3 * WordPress API for media display.
10 * Scale down the default size of an image.
12 * This is so that the image is a better fit for the editor and theme.
14 * The `$size` parameter accepts either an array or a string. The supported string
15 * values are 'thumb' or 'thumbnail' for the given thumbnail size or defaults at
16 * 128 width and 96 height in pixels. Also supported for the string value is
17 * 'medium', 'medium_large' and 'full'. The 'full' isn't actually supported, but any value other
18 * than the supported will result in the content_width size or 500 if that is
21 * Finally, there is a filter named {@see 'editor_max_image_size'}, that will be
22 * called on the calculated array for width and height, respectively. The second
23 * parameter will be the value that was in the $size parameter. The returned
24 * type for the hook is an array with the width as the first element and the
25 * height as the second element.
29 * @global int $content_width
30 * @global array $_wp_additional_image_sizes
32 * @param int $width Width of the image in pixels.
33 * @param int $height Height of the image in pixels.
34 * @param string|array $size Optional. Image size. Accepts any valid image size, or an array
35 * of width and height values in pixels (in that order).
37 * @param string $context Optional. Could be 'display' (like in a theme) or 'edit'
38 * (like inserting into an editor). Default null.
39 * @return array Width and height of what the result image should resize to.
41 function image_constrain_size_for_editor( $width, $height, $size = 'medium', $context = null ) {
42 global $content_width, $_wp_additional_image_sizes;
45 $context = is_admin() ? 'edit' : 'display';
47 if ( is_array($size) ) {
48 $max_width = $size[0];
49 $max_height = $size[1];
51 elseif ( $size == 'thumb' || $size == 'thumbnail' ) {
52 $max_width = intval(get_option('thumbnail_size_w'));
53 $max_height = intval(get_option('thumbnail_size_h'));
54 // last chance thumbnail size defaults
55 if ( !$max_width && !$max_height ) {
60 elseif ( $size == 'medium' ) {
61 $max_width = intval(get_option('medium_size_w'));
62 $max_height = intval(get_option('medium_size_h'));
65 elseif ( $size == 'medium_large' ) {
66 $max_width = intval( get_option( 'medium_large_size_w' ) );
67 $max_height = intval( get_option( 'medium_large_size_h' ) );
69 if ( intval( $content_width ) > 0 ) {
70 $max_width = min( intval( $content_width ), $max_width );
73 elseif ( $size == 'large' ) {
75 * We're inserting a large size image into the editor. If it's a really
76 * big image we'll scale it down to fit reasonably within the editor
77 * itself, and within the theme's content width if it's known. The user
78 * can resize it in the editor if they wish.
80 $max_width = intval(get_option('large_size_w'));
81 $max_height = intval(get_option('large_size_h'));
82 if ( intval($content_width) > 0 ) {
83 $max_width = min( intval($content_width), $max_width );
85 } elseif ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ) ) ) {
86 $max_width = intval( $_wp_additional_image_sizes[$size]['width'] );
87 $max_height = intval( $_wp_additional_image_sizes[$size]['height'] );
88 if ( intval($content_width) > 0 && 'edit' == $context ) // Only in admin. Assume that theme authors know what they're doing.
89 $max_width = min( intval($content_width), $max_width );
91 // $size == 'full' has no constraint
94 $max_height = $height;
98 * Filter the maximum image size dimensions for the editor.
102 * @param array $max_image_size An array with the width as the first element,
103 * and the height as the second element.
104 * @param string|array $size Size of what the result image should be.
105 * @param string $context The context the image is being resized for.
106 * Possible values are 'display' (like in a theme)
107 * or 'edit' (like inserting into an editor).
109 list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context );
111 return wp_constrain_dimensions( $width, $height, $max_width, $max_height );
115 * Retrieve width and height attributes using given width and height values.
117 * Both attributes are required in the sense that both parameters must have a
118 * value, but are optional in that if you set them to false or null, then they
119 * will not be added to the returned string.
121 * You can set the value using a string, but it will only take numeric values.
122 * If you wish to put 'px' after the numbers, then it will be stripped out of
127 * @param int|string $width Image width in pixels.
128 * @param int|string $height Image height in pixels.
129 * @return string HTML attributes for width and, or height.
131 function image_hwstring( $width, $height ) {
134 $out .= 'width="'.intval($width).'" ';
136 $out .= 'height="'.intval($height).'" ';
141 * Scale an image to fit a particular size (such as 'thumb' or 'medium').
143 * Array with image url, width, height, and whether is intermediate size, in
144 * that order is returned on success is returned. $is_intermediate is true if
145 * $url is a resized image, false if it is the original.
147 * The URL might be the original image, or it might be a resized version. This
148 * function won't create a new resized copy, it will just return an already
149 * resized one if it exists.
151 * A plugin may use the 'image_downsize' filter to hook into and offer image
152 * resizing services for images. The hook must return an array with the same
153 * elements that are returned in the function. The first element being the URL
154 * to the new image that was resized.
158 * @param int $id Attachment ID for image.
159 * @param array|string $size Optional. Image size to scale to. Accepts any valid image size,
160 * or an array of width and height values in pixels (in that order).
162 * @return false|array Array containing the image URL, width, height, and boolean for whether
163 * the image is an intermediate size. False on failure.
165 function image_downsize( $id, $size = 'medium' ) {
167 if ( !wp_attachment_is_image($id) )
171 * Filter whether to preempt the output of image_downsize().
173 * Passing a truthy value to the filter will effectively short-circuit
174 * down-sizing the image, returning that value as output instead.
178 * @param bool $downsize Whether to short-circuit the image downsize. Default false.
179 * @param int $id Attachment ID for image.
180 * @param array|string $size Size of image. Image size or array of width and height values (in that order).
183 if ( $out = apply_filters( 'image_downsize', false, $id, $size ) ) {
187 $img_url = wp_get_attachment_url($id);
188 $meta = wp_get_attachment_metadata($id);
189 $width = $height = 0;
190 $is_intermediate = false;
191 $img_url_basename = wp_basename($img_url);
193 // try for a new style intermediate size
194 if ( $intermediate = image_get_intermediate_size($id, $size) ) {
195 $img_url = str_replace($img_url_basename, $intermediate['file'], $img_url);
196 $width = $intermediate['width'];
197 $height = $intermediate['height'];
198 $is_intermediate = true;
200 elseif ( $size == 'thumbnail' ) {
201 // fall back to the old thumbnail
202 if ( ($thumb_file = wp_get_attachment_thumb_file($id)) && $info = getimagesize($thumb_file) ) {
203 $img_url = str_replace($img_url_basename, wp_basename($thumb_file), $img_url);
206 $is_intermediate = true;
209 if ( !$width && !$height && isset( $meta['width'], $meta['height'] ) ) {
210 // any other type: use the real image
211 $width = $meta['width'];
212 $height = $meta['height'];
216 // we have the actual image size, but might need to further constrain it if content_width is narrower
217 list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size );
219 return array( $img_url, $width, $height, $is_intermediate );
226 * Register a new image size.
228 * Cropping behavior for the image size is dependent on the value of $crop:
229 * 1. If false (default), images will be scaled, not cropped.
230 * 2. If an array in the form of array( x_crop_position, y_crop_position ):
231 * - x_crop_position accepts 'left' 'center', or 'right'.
232 * - y_crop_position accepts 'top', 'center', or 'bottom'.
233 * Images will be cropped to the specified dimensions within the defined crop area.
234 * 3. If true, images will be cropped to the specified dimensions using center positions.
238 * @global array $_wp_additional_image_sizes Associative array of additional image sizes.
240 * @param string $name Image size identifier.
241 * @param int $width Image width in pixels.
242 * @param int $height Image height in pixels.
243 * @param bool|array $crop Optional. Whether to crop images to specified width and height or resize.
244 * An array can specify positioning of the crop area. Default false.
246 function add_image_size( $name, $width = 0, $height = 0, $crop = false ) {
247 global $_wp_additional_image_sizes;
249 $_wp_additional_image_sizes[ $name ] = array(
250 'width' => absint( $width ),
251 'height' => absint( $height ),
257 * Check if an image size exists.
261 * @global array $_wp_additional_image_sizes
263 * @param string $name The image size to check.
264 * @return bool True if the image size exists, false if not.
266 function has_image_size( $name ) {
267 global $_wp_additional_image_sizes;
269 return isset( $_wp_additional_image_sizes[ $name ] );
273 * Remove a new image size.
277 * @global array $_wp_additional_image_sizes
279 * @param string $name The image size to remove.
280 * @return bool True if the image size was successfully removed, false on failure.
282 function remove_image_size( $name ) {
283 global $_wp_additional_image_sizes;
285 if ( isset( $_wp_additional_image_sizes[ $name ] ) ) {
286 unset( $_wp_additional_image_sizes[ $name ] );
294 * Registers an image size for the post thumbnail.
298 * @see add_image_size() for details on cropping behavior.
300 * @param int $width Image width in pixels.
301 * @param int $height Image height in pixels.
302 * @param bool|array $crop Optional. Whether to crop images to specified width and height or resize.
303 * An array can specify positioning of the crop area. Default false.
305 function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) {
306 add_image_size( 'post-thumbnail', $width, $height, $crop );
310 * Gets an img tag for an image attachment, scaling it down if requested.
312 * The filter 'get_image_tag_class' allows for changing the class name for the
313 * image without having to use regular expressions on the HTML content. The
314 * parameters are: what WordPress will use for the class, the Attachment ID,
315 * image align value, and the size the image should be.
317 * The second filter 'get_image_tag' has the HTML content, which can then be
318 * further manipulated by a plugin to change all attribute values and even HTML
323 * @param int $id Attachment ID.
324 * @param string $alt Image Description for the alt attribute.
325 * @param string $title Image Description for the title attribute.
326 * @param string $align Part of the class name for aligning the image.
327 * @param string|array $size Optional. Registered image size to retrieve a tag for. Accepts any
328 * valid image size, or an array of width and height values in pixels
329 * (in that order). Default 'medium'.
330 * @return string HTML IMG element for given image attachment
332 function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) {
334 list( $img_src, $width, $height ) = image_downsize($id, $size);
335 $hwstring = image_hwstring($width, $height);
337 $title = $title ? 'title="' . esc_attr( $title ) . '" ' : '';
339 $class = 'align' . esc_attr($align) .' size-' . esc_attr($size) . ' wp-image-' . $id;
342 * Filter the value of the attachment's image tag class attribute.
346 * @param string $class CSS class name or space-separated list of classes.
347 * @param int $id Attachment ID.
348 * @param string $align Part of the class name for aligning the image.
349 * @param string|array $size Size of image. Image size or array of width and height values (in that order).
352 $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size );
354 $html = '<img src="' . esc_attr($img_src) . '" alt="' . esc_attr($alt) . '" ' . $title . $hwstring . 'class="' . $class . '" />';
357 * Filter the HTML content for the image tag.
361 * @param string $html HTML content for the image.
362 * @param int $id Attachment ID.
363 * @param string $alt Alternate text.
364 * @param string $title Attachment title.
365 * @param string $align Part of the class name for aligning the image.
366 * @param string|array $size Size of image. Image size or array of width and height values (in that order).
369 return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size );
373 * Calculates the new dimensions for a down-sampled image.
375 * If either width or height are empty, no constraint is applied on
380 * @param int $current_width Current width of the image.
381 * @param int $current_height Current height of the image.
382 * @param int $max_width Optional. Max width in pixels to constrain to. Default 0.
383 * @param int $max_height Optional. Max height in pixels to constrain to. Default 0.
384 * @return array First item is the width, the second item is the height.
386 function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) {
387 if ( !$max_width && !$max_height )
388 return array( $current_width, $current_height );
390 $width_ratio = $height_ratio = 1.0;
391 $did_width = $did_height = false;
393 if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) {
394 $width_ratio = $max_width / $current_width;
398 if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) {
399 $height_ratio = $max_height / $current_height;
403 // Calculate the larger/smaller ratios
404 $smaller_ratio = min( $width_ratio, $height_ratio );
405 $larger_ratio = max( $width_ratio, $height_ratio );
407 if ( (int) round( $current_width * $larger_ratio ) > $max_width || (int) round( $current_height * $larger_ratio ) > $max_height ) {
408 // The larger ratio is too big. It would result in an overflow.
409 $ratio = $smaller_ratio;
411 // The larger ratio fits, and is likely to be a more "snug" fit.
412 $ratio = $larger_ratio;
415 // Very small dimensions may result in 0, 1 should be the minimum.
416 $w = max ( 1, (int) round( $current_width * $ratio ) );
417 $h = max ( 1, (int) round( $current_height * $ratio ) );
419 // Sometimes, due to rounding, we'll end up with a result like this: 465x700 in a 177x177 box is 117x176... a pixel short
420 // We also have issues with recursive calls resulting in an ever-changing result. Constraining to the result of a constraint should yield the original result.
421 // Thus we look for dimensions that are one pixel shy of the max value and bump them up
423 // Note: $did_width means it is possible $smaller_ratio == $width_ratio.
424 if ( $did_width && $w == $max_width - 1 ) {
425 $w = $max_width; // Round it up
428 // Note: $did_height means it is possible $smaller_ratio == $height_ratio.
429 if ( $did_height && $h == $max_height - 1 ) {
430 $h = $max_height; // Round it up
434 * Filter dimensions to constrain down-sampled images to.
438 * @param array $dimensions The image width and height.
439 * @param int $current_width The current width of the image.
440 * @param int $current_height The current height of the image.
441 * @param int $max_width The maximum width permitted.
442 * @param int $max_height The maximum height permitted.
444 return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height );
448 * Retrieves calculated resize dimensions for use in WP_Image_Editor.
450 * Calculates dimensions and coordinates for a resized image that fits
451 * within a specified width and height.
453 * Cropping behavior is dependent on the value of $crop:
454 * 1. If false (default), images will not be cropped.
455 * 2. If an array in the form of array( x_crop_position, y_crop_position ):
456 * - x_crop_position accepts 'left' 'center', or 'right'.
457 * - y_crop_position accepts 'top', 'center', or 'bottom'.
458 * Images will be cropped to the specified dimensions within the defined crop area.
459 * 3. If true, images will be cropped to the specified dimensions using center positions.
463 * @param int $orig_w Original width in pixels.
