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do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 189 | * down-sizing the image, returning that value as output instead. |
| 190 | * |
| 191 | * @since 2.5.0 |
| 192 | * |
| 193 | * @param bool $downsize Whether to short-circuit the image downsize. Default false. |
| 194 | * @param int $id Attachment ID for image. |
| 195 | * @param array|string $size Size of image. Image size or array of width and height values (in that order). |
| 196 | * Default 'medium'. |
| 197 | */ |
| 198 | if ( $out = apply_filters( 'image_downsize', false, $id, $size ) ) { |
| 199 | return $out; |
| 200 | } |
| 201 | |
| 202 | $img_url = wp_get_attachment_url( $id ); |
| 203 | $meta = wp_get_attachment_metadata( $id ); |
| 204 | $width = $height = 0; |
| 205 | $is_intermediate = false; |
| 206 | $img_url_basename = wp_basename( $img_url ); |
| 207 | |
| Line | Code |
| 3310 | unset( $possible_sizes['full'] ); |
| 3311 | |
| 3312 | // Loop through all potential sizes that may be chosen. Try to do this with some efficiency. |
| 3313 | // First: run the image_downsize filter. If it returns something, we can use its data. |
| 3314 | // If the filter does not return something, then image_downsize() is just an expensive |
| 3315 | // way to check the image metadata, which we do second. |
| 3316 | foreach ( $possible_sizes as $size => $label ) { |
| 3317 | |
| 3318 | /** This filter is documented in wp-includes/media.php */ |
| 3319 | if ( $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ) ) { |
| 3320 | if ( empty( $downsize[3] ) ) { |
| 3321 | continue; |
| 3322 | } |
| 3323 | |
| 3324 | $sizes[ $size ] = array( |
| 3325 | 'height' => $downsize[2], |
| 3326 | 'width' => $downsize[1], |
| 3327 | 'url' => $downsize[0], |
| 3328 | 'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape', |