Source View: wp_get_attachment_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
1433      $post_id = (int) $post_id;
1434      if ( !$post =& get_post( $post_id ) )
1435           return false;
1436
1437      $url = get_the_guid( $post->ID );
1438
1439      if ( 'attachment' != $post->post_type || !$url )
1440           return false;
1441
1442      return apply_filters( 'wp_get_attachment_url', $url, $post->ID );
1443 }
1444
1445 function wp_get_attachment_thumb_file( $post_id = 0 ) {
1446      $post_id = (int) $post_id;
1447      if ( !$post =& get_post( $post_id ) )
1448           return false;
1449      if ( !$imagedata = wp_get_attachment_metadata( $post->ID ) )
1450           return false;
1451