464 * @param int $orig_h Original height in pixels.
465 * @param int $dest_w New width in pixels.
466 * @param int $dest_h New height in pixels.
467 * @param bool|array $crop Optional. Whether to crop image to specified width and height or resize.
468 * An array can specify positioning of the crop area. Default false.
469 * @return false|array False on failure. Returned array matches parameters for `imagecopyresampled()`.
471 function image_resize_dimensions( $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) {
473 if ($orig_w <= 0 || $orig_h <= 0)
475 // at least one of dest_w or dest_h must be specific
476 if ($dest_w <= 0 && $dest_h <= 0)
480 * Filter whether to preempt calculating the image resize dimensions.
482 * Passing a non-null value to the filter will effectively short-circuit
483 * image_resize_dimensions(), returning that value instead.
487 * @param null|mixed $null Whether to preempt output of the resize dimensions.
488 * @param int $orig_w Original width in pixels.
489 * @param int $orig_h Original height in pixels.
490 * @param int $dest_w New width in pixels.
491 * @param int $dest_h New height in pixels.
492 * @param bool|array $crop Whether to crop image to specified width and height or resize.
493 * An array can specify positioning of the crop area. Default false.
495 $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop );
496 if ( null !== $output )
500 // crop the largest possible portion of the original image that we can size to $dest_w x $dest_h
501 $aspect_ratio = $orig_w / $orig_h;
502 $new_w = min($dest_w, $orig_w);
503 $new_h = min($dest_h, $orig_h);
506 $new_w = (int) round( $new_h * $aspect_ratio );
510 $new_h = (int) round( $new_w / $aspect_ratio );
513 $size_ratio = max($new_w / $orig_w, $new_h / $orig_h);
515 $crop_w = round($new_w / $size_ratio);
516 $crop_h = round($new_h / $size_ratio);
518 if ( ! is_array( $crop ) || count( $crop ) !== 2 ) {
519 $crop = array( 'center', 'center' );
522 list( $x, $y ) = $crop;
524 if ( 'left' === $x ) {
526 } elseif ( 'right' === $x ) {
527 $s_x = $orig_w - $crop_w;
529 $s_x = floor( ( $orig_w - $crop_w ) / 2 );
532 if ( 'top' === $y ) {
534 } elseif ( 'bottom' === $y ) {
535 $s_y = $orig_h - $crop_h;
537 $s_y = floor( ( $orig_h - $crop_h ) / 2 );
540 // don't crop, just resize using $dest_w x $dest_h as a maximum bounding box
547 list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h );
550 // if the resulting image would be the same size or larger we don't want to resize it
551 if ( $new_w >= $orig_w && $new_h >= $orig_h && $dest_w != $orig_w && $dest_h != $orig_h ) {
555 // the return array matches the parameters to imagecopyresampled()
556 // int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h
557 return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h );
562 * Resizes an image to make a thumbnail or intermediate size.
564 * The returned array has the file size, the image width, and image height. The
565 * filter 'image_make_intermediate_size' can be used to hook in and change the
566 * values of the returned array. The only parameter is the resized file path.
570 * @param string $file File path.
571 * @param int $width Image width.
572 * @param int $height Image height.
573 * @param bool $crop Optional. Whether to crop image to specified width and height or resize.
575 * @return false|array False, if no image was created. Metadata array on success.
577 function image_make_intermediate_size( $file, $width, $height, $crop = false ) {
578 if ( $width || $height ) {
579 $editor = wp_get_image_editor( $file );
581 if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) )
584 $resized_file = $editor->save();
586 if ( ! is_wp_error( $resized_file ) && $resized_file ) {
587 unset( $resized_file['path'] );
588 return $resized_file;
595 * Retrieves the image's intermediate size (resized) path, width, and height.
597 * The $size parameter can be an array with the width and height respectively.
598 * If the size matches the 'sizes' metadata array for width and height, then it
599 * will be used. If there is no direct match, then the nearest image size larger
600 * than the specified size will be used. If nothing is found, then the function
601 * will break out and return false.
603 * The metadata 'sizes' is used for compatible sizes that can be used for the
604 * parameter $size value.
606 * The url path will be given, when the $size parameter is a string.
608 * If you are passing an array for the $size, you should consider using
609 * add_image_size() so that a cropped version is generated. It's much more
610 * efficient than having to find the closest-sized image and then having the
611 * browser scale down the image.
615 * @param int $post_id Attachment ID.
616 * @param array|string $size Optional. Image size. Accepts any valid image size, or an array
617 * of width and height values in pixels (in that order).
618 * Default 'thumbnail'.
619 * @return false|array $data {
620 * Array of file relative path, width, and height on success. Additionally includes absolute
621 * path and URL if registered size is passed to $size parameter. False on failure.
623 * @type string $file Image's path relative to uploads directory
624 * @type int $width Width of image
625 * @type int $height Height of image
626 * @type string $path Optional. Image's absolute filesystem path. Only returned if registered
627 * size is passed to `$size` parameter.
628 * @type string $url Optional. Image's URL. Only returned if registered size is passed to `$size`
632 function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) {
633 if ( !is_array( $imagedata = wp_get_attachment_metadata( $post_id ) ) )
636 // get the best one for a specified set of dimensions
637 if ( is_array($size) && !empty($imagedata['sizes']) ) {
638 $candidates = array();
640 foreach ( $imagedata['sizes'] as $_size => $data ) {
641 // If there's an exact match to an existing image size, short circuit.
642 if ( $data['width'] == $size[0] && $data['height'] == $size[1] ) {
643 list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
645 /** This filter is documented in wp-includes/media.php */
646 return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size );
648 // If it's not an exact match but it's at least the dimensions requested.
649 if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) {
650 $candidates[ $data['width'] * $data['height'] ] = $_size;
654 if ( ! empty( $candidates ) ) {
655 // find for the smallest image not smaller than the desired size
656 ksort( $candidates );
657 foreach ( $candidates as $_size ) {
658 $data = $imagedata['sizes'][$_size];
660 // Skip images with unexpectedly divergent aspect ratios (crops)
661 // First, we calculate what size the original image would be if constrained to a box the size of the current image in the loop
662 $maybe_cropped = image_resize_dimensions($imagedata['width'], $imagedata['height'], $data['width'], $data['height'], false );
663 // If the size doesn't match within one pixel, then it is of a different aspect ratio, so we skip it, unless it's the thumbnail size
664 if ( 'thumbnail' != $_size &&
666 || ( $maybe_cropped[4] != $data['width'] && $maybe_cropped[4] + 1 != $data['width'] )
667 || ( $maybe_cropped[5] != $data['height'] && $maybe_cropped[5] + 1 != $data['height'] )
671 // If we're still here, then we're going to use this size.
672 list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );
674 /** This filter is documented in wp-includes/media.php */
675 return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size );
680 if ( is_array($size) || empty($size) || empty($imagedata['sizes'][$size]) )
683 $data = $imagedata['sizes'][$size];
684 // include the full filesystem path of the intermediate file
685 if ( empty($data['path']) && !empty($data['file']) ) {
686 $file_url = wp_get_attachment_url($post_id);
687 $data['path'] = path_join( dirname($imagedata['file']), $data['file'] );
688 $data['url'] = path_join( dirname($file_url), $data['file'] );
692 * Filter the output of image_get_intermediate_size()
696 * @see image_get_intermediate_size()
698 * @param array $data Array of file relative path, width, and height on success. May also include
699 * file absolute path and URL.
700 * @param int $post_id The post_id of the image attachment
701 * @param string|array $size Registered image size or flat array of initially-requested height and width
702 * dimensions (in that order).
704 return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size );
708 * Gets the available intermediate image sizes.
712 * @global array $_wp_additional_image_sizes
714 * @return array Returns a filtered array of image size strings.
716 function get_intermediate_image_sizes() {
717 global $_wp_additional_image_sizes;
718 $image_sizes = array('thumbnail', 'medium', 'medium_large', 'large'); // Standard sizes
719 if ( isset( $_wp_additional_image_sizes ) && count( $_wp_additional_image_sizes ) )
720 $image_sizes = array_merge( $image_sizes, array_keys( $_wp_additional_image_sizes ) );
723 * Filter the list of intermediate image sizes.
727 * @param array $image_sizes An array of intermediate image sizes. Defaults
728 * are 'thumbnail', 'medium', 'medium_large', 'large'.
730 return apply_filters( 'intermediate_image_sizes', $image_sizes );
734 * Retrieve an image to represent an attachment.
736 * A mime icon for files, thumbnail or intermediate size for images.
738 * The returned array contains four values: the URL of the attachment image src,
739 * the width of the image file, the height of the image file, and a boolean
740 * representing whether the returned array describes an intermediate (generated)
741 * image size or the original, full-sized upload.
745 * @param int $attachment_id Image attachment ID.
746 * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width
747 * and height values in pixels (in that order). Default 'thumbnail'.
748 * @param bool $icon Optional. Whether the image should be treated as an icon. Default false.
749 * @return false|array Returns an array (url, width, height, is_intermediate), or false, if no image is available.
751 function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) {
752 // get a thumbnail or intermediate image if there is one
753 $image = image_downsize( $attachment_id, $size );
757 if ( $icon && $src = wp_mime_type_icon( $attachment_id ) ) {
758 /** This filter is documented in wp-includes/post.php */
759 $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );
761 $src_file = $icon_dir . '/' . wp_basename( $src );
762 @list( $width, $height ) = getimagesize( $src_file );
765 if ( $src && $width && $height ) {
766 $image = array( $src, $width, $height );
770 * Filter the image src result.
774 * @param array|false $image Either array with src, width & height, icon src, or false.
775 * @param int $attachment_id Image attachment ID.
776 * @param string|array $size Size of image. Image size or array of width and height values
777 * (in that order). Default 'thumbnail'.
778 * @param bool $icon Whether the image should be treated as an icon. Default false.
780 return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon );
784 * Get an HTML img element representing an image attachment
786 * While `$size` will accept an array, it is better to register a size with
787 * add_image_size() so that a cropped version is generated. It's much more
788 * efficient than having to find the closest-sized image and then having the
789 * browser scale down the image.
793 * @param int $attachment_id Image attachment ID.
794 * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width
795 * and height values in pixels (in that order). Default 'thumbnail'.
796 * @param bool $icon Optional. Whether the image should be treated as an icon. Default false.
797 * @param string|array $attr Optional. Attributes for the image markup. Default empty.
798 * @return string HTML img element or empty string on failure.
800 function wp_get_attachment_image($attachment_id, $size = 'thumbnail', $icon = false, $attr = '') {
802 $image = wp_get_attachment_image_src($attachment_id, $size, $icon);
804 list($src, $width, $height) = $image;
805 $hwstring = image_hwstring($width, $height);
807 if ( is_array( $size_class ) ) {
808 $size_class = join( 'x', $size_class );
810 $attachment = get_post($attachment_id);
811 $default_attr = array(
813 'class' => "attachment-$size_class size-$size_class",
814 'alt' => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )), // Use Alt field first
816 if ( empty($default_attr['alt']) )
817 $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not, Use the Caption
818 if ( empty($default_attr['alt']) )
819 $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally, use the title
821 $attr = wp_parse_args( $attr, $default_attr );
823 // Generate 'srcset' and 'sizes' if not already present.
824 if ( empty( $attr['srcset'] ) ) {
825 $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
827 if ( is_array( $image_meta ) ) {
828 $size_array = array( absint( $width ), absint( $height ) );
829 $srcset = wp_calculate_image_srcset( $size_array, $src, $image_meta, $attachment_id );
830 $sizes = wp_calculate_image_sizes( $size_array, $src, $image_meta, $attachment_id );
832 if ( $srcset && ( $sizes || ! empty( $attr['sizes'] ) ) ) {
833 $attr['srcset'] = $srcset;
835 if ( empty( $attr['sizes'] ) ) {
836 $attr['sizes'] = $sizes;
843 * Filter the list of attachment image attributes.
847 * @param array $attr Attributes for the image markup.
848 * @param WP_Post $attachment Image attachment post.
849 * @param string|array $size Requested size. Image size or array of width and height values
850 * (in that order). Default 'thumbnail'.
852 $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size );
853 $attr = array_map( 'esc_attr', $attr );
854 $html = rtrim("<img $hwstring");
855 foreach ( $attr as $name => $value ) {
856 $html .= " $name=" . '"' . $value . '"';
865 * Get the URL of an image attachment.
869 * @param int $attachment_id Image attachment ID.
870 * @param string|array $size Optional. Image size to retrieve. Accepts any valid image size, or an array
871 * of width and height values in pixels (in that order). Default 'thumbnail'.
872 * @param bool $icon Optional. Whether the image should be treated as an icon. Default false.
873 * @return string|false Attachment URL or false if no image is available.
875 function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) {
876 $image = wp_get_attachment_image_src( $attachment_id, $size, $icon );
877 return isset( $image['0'] ) ? $image['0'] : false;
881 * Get the attachment path relative to the upload directory.
886 * @param string $file Attachment file name.
887 * @return string Attachment path relative to the upload directory.
889 function _wp_get_attachment_relative_path( $file ) {
890 $dirname = dirname( $file );
892 if ( '.' === $dirname ) {
896 if ( false !== strpos( $dirname, 'wp-content/uploads' ) ) {
897 // Get the directory name relative to the upload directory (back compat for pre-2.7 uploads)
898 $dirname = substr( $dirname, strpos( $dirname, 'wp-content/uploads' ) + 18 );
899 $dirname = ltrim( $dirname, '/' );
906 * Get the image size as array from its meta data.
908 * Used for responsive images.
913 * @param string $size_name Image size. Accepts any valid image size name ('thumbnail', 'medium', etc.).
914 * @param array $image_meta The image meta data.
915 * @return array|bool Array of width and height values in pixels (in that order)
916 * or false if the size doesn't exist.
918 function _wp_get_image_size_from_meta( $size_name, $image_meta ) {
919 if ( $size_name === 'full' ) {
921 absint( $image_meta['width'] ),
922 absint( $image_meta['height'] ),
924 } elseif ( ! empty( $image_meta['sizes'][$size_name] ) ) {
926 absint( $image_meta['sizes'][$size_name]['width'] ),
927 absint( $image_meta['sizes'][$size_name]['height'] ),
935 * Retrieves the value for an image attachment's 'srcset' attribute.
