, 5146 'post_type' => 'attachment', 5147 'post_mime_type' => $type, 5148 'posts_per_page' => -1, 5149 'orderby' => 'menu_order', 5150 'order' => 'ASC', 5151 ); 5152 5153 /** 5154 * Filters arguments used to retrieve media attached to the given post. 5155 * 5156 * @since 3.6.0 5157 * 5158 * @param array $args Post query arguments. 5159 * @param string $type Mime type of the desired media. 5160 * @param WP_Post $post Post object. 5161 */ 5162 $args = apply_filters( 'get_attached_media_args', $args, $type, $post ); 5163 5164 $children = get_children( $args ); 5165 5166 /** 5167 * Filters the list of media attached to the given post. 5168 * 5169 * @since 3.6.0 5170 * 5171 * @param WP_Post[] $children Array of media attached to the given post. 5172 * @param string $type Mime type of the media desired. 5173 * @param WP_Post $post Post object. 5174 */ 5175 return (array) apply_filters( 'get_attached_media', $children, $type, $post ); 5176 } 5177 5178 /** 5179 * Checks the HTML content for an audio, video, object, embed, or iframe tags. 5180 * 5181 * @since 3.6.0 5182 * 5183 * @param string $content A string of HTML which might contain media elements. 5184 * @param string[] $types An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'. 5185 * @return string[] Array of found HTML media elements. 5186 */ 5187 function get_media_embedded_in_content( $content, $types = null ) { 5188 $html = array(); 5189 5190 /** 5191 * Filters the embedded media types that are allowed to be returned from the content blob. 5192 * 5193 * @since 4.2.0 5194 * 5195 * @param string[] $allowed_media_types An array of allowed media types. Default media types are 5196 * 'audio', 'video', 'object', 'embed', and 'iframe'. 5197 */ 5198 $allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) ); 5199 5200 if ( ! empty( $types ) ) { 5201 if ( ! is_array( $types ) ) { 5202 $types = array( $types ); 5203 } 5204 5205 $allowed_media_types = array_intersect( $allowed_media_types, $types ); 5206 } 5207 5208 $tags = implode( '|', $allowed_media_types ); 5209 5210 if ( preg_match_all( '#<(?P<tag>' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches ) ) { 5211 foreach ( $matches[0] as $match ) { 5212 $html[] = $match; 5213 } 5214 } 5215 5216 return $html; 5217 } 5218 5219 /** 5220 * Retrieves galleries from the passed post's content. 5221 * 5222 * @since 3.6.0 5223 * 5224 * @param int|WP_Post $post Post ID or object. 5225 * @param bool $html Optional. Whether to return HTML or data in the array. Default true. 5226 * @return array A list of arrays, each containing gallery data and srcs parsed 5227 * from the expanded shortcode. 5228 */ 5229 function get_post_galleries( $post, $html = true ) { 5230 $post = get_post( $post ); 5231 5232 if ( ! $post ) { 5233 return array(); 5234 } 5235 5236 if ( ! has_shortcode( $post->post_content, 'gallery' ) && ! has_block( 'gallery', $post->post_content ) ) { 5237 return array(); 5238 } 5239 5240 $galleries = array(); 5241 if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) { 5242 foreach ( $matches as $shortcode ) { 5243 if ( 'gallery' === $shortcode[2] ) { 5244 $srcs = array(); 5245 5246 $shortcode_attrs = shortcode_parse_atts( $shortcode[3] ); 5247 5248 // Specify the post ID of the gallery we're viewing if the shortcode doesn't reference another post already. 5249 if ( ! isset( $shortcode_attrs['id'] ) ) { 5250 $shortcode[3] .= ' id="' . (int) $post->ID . '"'; 5251 } 5252 5253 $gallery = do_shortcode_tag( $shortcode ); 5254 if ( $html ) { 5255 $galleries[] = $gallery; 5256 } else { 5257 preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER ); 5258 if ( ! empty( $src ) ) { 5259 foreach ( $src as $s ) { 5260 $srcs[] = $s[2]; 5261 } 5262 } 5263 5264 $galleries[] = array_merge( 5265 $shortcode_attrs, 5266 array( 5267 'src' => array_values( array_unique( $srcs ) ), 5268 ) 5269 ); 5270 } 5271 } 5272 } 5273 } 5274 5275 if ( has_block( 'gallery', $post->post_content ) ) { 5276 $post_blocks = parse_blocks( $post->post_content ); 5277 5278 while ( $block = array_shift( $post_blocks ) ) { 5279 $has_inner_blocks = ! empty( $block['innerBlocks'] ); 5280 5281 // Skip blocks with no blockName and no innerHTML. 5282 if ( ! $block['blockName'] ) { 5283 continue; 5284 } 5285 5286 // Skip non-Gallery blocks. 5287 if ( 'core/gallery' !== $block['blockName'] ) { 5288 // Move inner blocks into the root array before skipping. 5289 if ( $has_inner_blocks ) { 5290 array_push( $post_blocks, ...$block['innerBlocks'] ); 5291 } 5292 continue; 5293 } 5294 5295 // New Gallery block format as HTML. 5296 if ( $has_inner_blocks && $html ) { 5297 $block_html = wp_list_pluck( $block['innerBlocks'], 'innerHTML' ); 5298 $galleries[] = '<figure>' . implode( ' ', $block_html ) . '</figure>'; 5299 continue; 5300 } 5301 5302 $srcs = array(); 5303 5304 // New Gallery block format as an array. 