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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
256
257 function wp_save_image_file($filename, $image, $mime_type, $post_id) {
258      $image = apply_filters('image_save_pre', $image, $post_id);
259      $saved = apply_filters('wp_save_image_file', null, $filename, $image, $mime_type, $post_id);
260      if ( null !== $saved )
261           return $saved;
262
263      switch ( $mime_type ) {
264           case 'image/jpeg':
265                return imagejpeg( $image, $filename, apply_filters( 'jpeg_quality', 90, 'edit_image' ) );
266           case 'image/png':
267                return imagepng($image, $filename);
268           case 'image/gif':
269                return imagegif($image, $filename);
270           default:
271                return false;
272      }
273 }
274