Source View: wp_get_attachment_thumb_url

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

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

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
1515           return false;
1516      if ( !$url = wp_get_attachment_url( $post->ID ) )
1517           return false;
1518
1519      if ( !$thumb = wp_get_attachment_thumb_file( $post->ID ) )
1520           return false;
1521
1522      $url = str_replace(basename($url), basename($thumb), $url);
1523
1524      return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
1525 }
1526
1527 function wp_attachment_is_image( $post_id = 0 ) {
1528      $post_id = (int) $post_id;
1529      if ( !$post =& get_post( $post_id ) )
1530           return false;
1531
1532      if ( !$file = get_attached_file( $post->ID ) )
1533           return false;