5305 if ( $has_inner_blocks ) { 5306 $attrs = wp_list_pluck( $block['innerBlocks'], 'attrs' ); 5307 $ids = wp_list_pluck( $attrs, 'id' ); 5308 5309 foreach ( $ids as $id ) { 5310 $url = wp_get_attachment_url( $id ); 5311 5312 if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) { 5313 $srcs[] = $url; 5314 } 5315 } 5316 5317 $galleries[] = array( 5318 'ids' => implode( ',', $ids ), 5319 'src' => $srcs, 5320 ); 5321 5322 continue; 5323 } 5324 5325 // Old Gallery block format as HTML. 5326 if ( $html ) { 5327 $galleries[] = $block['innerHTML']; 5328 continue; 5329 } 5330 5331 // Old Gallery block format as an array. 5332 $ids = ! empty( $block['attrs']['ids'] ) ? $block['attrs']['ids'] : array(); 5333 5334 // If present, use the image IDs from the JSON blob as canonical. 5335 if ( ! empty( $ids ) ) { 5336 foreach ( $ids as $id ) { 5337 $url = wp_get_attachment_url( $id ); 5338 5339 if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) { 5340 $srcs[] = $url; 5341 } 5342 } 5343 5344 $galleries[] = array( 5345 'ids' => implode( ',', $ids ), 5346 'src' => $srcs, 5347 ); 5348 5349 continue; 5350 } 5351 5352 // Otherwise, extract srcs from the innerHTML. 5353 preg_match_all( '#src=([\'"])(.+?)\1#is', $block['innerHTML'], $found_srcs, PREG_SET_ORDER ); 5354 5355 if ( ! empty( $found_srcs[0] ) ) { 5356 foreach ( $found_srcs as $src ) { 5357 if ( isset( $src[2] ) && ! in_array( $src[2], $srcs, true ) ) { 5358 $srcs[] = $src[2]; 5359 } 5360 } 5361 } 5362 5363 $galleries[] = array( 'src' => $srcs ); 5364 } 5365 } 5366 5367 /** 5368 * Filters the list of all found galleries in the given post. 5369 * 5370 * @since 3.6.0 5371 * 5372 * @param array $galleries Associative array of all found post galleries. 5373 * @param WP_Post $post Post object. 5374 */ 5375 return apply_filters( 'get_post_galleries', $galleries, $post ); 5376 } 5377 5378 /** 5379 * Checks a specified post's content for gallery and, if present, return the first 5380 * 5381 * @since 3.6.0 5382 * 5383 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. 5384 * @param bool $html Optional. Whether to return HTML or data. Default is true. 5385 * @return string|array Gallery data and srcs parsed from the expanded shortcode. 5386 */ 5387 function get_post_gallery( $post = 0, $html = true ) { 5388 $galleries = get_post_galleries( $post, $html ); 5389 $gallery = reset( $galleries ); 5390 5391 /** 5392 * Filters the first-found post gallery. 5393 * 5394 * @since 3.6.0 5395 * 5396 * @param array $gallery The first-found post gallery. 5397 * @param int|WP_Post $post Post ID or object. 5398 * @param array $galleries Associative array of all found post galleries. 5399 */ 5400 return apply_filters( 'get_post_gallery', $gallery, $post, $galleries ); 5401 } 5402 5403 /** 5404 * Retrieves the image srcs from galleries from a post's content, if present. 5405 * 5406 * @since 3.6.0 5407 * 5408 * @see get_post_galleries() 5409 * 5410 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. 5411 * @return array A list of lists, each containing image srcs parsed. 5412 * from an expanded shortcode 5413 */ 5414 function get_post_galleries_images( $post = 0 ) { 5415 $galleries = get_post_galleries( $post, false ); 5416 return wp_list_pluck( $galleries, 'src' ); 5417 } 5418 5419 /** 5420 * Checks a post's content for galleries and return the image srcs for the first found gallery. 5421 * 5422 * @since 3.6.0 5423 * 5424 * @see get_post_gallery() 5425 * 5426 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. 5427 * @return string[] A list of a gallery's image srcs in order. 5428 */ 5429 function get_post_gallery_images( $post = 0 ) { 5430 $gallery = get_post_gallery( $post, false ); 5431 return empty( $gallery['src'] ) ? array() : $gallery['src']; 5432 } 5433 5434 /** 5435 * Maybe attempts to generate attachment metadata, if missing. 5436 * 5437 * @since 3.9.0 5438 * 5439 * @param WP_Post $attachment Attachment object. 5440 */ 5441 function wp_maybe_generate_attachment_metadata( $attachment ) { 5442 if ( empty( $attachment ) || empty( $attachment->ID ) ) { 5443 return; 5444 } 5445 5446 $attachment_id = (int) $attachment->ID; 5447 $file = get_attached_file( $attachment_id ); 5448 $meta = wp_get_attachment_metadata( $attachment_id ); 5449 5450 if ( empty( $meta ) && file_exists( $file ) ) { 5451 $_meta = get_post_meta( $attachment_id ); 5452 $_lock = 'wp_generating_att_' . $attachment_id; 5453 5454 if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $_lock ) ) { 5455 set_transient( $_lock, $file ); 5456 wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) ); 5457 delete_transient( $_lock ); 5458 } 5459 } 5460 } 5461 5462 /** 5463 * Tries to convert an attachment URL into a post ID. 5464 * 5465 * @since 4.0.0 5466 * 5467 * @global wpdb $wpdb WordPress database abstraction object. 5468 * 5469 * @param string $url The URL to resolve. 5470 * @return int The found post ID, or 0 on failure. 5471 */ 5472 function attachment_url_to_postid( $url ) { 5473 global $wpdb; 5474 5475 /** 5476 * Filters the attachment ID to allow short-circuit the function. 