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
5356
5357      /**
5358       * Filters the attachment URL.
5359       *
5360       * @since 2.1.0
5361       *
5362       * @param string $url           URL for the given attachment.
5363       * @param int    $attachment_id Attachment post ID.
5364       */
5365      $url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
5366
5367      if ( empty( $url ) )
5368           return false;
5369
5370      return $url;
5371 }
5372
5373 /**
5374  * Retrieves the caption for an attachment.