939 * @see wp_calculate_image_srcset()
941 * @param int $attachment_id Image attachment ID.
942 * @param array|string $size Optional. Image size. Accepts any valid image size, or an array of
943 * width and height values in pixels (in that order). Default 'medium'.
944 * @param array $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
946 * @return string|bool A 'srcset' value string or false.
948 function wp_get_attachment_image_srcset( $attachment_id, $size = 'medium', $image_meta = null ) {
949 if ( ! $image = wp_get_attachment_image_src( $attachment_id, $size ) ) {
953 if ( ! is_array( $image_meta ) ) {
954 $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
957 $image_src = $image[0];
963 return wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id );
967 * A helper function to calculate the image sources to include in a 'srcset' attribute.
971 * @param array $size_array Array of width and height values in pixels (in that order).
972 * @param string $image_src The 'src' of the image.
973 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'.
974 * @param int $attachment_id Optional. The image attachment ID to pass to the filter. Default 0.
975 * @return string|bool The 'srcset' attribute value. False on error or when only one source exists.
977 function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id = 0 ) {
979 * Let plugins pre-filter the image meta to be able to fix inconsistencies in the stored data.
981 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'.
982 * @param array $size_array Array of width and height values in pixels (in that order).
983 * @param string $image_src The 'src' of the image.
984 * @param int $attachment_id The image attachment ID or 0 if not supplied.
986 $image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id );
988 if ( empty( $image_meta['sizes'] ) || ! isset( $image_meta['file'] ) || strlen( $image_meta['file'] ) < 4 ) {
992 $image_sizes = $image_meta['sizes'];
994 // Get the width and height of the image.
995 $image_width = (int) $size_array[0];
996 $image_height = (int) $size_array[1];
998 // Bail early if error/no width.
999 if ( $image_width < 1 ) {
1003 $image_basename = wp_basename( $image_meta['file'] );
1006 * WordPress flattens animated GIFs into one frame when generating intermediate sizes.
1007 * To avoid hiding animation in user content, if src is a full size GIF, a srcset attribute is not generated.
1008 * If src is an intermediate size GIF, the full size is excluded from srcset to keep a flattened GIF from becoming animated.
1010 if ( ! isset( $image_sizes['thumbnail']['mime-type'] ) || 'image/gif' !== $image_sizes['thumbnail']['mime-type'] ) {
1011 $image_sizes['full'] = array(
1012 'width' => $image_meta['width'],
1013 'height' => $image_meta['height'],
1014 'file' => $image_basename,
1016 } elseif ( strpos( $image_src, $image_meta['file'] ) ) {
1020 // Retrieve the uploads sub-directory from the full size image.
1021 $dirname = _wp_get_attachment_relative_path( $image_meta['file'] );
1024 $dirname = trailingslashit( $dirname );
1027 $upload_dir = wp_get_upload_dir();
1028 $image_baseurl = trailingslashit( $upload_dir['baseurl'] ) . $dirname;
1031 * If currently on HTTPS, prefer HTTPS URLs when we know they're supported by the domain
1032 * (which is to say, when they share the domain name of the current request).
1034 if ( is_ssl() && 'https' !== substr( $image_baseurl, 0, 5 ) && parse_url( $image_baseurl, PHP_URL_HOST ) === $_SERVER['HTTP_HOST'] ) {
1035 $image_baseurl = set_url_scheme( $image_baseurl, 'https' );
1039 * Images that have been edited in WordPress after being uploaded will
1040 * contain a unique hash. Look for that hash and use it later to filter
1041 * out images that are leftovers from previous versions.
1043 $image_edited = preg_match( '/-e[0-9]{13}/', wp_basename( $image_src ), $image_edit_hash );
1046 * Filter the maximum image width to be included in a 'srcset' attribute.
1050 * @param int $max_width The maximum image width to be included in the 'srcset'. Default '1600'.
1051 * @param array $size_array Array of width and height values in pixels (in that order).
1053 $max_srcset_image_width = apply_filters( 'max_srcset_image_width', 1600, $size_array );
1055 // Array to hold URL candidates.
1059 * To make sure the ID matches our image src, we will check to see if any sizes in our attachment
1060 * meta match our $image_src. If no matches are found we don't return a srcset to avoid serving
1061 * an incorrect image. See #35045.
1063 $src_matched = false;
1066 * Loop through available images. Only use images that are resized
1067 * versions of the same edit.
1069 foreach ( $image_sizes as $image ) {
1072 // Check if image meta isn't corrupted.
1073 if ( ! is_array( $image ) ) {
1077 // If the file name is part of the `src`, we've confirmed a match.
1078 if ( ! $src_matched && false !== strpos( $image_src, $dirname . $image['file'] ) ) {
1079 $src_matched = $is_src = true;
1082 // Filter out images that are from previous edits.
1083 if ( $image_edited && ! strpos( $image['file'], $image_edit_hash[0] ) ) {
1088 * Filter out images that are wider than '$max_srcset_image_width' unless
1089 * that file is in the 'src' attribute.
1091 if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width && ! $is_src ) {
1096 * To check for varying crops, we calculate the expected size of the smaller
1097 * image if the larger were constrained by the width of the smaller and then
1098 * see if it matches what we're expecting.
1100 if ( $image_width > $image['width'] ) {
1101 $constrained_size = wp_constrain_dimensions( $image_width, $image_height, $image['width'] );
1102 $expected_size = array( $image['width'], $image['height'] );
1104 $constrained_size = wp_constrain_dimensions( $image['width'], $image['height'], $image_width );
1105 $expected_size = array( $image_width, $image_height );
1108 // If the image dimensions are within 1px of the expected size, use it.
1109 if ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ) {
1110 // Add the URL, descriptor, and value to the sources array to be returned.
1112 'url' => $image_baseurl . $image['file'],
1113 'descriptor' => 'w',
1114 'value' => $image['width'],
1117 // The 'src' image has to be the first in the 'srcset', because of a bug in iOS8. See #35030.
1119 $sources = array( $image['width'] => $source ) + $sources;
1121 $sources[ $image['width'] ] = $source;
1127 * Filter an image's 'srcset' sources.
1131 * @param array $sources {
1132 * One or more arrays of source data to include in the 'srcset'.
1134 * @type array $width {
1135 * @type string $url The URL of an image source.
1136 * @type string $descriptor The descriptor type used in the image candidate string,
1137 * either 'w' or 'x'.
1138 * @type int $value The source width if paired with a 'w' descriptor, or a
1139 * pixel density value if paired with an 'x' descriptor.
1142 * @param array $size_array Array of width and height values in pixels (in that order).
1143 * @param string $image_src The 'src' of the image.
1144 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'.
1145 * @param int $attachment_id Image attachment ID or 0.
1147 $sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id );
1149 // Only return a 'srcset' value if there is more than one source.
1150 if ( ! $src_matched || count( $sources ) < 2 ) {
1156 foreach ( $sources as $source ) {
1157 $srcset .= $source['url'] . ' ' . $source['value'] . $source['descriptor'] . ', ';
1160 return rtrim( $srcset, ', ' );
1164 * Retrieves the value for an image attachment's 'sizes' attribute.
1168 * @see wp_calculate_image_sizes()
1170 * @param int $attachment_id Image attachment ID.
1171 * @param array|string $size Optional. Image size. Accepts any valid image size, or an array of width
1172 * and height values in pixels (in that order). Default 'medium'.
1173 * @param array $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
1175 * @return string|bool A valid source size value for use in a 'sizes' attribute or false.
1177 function wp_get_attachment_image_sizes( $attachment_id, $size = 'medium', $image_meta = null ) {
1178 if ( ! $image = wp_get_attachment_image_src( $attachment_id, $size ) ) {
1182 if ( ! is_array( $image_meta ) ) {
1183 $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
1186 $image_src = $image[0];
1187 $size_array = array(
1188 absint( $image[1] ),
1192 return wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id );
1196 * Creates a 'sizes' attribute value for an image.
1200 * @param array|string $size Image size to retrieve. Accepts any valid image size, or an array
1201 * of width and height values in pixels (in that order). Default 'medium'.
1202 * @param string $image_src Optional. The URL to the image file. Default null.
1203 * @param array $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
1205 * @param int $attachment_id Optional. Image attachment ID. Either `$image_meta` or `$attachment_id`
1206 * is needed when using the image size name as argument for `$size`. Default 0.
1207 * @return string|bool A valid source size value for use in a 'sizes' attribute or false.
1209 function wp_calculate_image_sizes( $size, $image_src = null, $image_meta = null, $attachment_id = 0 ) {
1212 if ( is_array( $size ) ) {
1213 $width = absint( $size[0] );
1214 } elseif ( is_string( $size ) ) {
1215 if ( ! $image_meta && $attachment_id ) {
1216 $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
1219 if ( is_array( $image_meta ) ) {
1220 $size_array = _wp_get_image_size_from_meta( $size, $image_meta );
1221 if ( $size_array ) {
1222 $width = absint( $size_array[0] );
1231 // Setup the default 'sizes' attribute.
1232 $sizes = sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width );
1235 * Filter the output of 'wp_calculate_image_sizes()'.
1239 * @param string $sizes A source size value for use in a 'sizes' attribute.
1240 * @param array|string $size Requested size. Image size or array of width and height values
1241 * in pixels (in that order).
1242 * @param string|null $image_src The URL to the image file or null.
1243 * @param array|null $image_meta The image meta data as returned by wp_get_attachment_metadata() or null.
1244 * @param int $attachment_id Image attachment ID of the original image or 0.
1246 return apply_filters( 'wp_calculate_image_sizes', $sizes, $size, $image_src, $image_meta, $attachment_id );
1250 * Filters 'img' elements in post content to add 'srcset' and 'sizes' attributes.
1254 * @see wp_image_add_srcset_and_sizes()
1256 * @param string $content The raw post content to be filtered.
1257 * @return string Converted content with 'srcset' and 'sizes' attributes added to images.
1259 function wp_make_content_images_responsive( $content ) {
1260 if ( ! preg_match_all( '/<img [^>]+>/', $content, $matches ) ) {
1264 $selected_images = $attachment_ids = array();
1266 foreach( $matches[0] as $image ) {
1267 if ( false === strpos( $image, ' srcset=' ) && preg_match( '/wp-image-([0-9]+)/i', $image, $class_id ) &&
1268 ( $attachment_id = absint( $class_id[1] ) ) ) {
1271 * If exactly the same image tag is used more than once, overwrite it.
1272 * All identical tags will be replaced later with 'str_replace()'.
1274 $selected_images[ $image ] = $attachment_id;
1275 // Overwrite the ID when the same image is included more than once.
1276 $attachment_ids[ $attachment_id ] = true;
1280 if ( count( $attachment_ids ) > 1 ) {
1282 * Warm object cache for use with 'get_post_meta()'.
1284 * To avoid making a database call for each image, a single query
1285 * warms the object cache with the meta information for all images.
1287 update_meta_cache( 'post', array_keys( $attachment_ids ) );
1290 foreach ( $selected_images as $image => $attachment_id ) {
1291 $image_meta = get_post_meta( $attachment_id, '_wp_attachment_metadata', true );
1292 $content = str_replace( $image, wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ), $content );
1299 * Adds 'srcset' and 'sizes' attributes to an existing 'img' element.
1303 * @see wp_calculate_image_srcset()
1304 * @see wp_calculate_image_sizes()
1306 * @param string $image An HTML 'img' element to be filtered.
1307 * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'.
1308 * @param int $attachment_id Image attachment ID.
1309 * @return string Converted 'img' element with 'srcset' and 'sizes' attributes added.
1311 function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) {
1312 // Ensure the image meta exists.
1313 if ( empty( $image_meta['sizes'] ) ) {
1317 $image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : '';
1318 list( $image_src ) = explode( '?', $image_src );
1320 // Return early if we couldn't get the image source.
1321 if ( ! $image_src ) {
1325 // Bail early if an image has been inserted and later edited.
1326 if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash ) &&
1327 strpos( wp_basename( $image_src ), $img_edit_hash[0] ) === false ) {
1332 $width = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0;
1333 $height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0;
1335 if ( ! $width || ! $height ) {
1337 * If attempts to parse the size value failed, attempt to use the image meta data to match
1338 * the image file name from 'src' against the available sizes for an attachment.
1340 $image_filename = wp_basename( $image_src );
1342 if ( $image_filename === wp_basename( $image_meta['file'] ) ) {
1343 $width = (int) $image_meta['width'];
1344 $height = (int) $image_meta['height'];
1346 foreach( $image_meta['sizes'] as $image_size_data ) {
1347 if ( $image_filename === $image_size_data['file'] ) {
1348 $width = (int) $image_size_data['width'];
1349 $height = (int) $image_size_data['height'];
1356 if ( ! $width || ! $height ) {
1360 $size_array = array( $width, $height );
1361 $srcset = wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id );
1364 // Check if there is already a 'sizes' attribute.
1365 $sizes = strpos( $image, ' sizes=' );
1368 $sizes = wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id );
1372 if ( $srcset && $sizes ) {
1373 // Format the 'srcset' and 'sizes' string and escape attributes.
1374 $attr = sprintf( ' srcset="%s"', esc_attr( $srcset ) );
1376 if ( is_string( $sizes ) ) {
1377 $attr .= sprintf( ' sizes="%s"', esc_attr( $sizes ) );
1380 // Add 'srcset' and 'sizes' attributes to the image markup.
1381 $image = preg_replace( '/<img ([^>]+?)[\/ ]*>/', '<img $1' . $attr . ' />', $image );
1388 * Adds a 'wp-post-image' class to post thumbnails. Internal use only.
1390 * Uses the 'begin_fetch_post_thumbnail_html' and 'end_fetch_post_thumbnail_html' action hooks to
1391 * dynamically add/remove itself so as to only filter post thumbnails.
1396 * @param array $attr Thumbnail attributes including src, class, alt, title.
1397 * @return array Modified array of attributes including the new 'wp-post-image' class.
1399 function _wp_post_thumbnail_class_filter( $attr ) {
1400 $attr['class'] .= ' wp-post-image';
1405 * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes'
1406 * filter hook. Internal use only.
1411 * @param array $attr Thumbnail attributes including src, class, alt, title.