5477 * 5478 * Allows plugins to short-circuit attachment ID lookups. Plugins making 5479 * use of this function should return: 5480 * 5481 * - 0 (integer) to indicate the attachment is not found, 5482 * - attachment ID (integer) to indicate the attachment ID found, 5483 * - null to indicate WordPress should proceed with the lookup. 5484 * 5485 * Warning: The post ID may be null or zero, both of which cast to a 5486 * boolean false. For information about casting to booleans see the 5487 * {@link https://www.php.net/manual/en/language.types.boolean.php PHP documentation}. 5488 * Use the === operator for testing the post ID when developing filters using 5489 * this hook. 5490 * 5491 * @since 6.7.0 5492 * 5493 * @param int|null $post_id The result of the post ID lookup. Null to indicate 5494 * no lookup has been attempted. Default null. 5495 * @param string $url The URL being looked up. 5496 */ 5497 $post_id = apply_filters( 'pre_attachment_url_to_postid', null, $url ); 5498 if ( null !== $post_id ) { 5499 return (int) $post_id; 5500 } 5501 5502 $dir = wp_get_upload_dir(); 5503 $path = $url; 5504 5505 $site_url = parse_url( $dir['url'] ); 5506 $image_path = parse_url( $path ); 5507 5508 // Force the protocols to match if needed. 5509 if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) { 5510 $path = str_replace( $image_path['scheme'], $site_url['scheme'], $path ); 5511 } 5512 5513 if ( str_starts_with( $path, $dir['baseurl'] . '/' ) ) { 5514 $path = substr( $path, strlen( $dir['baseurl'] . '/' ) ); 5515 } 5516 5517 $sql = $wpdb->prepare( 5518 "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s", 5519 $path 5520 ); 5521 5522 $results = $wpdb->get_results( $sql ); 5523 $post_id = null; 5524 5525 if ( $results ) { 5526 // Use the first available result, but prefer a case-sensitive match, if exists. 5527 $post_id = reset( $results )->post_id; 5528 5529 if ( count( $results ) > 1 ) { 5530 foreach ( $results as $result ) { 5531 if ( $path === $result->meta_value ) { 5532 $post_id = $result->post_id; 5533 break; 5534 } 5535 } 5536 } 5537 } 5538 5539 /** 5540 * Filters an attachment ID found by URL. 5541 * 5542 * @since 4.2.0 5543 * 5544 * @param int|null $post_id The post_id (if any) found by the function. 5545 * @param string $url The URL being looked up. 5546 */ 5547 return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url ); 5548 } 5549 5550 /** 5551 * Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view. 5552 * 5553 * @since 4.0.0 5554 * 5555 * @return string[] The relevant CSS file URLs. 5556 */ 5557 function wpview_media_sandbox_styles() { 5558 $version = 'ver=' . get_bloginfo( 'version' ); 5559 $mediaelement = includes_url( "js/mediaelement/mediaelementplayer-legacy.min.css?$version" ); 5560 $wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" ); 5561 5562 return array( $mediaelement, $wpmediaelement ); 5563 } 5564 5565 /** 5566 * Registers the personal data exporter for media. 5567 * 5568 * @since 4.9.6 5569 * 5570 * @param array[] $exporters An array of personal data exporters, keyed by their ID. 5571 * @return array[] Updated array of personal data exporters. 5572 */ 5573 function wp_register_media_personal_data_exporter( $exporters ) { 5574 $exporters['wordpress-media'] = array( 5575 'exporter_friendly_name' => __( 'WordPress Media' ), 5576 'callback' => 'wp_media_personal_data_exporter', 5577 ); 5578 5579 return $exporters; 5580 } 5581 5582 /** 5583 * Finds and exports attachments associated with an email address. 5584 * 5585 * @since 4.9.6 5586 * 5587 * @param string $email_address The attachment owner email address. 5588 * @param int $page Attachment page number. 5589 * @return array { 5590 * An array of personal data. 5591 * 5592 * @type array[] $data An array of personal data arrays. 5593 * @type bool $done Whether the exporter is finished. 5594 * } 5595 */ 5596 function wp_media_personal_data_exporter( $email_address, $page = 1 ) { 5597 // Limit us to 50 attachments at a time to avoid timing out. 5598 $number = 50; 5599 $page = (int) $page; 5600 5601 $data_to_export = array(); 5602 5603 $user = get_user_by( 'email', $email_address ); 5604 if ( false === $user ) { 5605 return array( 5606 'data' => $data_to_export, 5607 'done' => true, 5608 ); 5609 } 5610 5611 $post_query = new WP_Query( 5612 array( 5613 'author' => $user->ID, 5614 'posts_per_page' => $number, 5615 'paged' => $page, 5616 'post_type' => 'attachment', 5617 'post_status' => 'any', 5618 'orderby' => 'ID', 5619 'order' => 'ASC', 5620 ) 5621 ); 5622 5623 foreach ( (array) $post_query->posts as $post ) { 5624 $attachment_url = wp_get_attachment_url( $post->ID ); 5625 5626 if ( $attachment_url ) { 5627 $post_data_to_export = array( 5628 array( 5629 'name' => __( 'URL' ), 5630 'value' => $attachment_url, 5631 ), 5632 ); 5633 5634 $data_to_export[] = array( 5635 'group_id' => 'media', 5636 'group_label' => __( 'Media' ), 5637 'group_description' => __( 'User’s media data.' ), 5638 'item_id' => "post-{$post->ID}", 5639 'data' => $post_data_to_export, 5640 ); 5641 } 5642 } 5643 5644 $done = $post_query->max_num_pages <= $page; 5645 5646 return array( 5647 'data' => $data_to_export, 5648 'done' => $done, 5649 ); 5650 } 5651 5652 /** 5653 * Adds additional default image sub-sizes. 