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
4949
4950      /**
4951       * Filter the attachment URL.
4952       *
4953       * @since 2.1.0
4954       *
4955       * @param string $url     URL for the given attachment.
4956       * @param int    $post_id Attachment ID.
4957       */
4958      $url = apply_filters( 'wp_get_attachment_url', $url, $post->ID );
4959
4960      if ( empty( $url ) )
4961           return false;
4962
4963      return $url;
4964 }
4965
4966 /**
4967  * Retrieve thumbnail for an attachment.