1413 function _wp_post_thumbnail_class_filter_add( $attr ) {
1414 add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
1418 * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes'
1419 * filter hook. Internal use only.
1424 * @param array $attr Thumbnail attributes including src, class, alt, title.
1426 function _wp_post_thumbnail_class_filter_remove( $attr ) {
1427 remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
1430 add_shortcode('wp_caption', 'img_caption_shortcode');
1431 add_shortcode('caption', 'img_caption_shortcode');
1434 * Builds the Caption shortcode output.
1436 * Allows a plugin to replace the content that would otherwise be returned. The
1437 * filter is 'img_caption_shortcode' and passes an empty string, the attr
1438 * parameter and the content parameter values.
1440 * The supported attributes for the shortcode are 'id', 'align', 'width', and
1445 * @param array $attr {
1446 * Attributes of the caption shortcode.
1448 * @type string $id ID of the div element for the caption.
1449 * @type string $align Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft',
1450 * 'aligncenter', alignright', 'alignnone'.
1451 * @type int $width The width of the caption, in pixels.
1452 * @type string $caption The caption text.
1453 * @type string $class Additional class name(s) added to the caption container.
1455 * @param string $content Shortcode content.
1456 * @return string HTML content to display the caption.
1458 function img_caption_shortcode( $attr, $content = null ) {
1459 // New-style shortcode with the caption inside the shortcode with the link and image tags.
1460 if ( ! isset( $attr['caption'] ) ) {
1461 if ( preg_match( '#((?:<a [^>]+>\s*)?<img [^>]+>(?:\s*</a>)?)(.*)#is', $content, $matches ) ) {
1462 $content = $matches[1];
1463 $attr['caption'] = trim( $matches[2] );
1465 } elseif ( strpos( $attr['caption'], '<' ) !== false ) {
1466 $attr['caption'] = wp_kses( $attr['caption'], 'post' );
1470 * Filter the default caption shortcode output.
1472 * If the filtered output isn't empty, it will be used instead of generating
1473 * the default caption template.
1477 * @see img_caption_shortcode()
1479 * @param string $output The caption output. Default empty.
1480 * @param array $attr Attributes of the caption shortcode.
1481 * @param string $content The image element, possibly wrapped in a hyperlink.
1483 $output = apply_filters( 'img_caption_shortcode', '', $attr, $content );
1484 if ( $output != '' )
1487 $atts = shortcode_atts( array(
1489 'align' => 'alignnone',
1493 ), $attr, 'caption' );
1495 $atts['width'] = (int) $atts['width'];
1496 if ( $atts['width'] < 1 || empty( $atts['caption'] ) )
1499 if ( ! empty( $atts['id'] ) )
1500 $atts['id'] = 'id="' . esc_attr( sanitize_html_class( $atts['id'] ) ) . '" ';
1502 $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] );
1504 $html5 = current_theme_supports( 'html5', 'caption' );
1505 // HTML5 captions never added the extra 10px to the image width
1506 $width = $html5 ? $atts['width'] : ( 10 + $atts['width'] );
1509 * Filter the width of an image's caption.
1511 * By default, the caption is 10 pixels greater than the width of the image,
1512 * to prevent post content from running up against a floated image.
1516 * @see img_caption_shortcode()
1518 * @param int $width Width of the caption in pixels. To remove this inline style,
1520 * @param array $atts Attributes of the caption shortcode.
1521 * @param string $content The image element, possibly wrapped in a hyperlink.
1523 $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content );
1526 if ( $caption_width )
1527 $style = 'style="width: ' . (int) $caption_width . 'px" ';
1531 $html = '<figure ' . $atts['id'] . $style . 'class="' . esc_attr( $class ) . '">'
1532 . do_shortcode( $content ) . '<figcaption class="wp-caption-text">' . $atts['caption'] . '</figcaption></figure>';
1534 $html = '<div ' . $atts['id'] . $style . 'class="' . esc_attr( $class ) . '">'
1535 . do_shortcode( $content ) . '<p class="wp-caption-text">' . $atts['caption'] . '</p></div>';
1541 add_shortcode('gallery', 'gallery_shortcode');
1544 * Builds the Gallery shortcode output.
1546 * This implements the functionality of the Gallery Shortcode for displaying
1547 * WordPress images on a post.
1551 * @staticvar int $instance
1553 * @param array $attr {
1554 * Attributes of the gallery shortcode.
1556 * @type string $order Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'.
1557 * @type string $orderby The field to use when ordering the images. Default 'menu_order ID'.
1558 * Accepts any valid SQL ORDERBY statement.
1559 * @type int $id Post ID.
1560 * @type string $itemtag HTML tag to use for each image in the gallery.
1561 * Default 'dl', or 'figure' when the theme registers HTML5 gallery support.
1562 * @type string $icontag HTML tag to use for each image's icon.
1563 * Default 'dt', or 'div' when the theme registers HTML5 gallery support.
1564 * @type string $captiontag HTML tag to use for each image's caption.
1565 * Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support.
1566 * @type int $columns Number of columns of images to display. Default 3.
1567 * @type string|array $size Size of the images to display. Accepts any valid image size, or an array of width
1568 * and height values in pixels (in that order). Default 'thumbnail'.
1569 * @type string $ids A comma-separated list of IDs of attachments to display. Default empty.
1570 * @type string $include A comma-separated list of IDs of attachments to include. Default empty.
1571 * @type string $exclude A comma-separated list of IDs of attachments to exclude. Default empty.
1572 * @type string $link What to link each image to. Default empty (links to the attachment page).
1573 * Accepts 'file', 'none'.
1575 * @return string HTML content to display gallery.
1577 function gallery_shortcode( $attr ) {
1580 static $instance = 0;
1583 if ( ! empty( $attr['ids'] ) ) {
1584 // 'ids' is explicitly ordered, unless you specify otherwise.
1585 if ( empty( $attr['orderby'] ) ) {
1586 $attr['orderby'] = 'post__in';
1588 $attr['include'] = $attr['ids'];
1592 * Filter the default gallery shortcode output.
1594 * If the filtered output isn't empty, it will be used instead of generating
1595 * the default gallery template.
1598 * @since 4.2.0 The `$instance` parameter was added.
1600 * @see gallery_shortcode()
1602 * @param string $output The gallery output. Default empty.
1603 * @param array $attr Attributes of the gallery shortcode.
1604 * @param int $instance Unique numeric ID of this gallery shortcode instance.
1606 $output = apply_filters( 'post_gallery', '', $attr, $instance );
1607 if ( $output != '' ) {
1611 $html5 = current_theme_supports( 'html5', 'gallery' );
1612 $atts = shortcode_atts( array(
1614 'orderby' => 'menu_order ID',
1615 'id' => $post ? $post->ID : 0,
1616 'itemtag' => $html5 ? 'figure' : 'dl',
1617 'icontag' => $html5 ? 'div' : 'dt',
1618 'captiontag' => $html5 ? 'figcaption' : 'dd',
1620 'size' => 'thumbnail',
1624 ), $attr, 'gallery' );
1626 $id = intval( $atts['id'] );
1628 if ( ! empty( $atts['include'] ) ) {
1629 $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
1631 $attachments = array();
1632 foreach ( $_attachments as $key => $val ) {
1633 $attachments[$val->ID] = $_attachments[$key];
1635 } elseif ( ! empty( $atts['exclude'] ) ) {
1636 $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
1638 $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
1641 if ( empty( $attachments ) ) {
1647 foreach ( $attachments as $att_id => $attachment ) {
1648 $output .= wp_get_attachment_link( $att_id, $atts['size'], true ) . "\n";
1653 $itemtag = tag_escape( $atts['itemtag'] );
1654 $captiontag = tag_escape( $atts['captiontag'] );
1655 $icontag = tag_escape( $atts['icontag'] );
1656 $valid_tags = wp_kses_allowed_html( 'post' );
1657 if ( ! isset( $valid_tags[ $itemtag ] ) ) {
1660 if ( ! isset( $valid_tags[ $captiontag ] ) ) {
1663 if ( ! isset( $valid_tags[ $icontag ] ) ) {
1667 $columns = intval( $atts['columns'] );
1668 $itemwidth = $columns > 0 ? floor(100/$columns) : 100;
1669 $float = is_rtl() ? 'right' : 'left';
1671 $selector = "gallery-{$instance}";
1673 $gallery_style = '';
1676 * Filter whether to print default gallery styles.
1680 * @param bool $print Whether to print default gallery styles.
1681 * Defaults to false if the theme supports HTML5 galleries.
1682 * Otherwise, defaults to true.
1684 if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) {
1686 <style type='text/css'>
1690 #{$selector} .gallery-item {
1694 width: {$itemwidth}%;
1697 border: 2px solid #cfcfcf;
1699 #{$selector} .gallery-caption {
1702 /* see gallery_shortcode() in wp-includes/media.php */
1706 $size_class = sanitize_html_class( $atts['size'] );
1707 $gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>";
1710 * Filter the default gallery shortcode CSS styles.
1714 * @param string $gallery_style Default CSS styles and opening HTML div container
1715 * for the gallery shortcode output.
1717 $output = apply_filters( 'gallery_style', $gallery_style . $gallery_div );
1720 foreach ( $attachments as $id => $attachment ) {
1722 $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : '';
1723 if ( ! empty( $atts['link'] ) && 'file' === $atts['link'] ) {
1724 $image_output = wp_get_attachment_link( $id, $atts['size'], false, false, false, $attr );
1725 } elseif ( ! empty( $atts['link'] ) && 'none' === $atts['link'] ) {
1726 $image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr );
1728 $image_output = wp_get_attachment_link( $id, $atts['size'], true, false, false, $attr );
1730 $image_meta = wp_get_attachment_metadata( $id );
1733 if ( isset( $image_meta['height'], $image_meta['width'] ) ) {
1734 $orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape';
1736 $output .= "<{$itemtag} class='gallery-item'>";
1738 <{$icontag} class='gallery-icon {$orientation}'>
1741 if ( $captiontag && trim($attachment->post_excerpt) ) {
1743 <{$captiontag} class='wp-caption-text gallery-caption' id='$selector-$id'>
1744 " . wptexturize($attachment->post_excerpt) . "
1747 $output .= "</{$itemtag}>";
1748 if ( ! $html5 && $columns > 0 && ++$i % $columns == 0 ) {
1749 $output .= '<br style="clear: both" />';
1753 if ( ! $html5 && $columns > 0 && $i % $columns !== 0 ) {
1755 <br style='clear: both' />";
1765 * Outputs the templates used by playlists.
1769 function wp_underscore_playlist_templates() {
1771 <script type="text/html" id="tmpl-wp-playlist-current-item">
1772 <# if ( data.image ) { #>
1773 <img src="{{ data.thumb.src }}" alt="" />
1775 <div class="wp-playlist-caption">
1776 <span class="wp-playlist-item-meta wp-playlist-item-title"><?php
1777 /* translators: playlist item title */
1778 printf( _x( '“%s”', 'playlist item title' ), '{{ data.title }}' );
1780 <# if ( data.meta.album ) { #><span class="wp-playlist-item-meta wp-playlist-item-album">{{ data.meta.album }}</span><# } #>
1781 <# if ( data.meta.artist ) { #><span class="wp-playlist-item-meta wp-playlist-item-artist">{{ data.meta.artist }}</span><# } #>
1784 <script type="text/html" id="tmpl-wp-playlist-item">
1785 <div class="wp-playlist-item">
1786 <a class="wp-playlist-caption" href="{{ data.src }}">
1787 {{ data.index ? ( data.index + '. ' ) : '' }}
1788 <# if ( data.caption ) { #>
1791 <span class="wp-playlist-item-title"><?php
1792 /* translators: playlist item title */
1793 printf( _x( '“%s”', 'playlist item title' ), '{{{ data.title }}}' );
1795 <# if ( data.artists && data.meta.artist ) { #>
1796 <span class="wp-playlist-item-artist"> — {{ data.meta.artist }}</span>
1800 <# if ( data.meta.length_formatted ) { #>
1801 <div class="wp-playlist-item-length">{{ data.meta.length_formatted }}</div>
1809 * Outputs and enqueue default scripts and styles for playlists.
1813 * @param string $type Type of playlist. Accepts 'audio' or 'video'.
1815 function wp_playlist_scripts( $type ) {
1816 wp_enqueue_style( 'wp-mediaelement' );
1817 wp_enqueue_script( 'wp-playlist' );
1819 <!--[if lt IE 9]><script>document.createElement('<?php echo esc_js( $type ) ?>');</script><![endif]-->
1821 add_action( 'wp_footer', 'wp_underscore_playlist_templates', 0 );
1822 add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 );
1826 * Builds the Playlist shortcode output.
1828 * This implements the functionality of the playlist shortcode for displaying
1829 * a collection of WordPress audio or video files in a post.
1833 * @global int $content_width
1834 * @staticvar int $instance
1836 * @param array $attr {
1837 * Array of default playlist attributes.
1839 * @type string $type Type of playlist to display. Accepts 'audio' or 'video'. Default 'audio'.
1840 * @type string $order Designates ascending or descending order of items in the playlist.
1841 * Accepts 'ASC', 'DESC'. Default 'ASC'.
1842 * @type string $orderby Any column, or columns, to sort the playlist. If $ids are
1843 * passed, this defaults to the order of the $ids array ('post__in').
1844 * Otherwise default is 'menu_order ID'.
1845 * @type int $id If an explicit $ids array is not present, this parameter
1846 * will determine which attachments are used for the playlist.
1847 * Default is the current post ID.
1848 * @type array $ids Create a playlist out of these explicit attachment IDs. If empty,
1849 * a playlist will be created from all $type attachments of $id.
1851 * @type array $exclude List of specific attachment IDs to exclude from the playlist. Default empty.
1852 * @type string $style Playlist style to use. Accepts 'light' or 'dark'. Default 'light'.
1853 * @type bool $tracklist Whether to show or hide the playlist. Default true.
1854 * @type bool $tracknumbers Whether to show or hide the numbers next to entries in the playlist. Default true.
1855 * @type bool $images Show or hide the video or audio thumbnail (Featured Image/post
1856 * thumbnail). Default true.
1857 * @type bool $artists Whether to show or hide artist name in the playlist. Default true.