5654 * 5655 * These sizes are meant to enhance the way WordPress displays images on the front-end on larger, 5656 * high-density devices. They make it possible to generate more suitable `srcset` and `sizes` attributes 5657 * when the users upload large images. 5658 * 5659 * The sizes can be changed or removed by themes and plugins but that is not recommended. 5660 * The size "names" reflect the image dimensions, so changing the sizes would be quite misleading. 5661 * 5662 * @since 5.3.0 5663 * @access private 5664 */ 5665 function _wp_add_additional_image_sizes() { 5666 // 2x medium_large size. 5667 add_image_size( '1536x1536', 1536, 1536 ); 5668 // 2x large size. 5669 add_image_size( '2048x2048', 2048, 2048 ); 5670 } 5671 5672 /** 5673 * Callback to enable showing of the user error when uploading .heic images. 5674 * 5675 * @since 5.5.0 5676 * @since 6.7.0 The default behavior is to enable heic uploads as long as the server 5677 * supports the format. The uploads are converted to JPEG's by default. 5678 * 5679 * @param array[] $plupload_settings The settings for Plupload.js. 5680 * @return array[] Modified settings for Plupload.js. 5681 */ 5682 function wp_show_heic_upload_error( $plupload_settings ) { 5683 // Check if HEIC images can be edited. 5684 if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) { 5685 $plupload_init['heic_upload_error'] = true; 5686 } 5687 return $plupload_settings; 5688 } 5689 5690 /** 5691 * Allows PHP's getimagesize() to be debuggable when necessary. 5692 * 5693 * @since 5.7.0 5694 * @since 5.8.0 Added support for WebP images. 5695 * @since 6.5.0 Added support for AVIF images. 5696 * 5697 * @param string $filename The file path. 5698 * @param array $image_info Optional. Extended image information (passed by reference). 5699 * @return array|false Array of image information or false on failure. 5700 */ 5701 function wp_getimagesize( $filename, ?array &$image_info = null ) { 5702 // Don't silence errors when in debug mode, unless running unit tests. 5703 if ( defined( 'WP_DEBUG' ) && WP_DEBUG && ! defined( 'WP_RUN_CORE_TESTS' ) ) { 5704 if ( 2 === func_num_args() ) { 5705 $info = getimagesize( $filename, $image_info ); 5706 } else { 5707 $info = getimagesize( $filename ); 5708 } 5709 } else { 5710 /* 5711 * Silencing notice and warning is intentional. 5712 * 5713 * getimagesize() has a tendency to generate errors, such as 5714 * "corrupt JPEG data: 7191 extraneous bytes before marker", 5715 * even when it's able to provide image size information. 5716 * 5717 * See https://core.trac.wordpress.org/ticket/42480 5718 */ 5719 if ( 2 === func_num_args() ) { 5720 $info = @getimagesize( $filename, $image_info ); 5721 } else { 5722 $info = @getimagesize( $filename ); 5723 } 5724 } 5725 5726 if ( 5727 ! empty( $info ) && 5728 // Some PHP versions return 0x0 sizes from `getimagesize` for unrecognized image formats, including AVIFs. 5729 ! ( empty( $info[0] ) && empty( $info[1] ) ) 5730 ) { 5731 return $info; 5732 } 5733 5734 $image_mime_type = wp_get_image_mime( $filename ); 5735 5736 // Not an image? 5737 if ( false === $image_mime_type ) { 5738 return false; 5739 } 5740 5741 /* 5742 * For PHP versions that don't support WebP images, 5743 * extract the image size info from the file headers. 5744 */ 5745 if ( 'image/webp' === $image_mime_type ) { 5746 $webp_info = wp_get_webp_info( $filename ); 5747 $width = $webp_info['width']; 5748 $height = $webp_info['height']; 5749 5750 // Mimic the native return format. 5751 if ( $width && $height ) { 5752 return array( 5753 $width, 5754 $height, 5755 IMAGETYPE_WEBP, 5756 sprintf( 5757 'width="%d" height="%d"', 5758 $width, 5759 $height 5760 ), 5761 'mime' => 'image/webp', 5762 ); 5763 } 5764 } 5765 5766 // For PHP versions that don't support AVIF images, extract the image size info from the file headers. 5767 if ( 'image/avif' === $image_mime_type ) { 5768 $avif_info = wp_get_avif_info( $filename ); 5769 5770 $width = $avif_info['width']; 5771 $height = $avif_info['height']; 5772 5773 // Mimic the native return format. 5774 if ( $width && $height ) { 5775 return array( 5776 $width, 5777 $height, 5778 IMAGETYPE_AVIF, 5779 sprintf( 5780 'width="%d" height="%d"', 5781 $width, 5782 $height 5783 ), 5784 'mime' => 'image/avif', 5785 ); 5786 } 5787 } 5788 5789 // For PHP versions that don't support HEIC images, extract the size info using Imagick when available. 