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Source View: jpeg_quality

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
255
256 function wp_save_image_file($filename, $image, $mime_type, $post_id) {
257      $image = apply_filters('image_save_pre', $image, $post_id);
258      $saved = apply_filters('wp_save_image_file', null, $filename, $image, $mime_type, $post_id);
259      if ( null !== $saved )
260           return $saved;
261
262      switch ( $mime_type ) {
263           case 'image/jpeg':
264                return imagejpeg( $image, $filename, apply_filters( 'jpeg_quality', 90, 'edit_image' ) );
265           case 'image/png':
266                return imagepng($image, $filename);
267           case 'image/gif':
268                return imagegif($image, $filename);
269           default:
270                return false;
271      }
272 }
273