1860 * @return string Playlist output. Empty string if the passed type is unsupported.
1862 function wp_playlist_shortcode( $attr ) {
1863 global $content_width;
1866 static $instance = 0;
1869 if ( ! empty( $attr['ids'] ) ) {
1870 // 'ids' is explicitly ordered, unless you specify otherwise.
1871 if ( empty( $attr['orderby'] ) ) {
1872 $attr['orderby'] = 'post__in';
1874 $attr['include'] = $attr['ids'];
1878 * Filter the playlist output.
1880 * Passing a non-empty value to the filter will short-circuit generation
1881 * of the default playlist output, returning the passed value instead.
1884 * @since 4.2.0 The `$instance` parameter was added.
1886 * @param string $output Playlist output. Default empty.
1887 * @param array $attr An array of shortcode attributes.
1888 * @param int $instance Unique numeric ID of this playlist shortcode instance.
1890 $output = apply_filters( 'post_playlist', '', $attr, $instance );
1891 if ( $output != '' ) {
1895 $atts = shortcode_atts( array(
1898 'orderby' => 'menu_order ID',
1899 'id' => $post ? $post->ID : 0,
1903 'tracklist' => true,
1904 'tracknumbers' => true,
1907 ), $attr, 'playlist' );
1909 $id = intval( $atts['id'] );
1911 if ( $atts['type'] !== 'audio' ) {
1912 $atts['type'] = 'video';
1916 'post_status' => 'inherit',
1917 'post_type' => 'attachment',
1918 'post_mime_type' => $atts['type'],
1919 'order' => $atts['order'],
1920 'orderby' => $atts['orderby']
1923 if ( ! empty( $atts['include'] ) ) {
1924 $args['include'] = $atts['include'];
1925 $_attachments = get_posts( $args );
1927 $attachments = array();
1928 foreach ( $_attachments as $key => $val ) {
1929 $attachments[$val->ID] = $_attachments[$key];
1931 } elseif ( ! empty( $atts['exclude'] ) ) {
1932 $args['post_parent'] = $id;
1933 $args['exclude'] = $atts['exclude'];
1934 $attachments = get_children( $args );
1936 $args['post_parent'] = $id;
1937 $attachments = get_children( $args );
1940 if ( empty( $attachments ) ) {
1946 foreach ( $attachments as $att_id => $attachment ) {
1947 $output .= wp_get_attachment_link( $att_id ) . "\n";
1952 $outer = 22; // default padding and border of wrapper
1954 $default_width = 640;
1955 $default_height = 360;
1957 $theme_width = empty( $content_width ) ? $default_width : ( $content_width - $outer );
1958 $theme_height = empty( $content_width ) ? $default_height : round( ( $default_height * $theme_width ) / $default_width );
1961 'type' => $atts['type'],
1962 // don't pass strings to JSON, will be truthy in JS
1963 'tracklist' => wp_validate_boolean( $atts['tracklist'] ),
1964 'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ),
1965 'images' => wp_validate_boolean( $atts['images'] ),
1966 'artists' => wp_validate_boolean( $atts['artists'] ),
1970 foreach ( $attachments as $attachment ) {
1971 $url = wp_get_attachment_url( $attachment->ID );
1972 $ftype = wp_check_filetype( $url, wp_get_mime_types() );
1975 'type' => $ftype['type'],
1976 'title' => $attachment->post_title,
1977 'caption' => $attachment->post_excerpt,
1978 'description' => $attachment->post_content
1981 $track['meta'] = array();
1982 $meta = wp_get_attachment_metadata( $attachment->ID );
1983 if ( ! empty( $meta ) ) {
1985 foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) {
1986 if ( ! empty( $meta[ $key ] ) ) {
1987 $track['meta'][ $key ] = $meta[ $key ];
1991 if ( 'video' === $atts['type'] ) {
1992 if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) {
1993 $width = $meta['width'];
1994 $height = $meta['height'];
1995 $theme_height = round( ( $height * $theme_width ) / $width );
1997 $width = $default_width;
1998 $height = $default_height;
2001 $track['dimensions'] = array(
2002 'original' => compact( 'width', 'height' ),
2004 'width' => $theme_width,
2005 'height' => $theme_height
2011 if ( $atts['images'] ) {
2012 $thumb_id = get_post_thumbnail_id( $attachment->ID );
2013 if ( ! empty( $thumb_id ) ) {
2014 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' );
2015 $track['image'] = compact( 'src', 'width', 'height' );
2016 list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' );
2017 $track['thumb'] = compact( 'src', 'width', 'height' );
2019 $src = wp_mime_type_icon( $attachment->ID );
2022 $track['image'] = compact( 'src', 'width', 'height' );
2023 $track['thumb'] = compact( 'src', 'width', 'height' );
2029 $data['tracks'] = $tracks;
2031 $safe_type = esc_attr( $atts['type'] );
2032 $safe_style = esc_attr( $atts['style'] );
2036 if ( 1 === $instance ) {
2038 * Print and enqueue playlist scripts, styles, and JavaScript templates.
2042 * @param string $type Type of playlist. Possible values are 'audio' or 'video'.
2043 * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'.
2045 do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] );
2047 <div class="wp-playlist wp-<?php echo $safe_type ?>-playlist wp-playlist-<?php echo $safe_style ?>">
2048 <?php if ( 'audio' === $atts['type'] ): ?>
2049 <div class="wp-playlist-current-item"></div>
2051 <<?php echo $safe_type ?> controls="controls" preload="none" width="<?php
2052 echo (int) $theme_width;
2053 ?>"<?php if ( 'video' === $safe_type ):
2054 echo ' height="', (int) $theme_height, '"';
2056 echo ' style="visibility: hidden"';
2057 endif; ?>></<?php echo $safe_type ?>>
2058 <div class="wp-playlist-next"></div>
2059 <div class="wp-playlist-prev"></div>
2062 foreach ( $attachments as $att_id => $attachment ) {
2063 printf( '<li>%s</li>', wp_get_attachment_link( $att_id ) );
2067 <script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $data ) ?></script>
2070 return ob_get_clean();
2072 add_shortcode( 'playlist', 'wp_playlist_shortcode' );
2075 * Provides a No-JS Flash fallback as a last resort for audio / video.
2079 * @param string $url The media element URL.
2080 * @return string Fallback HTML.
2082 function wp_mediaelement_fallback( $url ) {
2084 * Filter the Mediaelement fallback output for no-JS.
2088 * @param string $output Fallback output for no-JS.
2089 * @param string $url Media file URL.
2091 return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url );
2095 * Returns a filtered list of WP-supported audio formats.
2099 * @return array Supported audio formats.
2101 function wp_get_audio_extensions() {
2103 * Filter the list of supported audio formats.
2107 * @param array $extensions An array of support audio formats. Defaults are
2108 * 'mp3', 'ogg', 'wma', 'm4a', 'wav'.
2110 return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'wma', 'm4a', 'wav' ) );
2114 * Returns useful keys to use to lookup data from an attachment's stored metadata.
2118 * @param WP_Post $attachment The current attachment, provided for context.
2119 * @param string $context Optional. The context. Accepts 'edit', 'display'. Default 'display'.
2120 * @return array Key/value pairs of field keys to labels.
2122 function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) {
2124 'artist' => __( 'Artist' ),
2125 'album' => __( 'Album' ),
2128 if ( 'display' === $context ) {
2129 $fields['genre'] = __( 'Genre' );
2130 $fields['year'] = __( 'Year' );
2131 $fields['length_formatted'] = _x( 'Length', 'video or audio' );
2132 } elseif ( 'js' === $context ) {
2133 $fields['bitrate'] = __( 'Bitrate' );
2134 $fields['bitrate_mode'] = __( 'Bitrate Mode' );
2138 * Filter the editable list of keys to look up data from an attachment's metadata.
2142 * @param array $fields Key/value pairs of field keys to labels.
2143 * @param WP_Post $attachment Attachment object.
2144 * @param string $context The context. Accepts 'edit', 'display'. Default 'display'.
2146 return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context );
2149 * Builds the Audio shortcode output.
2151 * This implements the functionality of the Audio Shortcode for displaying
2152 * WordPress mp3s in a post.
2156 * @staticvar int $instance
2158 * @param array $attr {
2159 * Attributes of the audio shortcode.
2161 * @type string $src URL to the source of the audio file. Default empty.
2162 * @type string $loop The 'loop' attribute for the `<audio>` element. Default empty.
2163 * @type string $autoplay The 'autoplay' attribute for the `<audio>` element. Default empty.
2164 * @type string $preload The 'preload' attribute for the `<audio>` element. Default 'none'.
2165 * @type string $class The 'class' attribute for the `<audio>` element. Default 'wp-audio-shortcode'.
2166 * @type string $style The 'style' attribute for the `<audio>` element. Default 'width: 100%; visibility: hidden;'.
2168 * @param string $content Shortcode content.
2169 * @return string|void HTML content to display audio.
2171 function wp_audio_shortcode( $attr, $content = '' ) {
2172 $post_id = get_post() ? get_the_ID() : 0;
2174 static $instance = 0;
2178 * Filter the default audio shortcode output.
2180 * If the filtered output isn't empty, it will be used instead of generating the default audio template.
2184 * @param string $html Empty variable to be replaced with shortcode markup.
2185 * @param array $attr Attributes of the shortcode. @see wp_audio_shortcode()
2186 * @param string $content Shortcode content.
2187 * @param int $instance Unique numeric ID of this audio shortcode instance.
2189 $override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );
2190 if ( '' !== $override ) {
2196 $default_types = wp_get_audio_extensions();
2197 $defaults_atts = array(
2201 'preload' => 'none',
2202 'class' => 'wp-audio-shortcode',
2203 'style' => 'width: 100%; visibility: hidden;'
2205 foreach ( $default_types as $type ) {
2206 $defaults_atts[$type] = '';
2209 $atts = shortcode_atts( $defaults_atts, $attr, 'audio' );
2212 if ( ! empty( $atts['src'] ) ) {
2213 $type = wp_check_filetype( $atts['src'], wp_get_mime_types() );
2214 if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) {
2215 return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
2218 array_unshift( $default_types, 'src' );
2220 foreach ( $default_types as $ext ) {
2221 if ( ! empty( $atts[ $ext ] ) ) {
2222 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );
2223 if ( strtolower( $type['ext'] ) === $ext ) {
2231 $audios = get_attached_media( 'audio', $post_id );
2232 if ( empty( $audios ) ) {
2236 $audio = reset( $audios );
2237 $atts['src'] = wp_get_attachment_url( $audio->ID );
2238 if ( empty( $atts['src'] ) ) {
2242 array_unshift( $default_types, 'src' );
2246 * Filter the media library used for the audio shortcode.
2250 * @param string $library Media library used for the audio shortcode.
2252 $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' );
2253 if ( 'mediaelement' === $library && did_action( 'init' ) ) {
2254 wp_enqueue_style( 'wp-mediaelement' );
2255 wp_enqueue_script( 'wp-mediaelement' );
2259 * Filter the class attribute for the audio shortcode output container.
2263 * @param string $class CSS class or list of space-separated classes.
2265 $atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'] );
2268 'class' => $atts['class'],
2269 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ),
2270 'loop' => wp_validate_boolean( $atts['loop'] ),
2271 'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
2272 'preload' => $atts['preload'],
2273 'style' => $atts['style'],
2276 // These ones should just be omitted altogether if they are blank
2277 foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) {
2278 if ( empty( $html_atts[$a] ) ) {
2279 unset( $html_atts[$a] );
2283 $attr_strings = array();
2284 foreach ( $html_atts as $k => $v ) {
2285 $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
2289 if ( 'mediaelement' === $library && 1 === $instance ) {
2290 $html .= "<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->\n";
2292 $html .= sprintf( '<audio %s controls="controls">', join( ' ', $attr_strings ) );
2295 $source = '<source type="%s" src="%s" />';
2296 foreach ( $default_types as $fallback ) {
2297 if ( ! empty( $atts[ $fallback ] ) ) {
2298 if ( empty( $fileurl ) ) {
2299 $fileurl = $atts[ $fallback ];
2301 $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
2302 $url = add_query_arg( '_', $instance, $atts[ $fallback ] );
2303 $html .= sprintf( $source, $type['type'], esc_url( $url ) );
2307 if ( 'mediaelement' === $library ) {
2308 $html .= wp_mediaelement_fallback( $fileurl );
2310 $html .= '</audio>';
2313 * Filter the audio shortcode output.
2317 * @param string $html Audio shortcode HTML output.
2318 * @param array $atts Array of audio shortcode attributes.
2319 * @param string $audio Audio file.
2320 * @param int $post_id Post ID.
2321 * @param string $library Media library used for the audio shortcode.
2323 return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library );
2325 add_shortcode( 'audio', 'wp_audio_shortcode' );
2328 * Returns a filtered list of WP-supported video formats.
2332 * @return array List of supported video formats.
2334 function wp_get_video_extensions() {
2336 * Filter the list of supported video formats.
2340 * @param array $extensions An array of support video formats. Defaults are
2341 * 'mp4', 'm4v', 'webm', 'ogv', 'wmv', 'flv'.
2343 return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'wmv', 'flv' ) );
2347 * Builds the Video shortcode output.
2349 * This implements the functionality of the Video Shortcode for displaying
2350 * WordPress mp4s in a post.
2354 * @global int $content_width
2355 * @staticvar int $instance
2357 * @param array $attr {
2358 * Attributes of the shortcode.
2360 * @type string $src URL to the source of the video file. Default empty.
2361 * @type int $height Height of the video embed in pixels. Default 360.
2362 * @type int $width Width of the video embed in pixels. Default $content_width or 640.
2363 * @type string $poster The 'poster' attribute for the `<video>` element. Default empty.
2364 * @type string $loop The 'loop' attribute for the `<video>` element. Default empty.
2365 * @type string $autoplay The 'autoplay' attribute for the `<video>` element. Default empty.
2366 * @type string $preload The 'preload' attribute for the `<video>` element.
2367 * Default 'metadata'.
2368 * @type string $class The 'class' attribute for the `<video>` element.
2369 * Default 'wp-video-shortcode'.
2371 * @param string $content Shortcode content.
2372 * @return string|void HTML content to display video.