5790 if ( wp_is_heic_image_mime_type( $image_mime_type ) ) { 5791 $editor = wp_get_image_editor( $filename ); 5792 5793 if ( is_wp_error( $editor ) ) { 5794 return false; 5795 } 5796 5797 // If the editor for HEICs is Imagick, use it to get the image size. 5798 if ( $editor instanceof WP_Image_Editor_Imagick ) { 5799 $size = $editor->get_size(); 5800 return array( 5801 $size['width'], 5802 $size['height'], 5803 IMAGETYPE_HEIC, 5804 sprintf( 5805 'width="%d" height="%d"', 5806 $size['width'], 5807 $size['height'] 5808 ), 5809 'mime' => 'image/heic', 5810 ); 5811 } 5812 } 5813 5814 // The image could not be parsed. 5815 return false; 5816 } 5817 5818 /** 5819 * Extracts meta information about an AVIF file: width, height, bit depth, and number of channels. 5820 * 5821 * @since 6.5.0 5822 * 5823 * @param string $filename Path to an AVIF file. 5824 * @return array { 5825 * An array of AVIF image information. 5826 * 5827 * @type int|false $width Image width on success, false on failure. 5828 * @type int|false $height Image height on success, false on failure. 5829 * @type int|false $bit_depth Image bit depth on success, false on failure. 5830 * @type int|false $num_channels Image number of channels on success, false on failure. 5831 * } 5832 */ 5833 function wp_get_avif_info( $filename ) { 5834 $results = array( 5835 'width' => false, 5836 'height' => false, 5837 'bit_depth' => false, 5838 'num_channels' => false, 5839 ); 5840 5841 if ( 'image/avif' !== wp_get_image_mime( $filename ) ) { 5842 return $results; 5843 } 5844 5845 // Parse the file using libavifinfo's PHP implementation. 5846 require_once ABSPATH . WPINC . '/class-avif-info.php'; 5847 5848 $handle = fopen( $filename, 'rb' ); 5849 if ( $handle ) { 5850 $parser = new Avifinfo\Parser( $handle ); 5851 $success = $parser->parse_ftyp() && $parser->parse_file(); 5852 fclose( $handle ); 5853 if ( $success ) { 5854 $results = $parser->features->primary_item_features; 5855 } 5856 } 5857 return $results; 5858 } 5859 5860 /** 5861 * Extracts meta information about a WebP file: width, height, and type. 5862 * 5863 * @since 5.8.0 5864 * 5865 * @param string $filename Path to a WebP file. 5866 * @return array { 5867 * An array of WebP image information. 5868 * 5869 * @type int|false $width Image width on success, false on failure. 5870 * @type int|false $height Image height on success, false on failure. 5871 * @type string|false $type The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'. 5872 * False on failure. 5873 * } 5874 */ 5875 function wp_get_webp_info( $filename ) { 5876 $width = false; 5877 $height = false; 5878 $type = false; 5879 5880 if ( 'image/webp' !== wp_get_image_mime( $filename ) ) { 5881 return compact( 'width', 'height', 'type' ); 5882 } 5883 5884 $magic = file_get_contents( $filename, false, null, 0, 40 ); 5885 5886 if ( false === $magic ) { 5887 return compact( 'width', 'height', 'type' ); 5888 } 5889 5890 // Make sure we got enough bytes. 5891 if ( strlen( $magic ) < 40 ) { 5892 return compact( 'width', 'height', 'type' ); 5893 } 5894 5895 /* 5896 * The headers are a little different for each of the three formats. 5897 * Header values based on WebP docs, see https://developers.google.com/speed/webp/docs/riff_container. 5898 */ 5899 switch ( substr( $magic, 12, 4 ) ) { 5900 // Lossy WebP. 5901 case 'VP8 ': 5902 $parts = unpack( 'v2', substr( $magic, 26, 4 ) ); 5903 $width = (int) ( $parts[1] & 0x3FFF ); 5904 $height = (int) ( $parts[2] & 0x3FFF ); 5905 $type = 'lossy'; 5906 break; 5907 // Lossless WebP. 5908 case 'VP8L': 5909 $parts = unpack( 'C4', substr( $magic, 21, 4 ) ); 5910 $width = (int) ( $parts[1] | ( ( $parts[2] & 0x3F ) << 8 ) ) + 1; 5911 $height = (int) ( ( ( $parts[2] & 0xC0 ) >> 6 ) | ( $parts[3] << 2 ) | ( ( $parts[4] & 0x03 ) << 10 ) ) + 1; 5912 $type = 'lossless'; 5913 break; 5914 // Animated/alpha WebP. 5915 case 'VP8X': 5916 // Pad 24-bit int. 5917 $width = unpack( 'V', substr( $magic, 24, 3 ) . "\x00" ); 5918 $width = (int) ( $width[1] & 0xFFFFFF ) + 1; 5919 // Pad 24-bit int. 5920 $height = unpack( 'V', substr( $magic, 27, 3 ) . "\x00" ); 5921 $height = (int) ( $height[1] & 0xFFFFFF ) + 1; 5922 $type = 'animated-alpha'; 5923 break; 5924 } 5925 5926 return compact( 'width', 'height', 'type' ); 5927 } 5928 5929 /** 5930 * Gets loading optimization attributes. 5931 * 5932 * This function returns an array of attributes that should be merged into the given attributes array to optimize 5933 * loading performance. Potential attributes returned by this function are: 5934 * - `loading` attribute with a value of "lazy" 5935 * - `fetchpriority` attribute with a value of "high" 5936 * - `decoding` attribute with a value of "async" 5937 * 5938 * If any of these attributes are already present in the given attributes, they will not be modified. Note that no 5939 * element should have both `loading="lazy"` and `fetchpriority="high"`, so the function will trigger a warning in case 5940 * both attributes are present with those values. 5941 * 5942 * @since 6.3.0 5943 * 5944 * @global WP_Query $wp_query WordPress Query object. 