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Source View: image_downsize

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Source View

This hook occurs 2 times in this file.

Line Code
198       * down-sizing the image, returning that value instead.
199       *
200       * @since 2.5.0
201       *
202       * @param bool|array   $downsize Whether to short-circuit the image downsize.
203       * @param int          $id       Attachment ID for image.
204       * @param string|int[] $size     Requested image size. Can be any registered image size name, or
205       *                               an array of width and height values in pixels (in that order).
206       */
207      $out = apply_filters( 'image_downsize', false, $id, $size );
208
209      if ( $out ) {
210           return $out;
211      }
212
213      $img_url          = wp_get_attachment_url( $id );
214      $meta             = wp_get_attachment_metadata( $id );
215      $width            = 0;
216      $height           = 0;
 
Line Code
4110           /*
4111            * Loop through all potential sizes that may be chosen. Try to do this with some efficiency.
4112            * First: run the image_downsize filter. If it returns something, we can use its data.
4113            * If the filter does not return something, then image_downsize() is just an expensive way
4114            * to check the image metadata, which we do second.
4115            */
4116           foreach ( $possible_sizes as $size => $label ) {
4117
4118                /** This filter is documented in wp-includes/media.php */
4119                $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size );
4120
4121                if ( $downsize ) {
4122                     if ( empty( $downsize[3] ) ) {
4123                          continue;
4124                     }
4125
4126                     $sizes[ $size ] = array(
4127                          'height'      => $downsize[2],
4128                          'width'       => $downsize[1],