2374 function wp_video_shortcode( $attr, $content = '' ) {
2375 global $content_width;
2376 $post_id = get_post() ? get_the_ID() : 0;
2378 static $instance = 0;
2382 * Filter the default video shortcode output.
2384 * If the filtered output isn't empty, it will be used instead of generating
2385 * the default video template.
2389 * @see wp_video_shortcode()
2391 * @param string $html Empty variable to be replaced with shortcode markup.
2392 * @param array $attr Attributes of the video shortcode.
2393 * @param string $content Video shortcode content.
2394 * @param int $instance Unique numeric ID of this video shortcode instance.
2396 $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance );
2397 if ( '' !== $override ) {
2403 $default_types = wp_get_video_extensions();
2404 $defaults_atts = array(
2409 'preload' => 'metadata',
2412 'class' => 'wp-video-shortcode',
2415 foreach ( $default_types as $type ) {
2416 $defaults_atts[$type] = '';
2419 $atts = shortcode_atts( $defaults_atts, $attr, 'video' );
2422 // shrink the video so it isn't huge in the admin
2423 if ( $atts['width'] > $defaults_atts['width'] ) {
2424 $atts['height'] = round( ( $atts['height'] * $defaults_atts['width'] ) / $atts['width'] );
2425 $atts['width'] = $defaults_atts['width'];
2428 // if the video is bigger than the theme
2429 if ( ! empty( $content_width ) && $atts['width'] > $content_width ) {
2430 $atts['height'] = round( ( $atts['height'] * $content_width ) / $atts['width'] );
2431 $atts['width'] = $content_width;
2435 $is_vimeo = $is_youtube = false;
2436 $yt_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#';
2437 $vimeo_pattern = '#^https?://(.+\.)?vimeo\.com/.*#';
2440 if ( ! empty( $atts['src'] ) ) {
2441 $is_vimeo = ( preg_match( $vimeo_pattern, $atts['src'] ) );
2442 $is_youtube = ( preg_match( $yt_pattern, $atts['src'] ) );
2443 if ( ! $is_youtube && ! $is_vimeo ) {
2444 $type = wp_check_filetype( $atts['src'], wp_get_mime_types() );
2445 if ( ! in_array( strtolower( $type['ext'] ), $default_types ) ) {
2446 return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
2451 wp_enqueue_script( 'froogaloop' );
2455 array_unshift( $default_types, 'src' );
2457 foreach ( $default_types as $ext ) {
2458 if ( ! empty( $atts[ $ext ] ) ) {
2459 $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );
2460 if ( strtolower( $type['ext'] ) === $ext ) {
2468 $videos = get_attached_media( 'video', $post_id );
2469 if ( empty( $videos ) ) {
2473 $video = reset( $videos );
2474 $atts['src'] = wp_get_attachment_url( $video->ID );
2475 if ( empty( $atts['src'] ) ) {
2479 array_unshift( $default_types, 'src' );
2483 * Filter the media library used for the video shortcode.
2487 * @param string $library Media library used for the video shortcode.
2489 $library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' );
2490 if ( 'mediaelement' === $library && did_action( 'init' ) ) {
2491 wp_enqueue_style( 'wp-mediaelement' );
2492 wp_enqueue_script( 'wp-mediaelement' );
2496 * Filter the class attribute for the video shortcode output container.
2500 * @param string $class CSS class or list of space-separated classes.
2502 $atts['class'] = apply_filters( 'wp_video_shortcode_class', $atts['class'] );
2505 'class' => $atts['class'],
2506 'id' => sprintf( 'video-%d-%d', $post_id, $instance ),
2507 'width' => absint( $atts['width'] ),
2508 'height' => absint( $atts['height'] ),
2509 'poster' => esc_url( $atts['poster'] ),
2510 'loop' => wp_validate_boolean( $atts['loop'] ),
2511 'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
2512 'preload' => $atts['preload'],
2515 // These ones should just be omitted altogether if they are blank
2516 foreach ( array( 'poster', 'loop', 'autoplay', 'preload' ) as $a ) {
2517 if ( empty( $html_atts[$a] ) ) {
2518 unset( $html_atts[$a] );
2522 $attr_strings = array();
2523 foreach ( $html_atts as $k => $v ) {
2524 $attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
2528 if ( 'mediaelement' === $library && 1 === $instance ) {
2529 $html .= "<!--[if lt IE 9]><script>document.createElement('video');</script><![endif]-->\n";
2531 $html .= sprintf( '<video %s controls="controls">', join( ' ', $attr_strings ) );
2534 $source = '<source type="%s" src="%s" />';
2535 foreach ( $default_types as $fallback ) {
2536 if ( ! empty( $atts[ $fallback ] ) ) {
2537 if ( empty( $fileurl ) ) {
2538 $fileurl = $atts[ $fallback ];
2540 if ( 'src' === $fallback && $is_youtube ) {
2541 $type = array( 'type' => 'video/youtube' );
2542 } elseif ( 'src' === $fallback && $is_vimeo ) {
2543 $type = array( 'type' => 'video/vimeo' );
2545 $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
2547 $url = add_query_arg( '_', $instance, $atts[ $fallback ] );
2548 $html .= sprintf( $source, $type['type'], esc_url( $url ) );
2552 if ( ! empty( $content ) ) {
2553 if ( false !== strpos( $content, "\n" ) ) {
2554 $content = str_replace( array( "\r\n", "\n", "\t" ), '', $content );
2556 $html .= trim( $content );
2559 if ( 'mediaelement' === $library ) {
2560 $html .= wp_mediaelement_fallback( $fileurl );
2562 $html .= '</video>';
2565 if ( ! empty( $atts['width'] ) ) {
2566 $width_rule = sprintf( 'width: %dpx; ', $atts['width'] );
2568 $output = sprintf( '<div style="%s" class="wp-video">%s</div>', $width_rule, $html );
2571 * Filter the output of the video shortcode.
2575 * @param string $output Video shortcode HTML output.
2576 * @param array $atts Array of video shortcode attributes.
2577 * @param string $video Video file.
2578 * @param int $post_id Post ID.
2579 * @param string $library Media library used for the video shortcode.
2581 return apply_filters( 'wp_video_shortcode', $output, $atts, $video, $post_id, $library );
2583 add_shortcode( 'video', 'wp_video_shortcode' );
2586 * Displays previous image link that has the same post parent.
2590 * @see adjacent_image_link()
2592 * @param string|array $size Optional. Image size. Accepts any valid image size, an array of width and
2593 * height values in pixels (in that order), 0, or 'none'. 0 or 'none' will
2594 * default to 'post_title' or `$text`. Default 'thumbnail'.
2595 * @param string $text Optional. Link text. Default false.
2597 function previous_image_link( $size = 'thumbnail', $text = false ) {
2598 adjacent_image_link(true, $size, $text);
2602 * Displays next image link that has the same post parent.
2606 * @see adjacent_image_link()
2608 * @param string|array $size Optional. Image size. Accepts any valid image size, an array of width and
2609 * height values in pixels (in that order), 0, or 'none'. 0 or 'none' will
2610 * default to 'post_title' or `$text`. Default 'thumbnail'.
2611 * @param string $text Optional. Link text. Default false.
2613 function next_image_link( $size = 'thumbnail', $text = false ) {
2614 adjacent_image_link(false, $size, $text);
2618 * Displays next or previous image link that has the same post parent.
2620 * Retrieves the current attachment object from the $post global.
2624 * @param bool $prev Optional. Whether to display the next (false) or previous (true) link. Default true.
2625 * @param string|array $size Optional. Image size. Accepts any valid image size, or an array of width and height
2626 * values in pixels (in that order). Default 'thumbnail'.
2627 * @param bool $text Optional. Link text. Default false.
2629 function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) {
2631 $attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ) );
2633 foreach ( $attachments as $k => $attachment ) {
2634 if ( $attachment->ID == $post->ID ) {
2642 if ( $attachments ) {
2643 $k = $prev ? $k - 1 : $k + 1;
2645 if ( isset( $attachments[ $k ] ) ) {
2646 $attachment_id = $attachments[ $k ]->ID;
2647 $output = wp_get_attachment_link( $attachment_id, $size, true, false, $text );
2651 $adjacent = $prev ? 'previous' : 'next';
2654 * Filter the adjacent image link.
2656 * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency,
2657 * either 'next', or 'previous'.
2661 * @param string $output Adjacent image HTML markup.
2662 * @param int $attachment_id Attachment ID
2663 * @param string $size Image size.
2664 * @param string $text Link text.
2666 echo apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text );
2670 * Retrieves taxonomies attached to given the attachment.
2674 * @param int|array|object $attachment Attachment ID, data array, or data object.
2675 * @return array Empty array on failure. List of taxonomies on success.
2677 function get_attachment_taxonomies( $attachment ) {
2678 if ( is_int( $attachment ) ) {
2679 $attachment = get_post( $attachment );
2680 } elseif ( is_array( $attachment ) ) {
2681 $attachment = (object) $attachment;
2683 if ( ! is_object($attachment) )
2686 $file = get_attached_file( $attachment->ID );
2687 $filename = basename( $file );
2689 $objects = array('attachment');
2691 if ( false !== strpos($filename, '.') )
2692 $objects[] = 'attachment:' . substr($filename, strrpos($filename, '.') + 1);
2693 if ( !empty($attachment->post_mime_type) ) {
2694 $objects[] = 'attachment:' . $attachment->post_mime_type;
2695 if ( false !== strpos($attachment->post_mime_type, '/') )
2696 foreach ( explode('/', $attachment->post_mime_type) as $token )
2697 if ( !empty($token) )
2698 $objects[] = "attachment:$token";
2701 $taxonomies = array();
2702 foreach ( $objects as $object )
2703 if ( $taxes = get_object_taxonomies($object) )
2704 $taxonomies = array_merge($taxonomies, $taxes);
2706 return array_unique($taxonomies);
2710 * Retrieves all of the taxonomy names that are registered for attachments.
2712 * Handles mime-type-specific taxonomies such as attachment:image and attachment:video.
2716 * @see get_taxonomies()
2718 * @param string $output Optional. The type of taxonomy output to return. Accepts 'names' or 'objects'.
2720 * @return array The names of all taxonomy of $object_type.
2722 function get_taxonomies_for_attachments( $output = 'names' ) {
2723 $taxonomies = array();
2724 foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) {
2725 foreach ( $taxonomy->object_type as $object_type ) {
2726 if ( 'attachment' == $object_type || 0 === strpos( $object_type, 'attachment:' ) ) {
2727 if ( 'names' == $output )
2728 $taxonomies[] = $taxonomy->name;
2730 $taxonomies[ $taxonomy->name ] = $taxonomy;
2740 * Create new GD image resource with transparency support
2742 * @todo: Deprecate if possible.
2746 * @param int $width Image width in pixels.
2747 * @param int $height Image height in pixels..
2748 * @return resource The GD image resource.
2750 function wp_imagecreatetruecolor($width, $height) {
2751 $img = imagecreatetruecolor($width, $height);
2752 if ( is_resource($img) && function_exists('imagealphablending') && function_exists('imagesavealpha') ) {
2753 imagealphablending($img, false);
2754 imagesavealpha($img, true);
2760 * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height.
2764 * @see wp_constrain_dimensions()
2766 * @param int $example_width The width of an example embed.
2767 * @param int $example_height The height of an example embed.
2768 * @param int $max_width The maximum allowed width.
2769 * @param int $max_height The maximum allowed height.
2770 * @return array The maximum possible width and height based on the example ratio.
2772 function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) {
2773 $example_width = (int) $example_width;
2774 $example_height = (int) $example_height;
2775 $max_width = (int) $max_width;
2776 $max_height = (int) $max_height;
2778 return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height );
2782 * Converts a shorthand byte value to an integer byte value.
2786 * @param string $size A shorthand byte value.
2787 * @return int An integer byte value.
2789 function wp_convert_hr_to_bytes( $size ) {
2790 $size = strtolower( $size );
2791 $bytes = (int) $size;
2792 if ( strpos( $size, 'k' ) !== false )
2793 $bytes = intval( $size ) * KB_IN_BYTES;
2794 elseif ( strpos( $size, 'm' ) !== false )
2795 $bytes = intval($size) * MB_IN_BYTES;
2796 elseif ( strpos( $size, 'g' ) !== false )
2797 $bytes = intval( $size ) * GB_IN_BYTES;
2802 * Determines the maximum upload size allowed in php.ini.
2806 * @return int Allowed upload size.
2808 function wp_max_upload_size() {
2809 $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) );
2810 $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) );
2813 * Filter the maximum upload size allowed in php.ini.
2817 * @param int $size Max upload size limit in bytes.
2818 * @param int $u_bytes Maximum upload filesize in bytes.
2819 * @param int $p_bytes Maximum size of POST data in bytes.
2821 return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes );
2825 * Returns a WP_Image_Editor instance and loads file into it.
2829 * @param string $path Path to the file to load.
2830 * @param array $args Optional. Additional arguments for retrieving the image editor.
2831 * Default empty array.
2832 * @return WP_Image_Editor|WP_Error The WP_Image_Editor object if successful, an WP_Error
2835 function wp_get_image_editor( $path, $args = array() ) {
2836 $args['path'] = $path;
2838 if ( ! isset( $args['mime_type'] ) ) {
2839 $file_info = wp_check_filetype( $args['path'] );
2841 // If $file_info['type'] is false, then we let the editor attempt to
2842 // figure out the file type, rather than forcing a failure based on extension.
2843 if ( isset( $file_info ) && $file_info['type'] )
2844 $args['mime_type'] = $file_info['type'];
2847 $implementation = _wp_image_editor_choose( $args );
2849 if ( $implementation ) {
2850 $editor = new $implementation( $path );
2851 $loaded = $editor->load();
2853 if ( is_wp_error( $loaded ) )
2859 return new WP_Error( 'image_no_editor', __('No editor could be selected.') );
2863 * Tests whether there is an editor that supports a given mime type or methods.
2867 * @param string|array $args Optional. Array of arguments to retrieve the image editor supports.
2868 * Default empty array.
2869 * @return bool True if an eligible editor is found; false otherwise.
2871 function wp_image_editor_supports( $args = array() ) {
2872 return (bool) _wp_image_editor_choose( $args );
2876 * Tests which editors are capable of supporting the request.