5945 * 5946 * @param string $tag_name The tag name. 5947 * @param array $attr Array of the attributes for the tag. 5948 * @param string $context Context for the element for which the loading optimization attribute is requested. 5949 * @return array Loading optimization attributes. 5950 */ 5951 function wp_get_loading_optimization_attributes( $tag_name, $attr, $context ) { 5952 global $wp_query; 5953 5954 /** 5955 * Filters whether to short-circuit loading optimization attributes. 5956 * 5957 * Returning an array from the filter will effectively short-circuit the loading of optimization attributes, 5958 * returning that value instead. 5959 * 5960 * @since 6.4.0 5961 * 5962 * @param array|false $loading_attrs False by default, or array of loading optimization attributes to short-circuit. 5963 * @param string $tag_name The tag name. 5964 * @param array $attr Array of the attributes for the tag. 5965 * @param string $context Context for the element for which the loading optimization attribute is requested. 5966 */ 5967 $loading_attrs = apply_filters( 'pre_wp_get_loading_optimization_attributes', false, $tag_name, $attr, $context ); 5968 5969 if ( is_array( $loading_attrs ) ) { 5970 return $loading_attrs; 5971 } 5972 5973 $loading_attrs = array(); 5974 5975 /* 5976 * Skip lazy-loading for the overall block template, as it is handled more granularly. 5977 * The skip is also applicable for `fetchpriority`. 5978 */ 5979 if ( 'template' === $context ) { 5980 /** This filter is documented in wp-includes/media.php */ 5981 return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); 5982 } 5983 5984 // For now this function only supports images and iframes. 5985 if ( 'img' !== $tag_name && 'iframe' !== $tag_name ) { 5986 /** This filter is documented in wp-includes/media.php */ 5987 return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); 5988 } 5989 5990 /* 5991 * Skip programmatically created images within content blobs as they need to be handled together with the other 5992 * images within the post content or widget content. 5993 * Without this clause, they would already be considered within their own context which skews the image count and 5994 * can result in the first post content image being lazy-loaded or an image further down the page being marked as a 5995 * high priority. 5996 */ 5997 if ( 5998 'the_content' !== $context && doing_filter( 'the_content' ) || 5999 'widget_text_content' !== $context && doing_filter( 'widget_text_content' ) || 6000 'widget_block_content' !== $context && doing_filter( 'widget_block_content' ) 6001 ) { 6002 /** This filter is documented in wp-includes/media.php */ 6003 return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); 6004 6005 } 6006 6007 /* 6008 * Add `decoding` with a value of "async" for every image unless it has a 6009 * conflicting `decoding` attribute already present. 6010 */ 6011 if ( 'img' === $tag_name ) { 6012 if ( isset( $attr['decoding'] ) ) { 6013 $loading_attrs['decoding'] = $attr['decoding']; 6014 } else { 6015 $loading_attrs['decoding'] = 'async'; 6016 } 6017 } 6018 6019 // For any resources, width and height must be provided, to avoid layout shifts. 6020 if ( ! isset( $attr['width'], $attr['height'] ) ) { 6021 /** This filter is documented in wp-includes/media.php */ 6022 return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); 6023 } 6024 6025 /* 6026 * The key function logic starts here. 6027 */ 6028 $maybe_in_viewport = null; 6029 $increase_count = false; 6030 $maybe_increase_count = false; 6031 6032 // Logic to handle a `loading` attribute that is already provided. 6033 if ( isset( $attr['loading'] ) ) { 6034 /* 6035 * Interpret "lazy" as not in viewport. Any other value can be 6036 * interpreted as in viewport (realistically only "eager" or `false` 6037 * to force-omit the attribute are other potential values). 6038 */ 6039 if ( 'lazy' === $attr['loading'] ) { 6040 $maybe_in_viewport = false; 6041 } else { 6042 $maybe_in_viewport = true; 6043 } 6044 } 6045 6046 // Logic to handle a `fetchpriority` attribute that is already provided. 6047 if ( isset( $attr['fetchpriority'] ) && 'high' === $attr['fetchpriority'] ) { 6048 /* 6049 * If the image was already determined to not be in the viewport (e.g. 6050 * from an already provided `loading` attribute), trigger a warning. 6051 * Otherwise, the value can be interpreted as in viewport, since only 6052 * the most important in-viewport image should have `fetchpriority` set 6053 * to "high". 6054 */ 6055 if ( false === $maybe_in_viewport ) { 6056 _doing_it_wrong( 6057 __FUNCTION__, 6058 __( 'An image should not be lazy-loaded and marked as high priority at the same time.' ), 6059 '6.3.0' 6060 ); 6061 /* 6062 * Set `fetchpriority` here for backward-compatibility as we should 6063 * not override what a developer decided, even though it seems 6064 * incorrect. 6065 */ 6066 $loading_attrs['fetchpriority'] = 'high'; 6067 } else { 6068 $maybe_in_viewport = true; 6069 } 6070 } 6071 6072 if ( null === $maybe_in_viewport ) { 6073 $header_enforced_contexts = array( 6074 'template_part_' . WP_TEMPLATE_PART_AREA_HEADER => true, 6075 'get_header_image_tag' => true, 6076 ); 6077 6078 /** 6079 * Filters the header-specific contexts. 6080 * 6081 * @since 6.4.0 6082 * 6083 * @param array $default_header_enforced_contexts Map of contexts for which elements should be considered 6084 * in the header of the page, as $context => $enabled 6085 * pairs. The $enabled should always be true. 6086 */ 6087 $header_enforced_contexts = apply_filters( 'wp_loading_optimization_force_header_contexts', $header_enforced_contexts ); 6088 6089 // Consider elements with these header-specific contexts to be in viewport. 6090 if ( isset( $header_enforced_contexts[ $context ] ) ) { 6091 $maybe_in_viewport = true; 6092 $maybe_increase_count = true; 6093 } elseif ( ! is_admin() && in_the_loop() && is_main_query() ) { 6094 /* 6095 * Get the content media count, since this is a main query 6096 * content element. This is accomplished by "increasing" 6097 * the count by zero, as the only way to get the count is 6098 * to call this function. 6099 * The actual count increase happens further below, based 6100 * on the `$increase_count` flag set here. 6101 */ 6102 $content_media_count = wp_increase_content_media_count( 0 ); 6103 $increase_count = true; 6104 6105 // If the count so far is below the threshold, `loading` attribute is omitted. 6106 if ( $content_media_count < wp_omit_loading_attr_threshold() ) { 6107 $maybe_in_viewport = true; 6108 } else { 6109 $maybe_in_viewport = false; 6110 } 6111 } elseif ( 6112 // Only apply for main query but before the loop. 6113 $wp_query->before_loop && $wp_query->is_main_query() 6114 /* 6115 * Any image before the loop, but after the header has started should not be lazy-loaded, 6116 * except when the footer has already started which can happen when the current template 6117 * does not include any loop. 6118 */ 6119 && did_action( 'get_header' ) && ! did_action( 'get_footer' ) 6120 ) { 6121 $maybe_in_viewport = true; 6122 $maybe_increase_count = true; 6123 } 6124 } 6125 6126 /* 6127 * If the element is in the viewport (`true`), potentially add 6128 * `fetchpriority` with a value of "high". Otherwise, i.e. if the element 6129 * is not not in the viewport (`false`) or it is unknown (`null`), add 6130 * `loading` with a value of "lazy". 6131 */ 6132 if ( $maybe_in_viewport ) { 6133 $loading_attrs = wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr ); 6134 } else { 6135 // Only add `loading="lazy"` if the feature is enabled. 6136 if ( wp_lazy_loading_enabled( $tag_name, $context ) ) { 6137 $loading_attrs['loading'] = 'lazy'; 6138 } 6139 } 6140 6141 /* 6142 * If flag was set based on contextual logic above, increase the content 6143 * media count, either unconditionally, or based on whether the image size 6144 * is larger than the threshold. 6145 */ 6146 if ( $increase_count ) { 6147 wp_increase_content_media_count(); 6148 } elseif ( $maybe_increase_count ) { 6149 /** This filter is documented in wp-includes/media.php */ 6150 $wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 ); 6151 6152 if ( $wp_min_priority_img_pixels <= $attr['width'] * $attr['height'] ) { 6153 wp_increase_content_media_count(); 6154 } 6155 } 6156 6157 /** 6158 * Filters the loading optimization attributes. 6159 * 6160 * @since 6.4.0 6161 * 6162 * @param array $loading_attrs The loading optimization attributes. 6163 * @param string $tag_name The tag name. 6164 * @param array $attr Array of the attributes for the tag. 6165 * @param string $context Context for the element for which the loading optimization attribute is requested. 6166 */ 6167 return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); 6168 } 6169 6170 /** 6171 * Gets the threshold for how many of the first content media elements to not lazy-load. 6172 * 6173 * This function runs the {@see 'wp_omit_loading_attr_threshold'} filter, which uses a default threshold value of 3. 6174 * The filter is only run once per page load, unless the `$force` parameter is used. 6175 * 6176 * @since 5.9.0 6177 * 6178 * @param bool $force Optional. If set to true, the filter will be (re-)applied even if it already has been before. 6179 * Default false. 6180 * @return int The number of content media elements to not lazy-load. 6181 */ 6182 function wp_omit_loading_attr_threshold( $force = false ) { 6183 static $omit_threshold; 6184 6185 // This function may be called multiple times. Run the filter only once per page load. 6186 if ( ! isset( $omit_threshold ) || $force ) { 6187 /** 6188 * Filters the threshold for how many of the first content media elements to not lazy-load. 6189 * 6190 * For these first content media elements, the `loading` attribute will be omitted. By default, this is the case 6191 * for only the very first content media element. 