2881 * @param array $args Optional. Array of arguments for choosing a capable editor. Default empty array.
2882 * @return string|false Class name for the first editor that claims to support the request. False if no
2883 * editor claims to support the request.
2885 function _wp_image_editor_choose( $args = array() ) {
2886 require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
2887 require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';
2888 require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
2891 * Filter the list of image editing library classes.
2895 * @param array $image_editors List of available image editors. Defaults are
2896 * 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'.
2898 $implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) );
2900 foreach ( $implementations as $implementation ) {
2901 if ( ! call_user_func( array( $implementation, 'test' ), $args ) )
2904 if ( isset( $args['mime_type'] ) &&
2906 array( $implementation, 'supports_mime_type' ),
2907 $args['mime_type'] ) ) {
2911 if ( isset( $args['methods'] ) &&
2912 array_diff( $args['methods'], get_class_methods( $implementation ) ) ) {
2916 return $implementation;
2923 * Prints default plupload arguments.
2927 function wp_plupload_default_settings() {
2928 $wp_scripts = wp_scripts();
2930 $data = $wp_scripts->get_data( 'wp-plupload', 'data' );
2931 if ( $data && false !== strpos( $data, '_wpPluploadSettings' ) )
2934 $max_upload_size = wp_max_upload_size();
2937 'runtimes' => 'html5,flash,silverlight,html4',
2938 'file_data_name' => 'async-upload', // key passed to $_FILE.
2939 'url' => admin_url( 'async-upload.php', 'relative' ),
2940 'flash_swf_url' => includes_url( 'js/plupload/plupload.flash.swf' ),
2941 'silverlight_xap_url' => includes_url( 'js/plupload/plupload.silverlight.xap' ),
2943 'max_file_size' => $max_upload_size . 'b',
2947 // Currently only iOS Safari supports multiple files uploading but iOS 7.x has a bug that prevents uploading of videos
2948 // when enabled. See #29602.
2949 if ( wp_is_mobile() && strpos( $_SERVER['HTTP_USER_AGENT'], 'OS 7_' ) !== false &&
2950 strpos( $_SERVER['HTTP_USER_AGENT'], 'like Mac OS X' ) !== false ) {
2952 $defaults['multi_selection'] = false;
2956 * Filter the Plupload default settings.
2960 * @param array $defaults Default Plupload settings array.
2962 $defaults = apply_filters( 'plupload_default_settings', $defaults );
2965 'action' => 'upload-attachment',
2969 * Filter the Plupload default parameters.
2973 * @param array $params Default Plupload parameters array.
2975 $params = apply_filters( 'plupload_default_params', $params );
2976 $params['_wpnonce'] = wp_create_nonce( 'media-form' );
2977 $defaults['multipart_params'] = $params;
2980 'defaults' => $defaults,
2982 'mobile' => wp_is_mobile(),
2983 'supported' => _device_can_upload(),
2985 'limitExceeded' => is_multisite() && ! is_upload_space_available()
2988 $script = 'var _wpPluploadSettings = ' . wp_json_encode( $settings ) . ';';
2991 $script = "$data\n$script";
2993 $wp_scripts->add_data( 'wp-plupload', 'data', $script );
2997 * Prepares an attachment post object for JS, where it is expected
2998 * to be JSON-encoded and fit into an Attachment model.
3002 * @param mixed $attachment Attachment ID or object.
3003 * @return array|void Array of attachment details.
3005 function wp_prepare_attachment_for_js( $attachment ) {
3006 if ( ! $attachment = get_post( $attachment ) )
3009 if ( 'attachment' != $attachment->post_type )
3012 $meta = wp_get_attachment_metadata( $attachment->ID );
3013 if ( false !== strpos( $attachment->post_mime_type, '/' ) )
3014 list( $type, $subtype ) = explode( '/', $attachment->post_mime_type );
3016 list( $type, $subtype ) = array( $attachment->post_mime_type, '' );
3018 $attachment_url = wp_get_attachment_url( $attachment->ID );
3021 'id' => $attachment->ID,
3022 'title' => $attachment->post_title,
3023 'filename' => wp_basename( get_attached_file( $attachment->ID ) ),
3024 'url' => $attachment_url,
3025 'link' => get_attachment_link( $attachment->ID ),
3026 'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
3027 'author' => $attachment->post_author,
3028 'description' => $attachment->post_content,
3029 'caption' => $attachment->post_excerpt,
3030 'name' => $attachment->post_name,
3031 'status' => $attachment->post_status,
3032 'uploadedTo' => $attachment->post_parent,
3033 'date' => strtotime( $attachment->post_date_gmt ) * 1000,
3034 'modified' => strtotime( $attachment->post_modified_gmt ) * 1000,
3035 'menuOrder' => $attachment->menu_order,
3036 'mime' => $attachment->post_mime_type,
3038 'subtype' => $subtype,
3039 'icon' => wp_mime_type_icon( $attachment->ID ),
3040 'dateFormatted' => mysql2date( __( 'F j, Y' ), $attachment->post_date ),
3046 'editLink' => false,
3050 $author = new WP_User( $attachment->post_author );
3051 $response['authorName'] = $author->display_name;
3053 if ( $attachment->post_parent ) {
3054 $post_parent = get_post( $attachment->post_parent );
3056 $post_parent = false;
3059 if ( $post_parent ) {
3060 $parent_type = get_post_type_object( $post_parent->post_type );
3061 if ( $parent_type && $parent_type->show_ui && current_user_can( 'edit_post', $attachment->post_parent ) ) {
3062 $response['uploadedToLink'] = get_edit_post_link( $attachment->post_parent, 'raw' );
3064 $response['uploadedToTitle'] = $post_parent->post_title ? $post_parent->post_title : __( '(no title)' );
3067 $attached_file = get_attached_file( $attachment->ID );
3069 if ( isset( $meta['filesize'] ) ) {
3070 $bytes = $meta['filesize'];
3071 } elseif ( file_exists( $attached_file ) ) {
3072 $bytes = filesize( $attached_file );
3078 $response['filesizeInBytes'] = $bytes;
3079 $response['filesizeHumanReadable'] = size_format( $bytes );
3082 if ( current_user_can( 'edit_post', $attachment->ID ) ) {
3083 $response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID );
3084 $response['nonces']['edit'] = wp_create_nonce( 'image_editor-' . $attachment->ID );
3085 $response['editLink'] = get_edit_post_link( $attachment->ID, 'raw' );
3088 if ( current_user_can( 'delete_post', $attachment->ID ) )
3089 $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID );
3091 if ( $meta && 'image' === $type ) {
3094 /** This filter is documented in wp-admin/includes/media.php */
3095 $possible_sizes = apply_filters( 'image_size_names_choose', array(
3096 'thumbnail' => __('Thumbnail'),
3097 'medium' => __('Medium'),
3098 'large' => __('Large'),
3099 'full' => __('Full Size'),
3101 unset( $possible_sizes['full'] );
3103 // Loop through all potential sizes that may be chosen. Try to do this with some efficiency.
3104 // First: run the image_downsize filter. If it returns something, we can use its data.
3105 // If the filter does not return something, then image_downsize() is just an expensive
3106 // way to check the image metadata, which we do second.
3107 foreach ( $possible_sizes as $size => $label ) {
3109 /** This filter is documented in wp-includes/media.php */
3110 if ( $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ) ) {
3111 if ( ! $downsize[3] )
3113 $sizes[ $size ] = array(
3114 'height' => $downsize[2],
3115 'width' => $downsize[1],
3116 'url' => $downsize[0],
3117 'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape',
3119 } elseif ( isset( $meta['sizes'][ $size ] ) ) {
3120 if ( ! isset( $base_url ) )
3121 $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url );
3123 // Nothing from the filter, so consult image metadata if we have it.
3124 $size_meta = $meta['sizes'][ $size ];
3126 // We have the actual image size, but might need to further constrain it if content_width is narrower.
3127 // Thumbnail, medium, and full sizes are also checked against the site's height/width options.
3128 list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' );
3130 $sizes[ $size ] = array(
3131 'height' => $height,
3133 'url' => $base_url . $size_meta['file'],
3134 'orientation' => $height > $width ? 'portrait' : 'landscape',
3139 $sizes['full'] = array( 'url' => $attachment_url );
3141 if ( isset( $meta['height'], $meta['width'] ) ) {
3142 $sizes['full']['height'] = $meta['height'];
3143 $sizes['full']['width'] = $meta['width'];
3144 $sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape';
3147 $response = array_merge( $response, array( 'sizes' => $sizes ), $sizes['full'] );
3148 } elseif ( $meta && 'video' === $type ) {
3149 if ( isset( $meta['width'] ) )
3150 $response['width'] = (int) $meta['width'];
3151 if ( isset( $meta['height'] ) )
3152 $response['height'] = (int) $meta['height'];
3155 if ( $meta && ( 'audio' === $type || 'video' === $type ) ) {
3156 if ( isset( $meta['length_formatted'] ) )
3157 $response['fileLength'] = $meta['length_formatted'];
3159 $response['meta'] = array();
3160 foreach ( wp_get_attachment_id3_keys( $attachment, 'js' ) as $key => $label ) {
3161 $response['meta'][ $key ] = false;
3163 if ( ! empty( $meta[ $key ] ) ) {
3164 $response['meta'][ $key ] = $meta[ $key ];
3168 $id = get_post_thumbnail_id( $attachment->ID );
3169 if ( ! empty( $id ) ) {
3170 list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' );
3171 $response['image'] = compact( 'src', 'width', 'height' );
3172 list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' );
3173 $response['thumb'] = compact( 'src', 'width', 'height' );
3175 $src = wp_mime_type_icon( $attachment->ID );
3178 $response['image'] = compact( 'src', 'width', 'height' );
3179 $response['thumb'] = compact( 'src', 'width', 'height' );
3183 if ( function_exists('get_compat_media_markup') )
3184 $response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) );
3187 * Filter the attachment data prepared for JavaScript.
3191 * @param array $response Array of prepared attachment data.
3192 * @param int|object $attachment Attachment ID or object.
3193 * @param array $meta Array of attachment meta data.
3195 return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta );
3199 * Enqueues all scripts, styles, settings, and templates necessary to use
3200 * all media JS APIs.
3204 * @global int $content_width
3205 * @global wpdb $wpdb
3206 * @global WP_Locale $wp_locale
3208 * @param array $args {
3209 * Arguments for enqueuing media scripts.
3211 * @type int|WP_Post A post object or ID.
3214 function wp_enqueue_media( $args = array() ) {
3215 // Enqueue me just once per page, please.
3216 if ( did_action( 'wp_enqueue_media' ) )
3219 global $content_width, $wpdb, $wp_locale;
3224 $args = wp_parse_args( $args, $defaults );
3226 // We're going to pass the old thickbox media tabs to `media_upload_tabs`
3227 // to ensure plugins will work. We will then unset those tabs.
3229 // handler action suffix => tab label
3236 /** This filter is documented in wp-admin/includes/media.php */
3237 $tabs = apply_filters( 'media_upload_tabs', $tabs );
3238 unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] );
3241 'link' => get_option( 'image_default_link_type' ), // db default is 'file'
3242 'align' => get_option( 'image_default_align' ), // empty default
3243 'size' => get_option( 'image_default_size' ), // empty default
3246 $exts = array_merge( wp_get_audio_extensions(), wp_get_video_extensions() );
3247 $mimes = get_allowed_mime_types();
3248 $ext_mimes = array();
3249 foreach ( $exts as $ext ) {
3250 foreach ( $mimes as $ext_preg => $mime_match ) {
3251 if ( preg_match( '#' . $ext . '#i', $ext_preg ) ) {
3252 $ext_mimes[ $ext ] = $mime_match;
3258 $has_audio = $wpdb->get_var( "
3261 WHERE post_type = 'attachment'
3262 AND post_mime_type LIKE 'audio%'
3265 $has_video = $wpdb->get_var( "
3268 WHERE post_type = 'attachment'
3269 AND post_mime_type LIKE 'video%'
3272 $months = $wpdb->get_results( $wpdb->prepare( "
3273 SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
3275 WHERE post_type = %s
3276 ORDER BY post_date DESC
3277 ", 'attachment' ) );
3278 foreach ( $months as $month_year ) {
3279 $month_year->text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $month_year->month ), $month_year->year );
3284 'tabUrl' => add_query_arg( array( 'chromeless' => true ), admin_url('media-upload.php') ),
3285 'mimeTypes' => wp_list_pluck( get_post_mime_types(), 0 ),
3286 /** This filter is documented in wp-admin/includes/media.php */
3287 'captions' => ! apply_filters( 'disable_captions', '' ),
3289 'sendToEditor' => wp_create_nonce( 'media-send-to-editor' ),
3294 'defaultProps' => $props,
3295 'attachmentCounts' => array(
3296 'audio' => ( $has_audio ) ? 1 : 0,
3297 'video' => ( $has_video ) ? 1 : 0
3299 'embedExts' => $exts,
3300 'embedMimes' => $ext_mimes,
3301 'contentWidth' => $content_width,
3302 'months' => $months,
3303 'mediaTrash' => MEDIA_TRASH ? 1 : 0
3307 if ( isset( $args['post'] ) ) {
3308 $post = get_post( $args['post'] );
3309 $settings['post'] = array(
3311 'nonce' => wp_create_nonce( 'update-post_' . $post->ID ),
3314 $thumbnail_support = current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' );
3315 if ( ! $thumbnail_support && 'attachment' === $post->post_type && $post->post_mime_type ) {
3316 if ( wp_attachment_is( 'audio', $post ) ) {
3317 $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
3318 } elseif ( wp_attachment_is( 'video', $post ) ) {
3319 $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
3323 if ( $thumbnail_support ) {
3324 $featured_image_id = get_post_meta( $post->ID, '_thumbnail_id', true );
3325 $settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1;
3330 $post_type_object = get_post_type_object( $post->post_type );
3332 $post_type_object = get_post_type_object( 'post' );
3337 'url' => __( 'URL' ),
3338 'addMedia' => __( 'Add Media' ),
3339 'search' => __( 'Search' ),
3340 'select' => __( 'Select' ),
3341 'cancel' => __( 'Cancel' ),
3342 'update' => __( 'Update' ),
3343 'replace' => __( 'Replace' ),
3344 'remove' => __( 'Remove' ),
3345 'back' => __( 'Back' ),
3346 /* translators: This is a would-be plural string used in the media manager.
3347 If there is not a word you can use in your language to avoid issues with the
3348 lack of plural support here, turn it into "selected: %d" then translate it.
3350 'selected' => __( '%d selected' ),
3351 'dragInfo' => __( 'Drag and drop to reorder media files.' ),
3354 'uploadFilesTitle' => __( 'Upload Files' ),
3355 'uploadImagesTitle' => __( 'Upload Images' ),
3358 'mediaLibraryTitle' => __( 'Media Library' ),
3359 'insertMediaTitle' => __( 'Insert Media' ),
3360 'createNewGallery' => __( 'Create a new gallery' ),
3361 'createNewPlaylist' => __( 'Create a new playlist' ),
3362 'createNewVideoPlaylist' => __( 'Create a new video playlist' ),
3363 'returnToLibrary' => __( '← Return to library' ),
3364 'allMediaItems' => __( 'All media items' ),
3365 'allDates' => __( 'All dates' ),
3366 'noItemsFound' => __( 'No items found.' ),
3367 'insertIntoPost' => $post_type_object->labels->insert_into_item,
3368 'unattached' => __( 'Unattached' ),
3369 'trash' => _x( 'Trash', 'noun' ),
3370 'uploadedToThisPost' => $post_type_object->labels->uploaded_to_this_item,
3371 'warnDelete' => __( "You are about to permanently delete this item.\n 'Cancel' to stop, 'OK' to delete." ),
3372 'warnBulkDelete' => __( "You are about to permanently delete these items.\n 'Cancel' to stop, 'OK' to delete." ),
3373 'warnBulkTrash' => __( "You are about to trash these items.\n 'Cancel' to stop, 'OK' to delete." ),
3374 'bulkSelect' => __( 'Bulk Select' ),
3375 'cancelSelection' => __( 'Cancel Selection' ),
3376 'trashSelected' => __( 'Trash Selected' ),
3377 'untrashSelected' => __( 'Untrash Selected' ),
3378 'deleteSelected' => __( 'Delete Selected' ),
3379 'deletePermanently' => __( 'Delete Permanently' ),
3380 'apply' => __( 'Apply' ),
3381 'filterByDate' => __( 'Filter by date' ),
3382 'filterByType' => __( 'Filter by type' ),
3383 'searchMediaLabel' => __( 'Search Media' ),
3384 'noMedia' => __( 'No media files found.' ),
3387 'attachmentDetails' => __( 'Attachment Details' ),
3390 'insertFromUrlTitle' => __( 'Insert from URL' ),
3393 'setFeaturedImageTitle' => $post_type_object->labels->featured_image,
3394 'setFeaturedImage' => $post_type_object->labels->set_featured_image,
3397 'createGalleryTitle' => __( 'Create Gallery' ),
3398 'editGalleryTitle' => __( 'Edit Gallery' ),
3399 'cancelGalleryTitle' => __( '← Cancel Gallery' ),
3400 'insertGallery' => __( 'Insert gallery' ),
3401 'updateGallery' => __( 'Update gallery' ),
3402 'addToGallery' => __( 'Add to gallery' ),
3403 'addToGalleryTitle' => __( 'Add to Gallery' ),
3404 'reverseOrder' => __( 'Reverse order' ),
3407 'imageDetailsTitle' => __( 'Image Details' ),
3408 'imageReplaceTitle' => __( 'Replace Image' ),
3409 'imageDetailsCancel' => __( 'Cancel Edit' ),
3410 'editImage' => __( 'Edit Image' ),
3413 'chooseImage' => __( 'Choose Image' ),
3414 'selectAndCrop' => __( 'Select and Crop' ),
3415 'skipCropping' => __( 'Skip Cropping' ),
3416 'cropImage' => __( 'Crop Image' ),
3417 'cropYourImage' => __( 'Crop your image' ),
3418 'cropping' => __( 'Cropping…' ),
3419 'suggestedDimensions' => __( 'Suggested image dimensions:' ),
3420 'cropError' => __( 'There has been an error cropping your image.' ),
3423 'audioDetailsTitle' => __( 'Audio Details' ),
3424 'audioReplaceTitle' => __( 'Replace Audio' ),
3425 'audioAddSourceTitle' => __( 'Add Audio Source' ),
3426 'audioDetailsCancel' => __( 'Cancel Edit' ),
3429 'videoDetailsTitle' => __( 'Video Details' ),
3430 'videoReplaceTitle' => __( 'Replace Video' ),
3431 'videoAddSourceTitle' => __( 'Add Video Source' ),
3432 'videoDetailsCancel' => __( 'Cancel Edit' ),
3433 'videoSelectPosterImageTitle' => __( 'Select Poster Image' ),
3434 'videoAddTrackTitle' => __( 'Add Subtitles' ),
3437 'playlistDragInfo' => __( 'Drag and drop to reorder tracks.' ),
3438 'createPlaylistTitle' => __( 'Create Audio Playlist' ),
3439 'editPlaylistTitle' => __( 'Edit Audio Playlist' ),
3440 'cancelPlaylistTitle' => __( '← Cancel Audio Playlist' ),
3441 'insertPlaylist' => __( 'Insert audio playlist' ),
3442 'updatePlaylist' => __( 'Update audio playlist' ),
3443 'addToPlaylist' => __( 'Add to audio playlist' ),
3444 'addToPlaylistTitle' => __( 'Add to Audio Playlist' ),
3447 'videoPlaylistDragInfo' => __( 'Drag and drop to reorder videos.' ),
3448 'createVideoPlaylistTitle' => __( 'Create Video Playlist' ),
3449 'editVideoPlaylistTitle' => __( 'Edit Video Playlist' ),
3450 'cancelVideoPlaylistTitle' => __( '← Cancel Video Playlist' ),
3451 'insertVideoPlaylist' => __( 'Insert video playlist' ),
3452 'updateVideoPlaylist' => __( 'Update video playlist' ),
3453 'addToVideoPlaylist' => __( 'Add to video playlist' ),
3454 'addToVideoPlaylistTitle' => __( 'Add to Video Playlist' ),
3458 * Filter the media view settings.
3462 * @param array $settings List of media view settings.
3463 * @param WP_Post $post Post object.
3465 $settings = apply_filters( 'media_view_settings', $settings, $post );
3468 * Filter the media view strings.
3472 * @param array $strings List of media view strings.
3473 * @param WP_Post $post Post object.
3475 $strings = apply_filters( 'media_view_strings', $strings, $post );
3477 $strings['settings'] = $settings;
3479 // Ensure we enqueue media-editor first, that way media-views is
3480 // registered internally before we try to localize it. see #24724.
3481 wp_enqueue_script( 'media-editor' );
3482 wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings );
3484 wp_enqueue_script( 'media-audiovideo' );
3485 wp_enqueue_style( 'media-views' );
3487 wp_enqueue_script( 'mce-view' );
3488 wp_enqueue_script( 'image-edit' );
3490 wp_enqueue_style( 'imgareaselect' );
3491 wp_plupload_default_settings();
3493 require_once ABSPATH . WPINC . '/media-template.php';
3494 add_action( 'admin_footer', 'wp_print_media_templates' );
3495 add_action( 'wp_footer', 'wp_print_media_templates' );
3496 add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' );
3499 * Fires at the conclusion of wp_enqueue_media().
3503 do_action( 'wp_enqueue_media' );
3507 * Retrieves media attached to the passed post.
3511 * @param string $type Mime type.
3512 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
3513 * @return array Found attachments.
3515 function get_attached_media( $type, $post = 0 ) {
3516 if ( ! $post = get_post( $post ) )
3520 'post_parent' => $post->ID,
3521 'post_type' => 'attachment',
3522 'post_mime_type' => $type,
3523 'posts_per_page' => -1,
3524 'orderby' => 'menu_order',
3529 * Filter arguments used to retrieve media attached to the given post.
3533 * @param array $args Post query arguments.
3534 * @param string $type Mime type of the desired media.
3535 * @param mixed $post Post ID or object.
3537 $args = apply_filters( 'get_attached_media_args', $args, $type, $post );
3539 $children = get_children( $args );
3542 * Filter the list of media attached to the given post.
3546 * @param array $children Associative array of media attached to the given post.
3547 * @param string $type Mime type of the media desired.
3548 * @param mixed $post Post ID or object.
3550 return (array) apply_filters( 'get_attached_media', $children, $type, $post );
3554 * Check the content blob for an audio, video, object, embed, or iframe tags.
3558 * @param string $content A string which might contain media data.
3559 * @param array $types An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
3560 * @return array A list of found HTML media embeds.
3562 function get_media_embedded_in_content( $content, $types = null ) {
3566 * Filter the embedded media types that are allowed to be returned from the content blob.
3570 * @param array $allowed_media_types An array of allowed media types. Default media types are
3571 * 'audio', 'video', 'object', 'embed', and 'iframe'.
3573 $allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) );
3575 if ( ! empty( $types ) ) {
3576 if ( ! is_array( $types ) ) {
3577 $types = array( $types );
3580 $allowed_media_types = array_intersect( $allowed_media_types, $types );
3583 $tags = implode( '|', $allowed_media_types );
3585 if ( preg_match_all( '#<(?P<tag>' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches ) ) {
3586 foreach ( $matches[0] as $match ) {
3595 * Retrieves galleries from the passed post's content.
3599 * @param int|WP_Post $post Post ID or object.
3600 * @param bool $html Optional. Whether to return HTML or data in the array. Default true.
3601 * @return array A list of arrays, each containing gallery data and srcs parsed
3602 * from the expanded shortcode.
3604 function get_post_galleries( $post, $html = true ) {
3605 if ( ! $post = get_post( $post ) )
3608 if ( ! has_shortcode( $post->post_content, 'gallery' ) )
3611 $galleries = array();
3612 if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) {
3613 foreach ( $matches as $shortcode ) {
3614 if ( 'gallery' === $shortcode[2] ) {
3617 $gallery = do_shortcode_tag( $shortcode );
3619 $galleries[] = $gallery;
3621 preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER );
3622 if ( ! empty( $src ) ) {
3623 foreach ( $src as $s )
3627 $data = shortcode_parse_atts( $shortcode[3] );
3628 $data['src'] = array_values( array_unique( $srcs ) );
3629 $galleries[] = $data;
3636 * Filter the list of all found galleries in the given post.
3640 * @param array $galleries Associative array of all found post galleries.
3641 * @param WP_Post $post Post object.
3643 return apply_filters( 'get_post_galleries', $galleries, $post );
3647 * Check a specified post's content for gallery and, if present, return the first
3651 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
3652 * @param bool $html Optional. Whether to return HTML or data. Default is true.
3653 * @return string|array Gallery data and srcs parsed from the expanded shortcode.
3655 function get_post_gallery( $post = 0, $html = true ) {
3656 $galleries = get_post_galleries( $post, $html );
3657 $gallery = reset( $galleries );
3660 * Filter the first-found post gallery.
3664 * @param array $gallery The first-found post gallery.
3665 * @param int|WP_Post $post Post ID or object.
3666 * @param array $galleries Associative array of all found post galleries.
3668 return apply_filters( 'get_post_gallery', $gallery, $post, $galleries );
3672 * Retrieve the image srcs from galleries from a post's content, if present
3676 * @see get_post_galleries()
3678 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
3679 * @return array A list of lists, each containing image srcs parsed.
3680 * from an expanded shortcode
3682 function get_post_galleries_images( $post = 0 ) {
3683 $galleries = get_post_galleries( $post, false );
3684 return wp_list_pluck( $galleries, 'src' );
3688 * Checks a post's content for galleries and return the image srcs for the first found gallery
3692 * @see get_post_gallery()
3694 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
3695 * @return array A list of a gallery's image srcs in order.
3697 function get_post_gallery_images( $post = 0 ) {
3698 $gallery = get_post_gallery( $post, false );
3699 return empty( $gallery['src'] ) ? array() : $gallery['src'];
3703 * Maybe attempts to generate attachment metadata, if missing.
3707 * @param WP_Post $attachment Attachment object.
3709 function wp_maybe_generate_attachment_metadata( $attachment ) {
3710 if ( empty( $attachment ) || ( empty( $attachment->ID ) || ! $attachment_id = (int) $attachment->ID ) ) {
3714 $file = get_attached_file( $attachment_id );
3715 $meta = wp_get_attachment_metadata( $attachment_id );
3716 if ( empty( $meta ) && file_exists( $file ) ) {
3717 $_meta = get_post_meta( $attachment_id );
3718 $regeneration_lock = 'wp_generating_att_' . $attachment_id;
3719 if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $regeneration_lock ) ) {
3720 set_transient( $regeneration_lock, $file );
3721 wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
3722 delete_transient( $regeneration_lock );
3728 * Tries to convert an attachment URL into a post ID.
3732 * @global wpdb $wpdb WordPress database abstraction object.
3734 * @param string $url The URL to resolve.
3735 * @return int The found post ID, or 0 on failure.
3737 function attachment_url_to_postid( $url ) {
3740 $dir = wp_get_upload_dir();
3743 $site_url = parse_url( $dir['url'] );
3744 $image_path = parse_url( $path );
3746 //force the protocols to match if needed
3747 if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) {
3748 $path = str_replace( $image_path['scheme'], $site_url['scheme'], $path );
3751 if ( 0 === strpos( $path, $dir['baseurl'] . '/' ) ) {
3752 $path = substr( $path, strlen( $dir['baseurl'] . '/' ) );
3755 $sql = $wpdb->prepare(
3756 "SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s",
3759 $post_id = $wpdb->get_var( $sql );
3762 * Filter an attachment id found by URL.
3766 * @param int|null $post_id The post_id (if any) found by the function.
3767 * @param string $url The URL being looked up.
3769 return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url );
3773 * Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view.
3777 * @global string $wp_version
3779 * @return array The relevant CSS file URLs.
3781 function wpview_media_sandbox_styles() {
3782 $version = 'ver=' . $GLOBALS['wp_version'];
3783 $mediaelement = includes_url( "js/mediaelement/mediaelementplayer.min.css?$version" );
3784 $wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" );
3786 return array( $mediaelement, $wpmediaelement );