6192 * 6193 * @since 5.9.0 6194 * @since 6.3.0 The default threshold was changed from 1 to 3. 6195 * 6196 * @param int $omit_threshold The number of media elements where the `loading` attribute will not be added. Default 3. 6197 */ 6198 $omit_threshold = apply_filters( 'wp_omit_loading_attr_threshold', 3 ); 6199 } 6200 6201 return $omit_threshold; 6202 } 6203 6204 /** 6205 * Increases an internal content media count variable. 6206 * 6207 * @since 5.9.0 6208 * @access private 6209 * 6210 * @param int $amount Optional. Amount to increase by. Default 1. 6211 * @return int The latest content media count, after the increase. 6212 */ 6213 function wp_increase_content_media_count( $amount = 1 ) { 6214 static $content_media_count = 0; 6215 6216 $content_media_count += $amount; 6217 6218 return $content_media_count; 6219 } 6220 6221 /** 6222 * Determines whether to add `fetchpriority='high'` to loading attributes. 6223 * 6224 * @since 6.3.0 6225 * @access private 6226 * 6227 * @param array $loading_attrs Array of the loading optimization attributes for the element. 6228 * @param string $tag_name The tag name. 6229 * @param array $attr Array of the attributes for the element. 6230 * @return array Updated loading optimization attributes for the element. 6231 */ 6232 function wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr ) { 6233 // For now, adding `fetchpriority="high"` is only supported for images. 6234 if ( 'img' !== $tag_name ) { 6235 return $loading_attrs; 6236 } 6237 6238 if ( isset( $attr['fetchpriority'] ) ) { 6239 /* 6240 * While any `fetchpriority` value could be set in `$loading_attrs`, 6241 * for consistency we only do it for `fetchpriority="high"` since that 6242 * is the only possible value that WordPress core would apply on its 6243 * own. 6244 */ 6245 if ( 'high' === $attr['fetchpriority'] ) { 6246 $loading_attrs['fetchpriority'] = 'high'; 6247 wp_high_priority_element_flag( false ); 6248 } 6249 6250 return $loading_attrs; 6251 } 6252 6253 // Lazy-loading and `fetchpriority="high"` are mutually exclusive. 6254 if ( isset( $loading_attrs['loading'] ) && 'lazy' === $loading_attrs['loading'] ) { 6255 return $loading_attrs; 6256 } 6257 6258 if ( ! wp_high_priority_element_flag() ) { 6259 return $loading_attrs; 6260 } 6261 6262 /** 6263 * Filters the minimum square-pixels threshold for an image to be eligible as the high-priority image. 6264 * 6265 * @since 6.3.0 6266 * 6267 * @param int $threshold Minimum square-pixels threshold. Default 50000. 6268 */ 6269 $wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 ); 6270 6271 if ( $wp_min_priority_img_pixels <= $attr['width'] * $attr['height'] ) { 6272 $loading_attrs['fetchpriority'] = 'high'; 6273 wp_high_priority_element_flag( false ); 6274 } 6275 6276 return $loading_attrs; 6277 } 6278 6279 /** 6280 * Accesses a flag that indicates if an element is a possible candidate for `fetchpriority='high'`. 6281 * 6282 * @since 6.3.0 6283 * @access private 6284 * 6285 * @param bool $value Optional. Used to change the static variable. Default null. 6286 * @return bool Returns true if high-priority element was marked already, otherwise false. 6287 */ 6288 function wp_high_priority_element_flag( $value = null ) { 6289 static $high_priority_element = true; 6290 6291 if ( is_bool( $value ) ) { 6292 $high_priority_element = $value; 6293 } 6294 6295 return $high_priority_element; 6296 } 6297 6298 /** 6299 * Determines the output format for the image editor. 6300 * 6301 * @since 6.7.0 6302 * @access private 6303 * 6304 * @param string $filename Path to the image. 6305 * @param string $mime_type The source image mime type. 6306 * @return string[] An array of mime type mappings. 6307 */ 6308 function wp_get_image_editor_output_format( $filename, $mime_type ) { 6309 $output_format = array( 6310 'image/heic' => 'image/jpeg', 6311 'image/heif' => 'image/jpeg', 6312 'image/heic-sequence' => 'image/jpeg', 6313 'image/heif-sequence' => 'image/jpeg', 6314 ); 6315 6316 /** 6317 * Filters the image editor output format mapping. 6318 * 6319 * Enables filtering the mime type used to save images. By default HEIC/HEIF images 6320 * are converted to JPEGs. 6321 * 6322 * @see WP_Image_Editor::get_output_format() 6323 * 6324 * @since 5.8.0 6325 * @since 6.7.0 The default was changed from an empty array to an array 6326 * containing the HEIC/HEIF images mime types. 6327 * 6328 * @param string[] $output_format { 6329 * An array of mime type mappings. Maps a source mime type to a new 6330 * destination mime type. By default maps HEIC/HEIF input to JPEG output. 6331 * 6332 * @type string ...$0 The new mime type. 6333 * } 6334 * @param string $filename Path to the image. 6335 * @param string $mime_type The source image mime type. 6336 */ 6337 return apply_filters( 'image_editor_output_format', $output_format, $filename, $mime_type ); 6338 }
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