Source View: wp_get_attachment_url

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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
2695           }
2696      }
2697
2698      if ( empty($url) ) //If any of the above options failed, Fallback on the GUID as used pre-2.7, not recomended to rely upon this.
2699           $url = get_the_guid( $post->ID );
2700
2701      if ( 'attachment' != $post->post_type || empty($url) )
2702           return false;
2703
2704      return apply_filters( 'wp_get_attachment_url', $url, $post->ID );
2705 }
2706
2707 /**
2708  * Retrieve thumbnail for an attachment.
2709  *
2710  * @since 2.1.0
2711  *
2712  * @param int $post_id Attachment ID.
2713  * @return mixed False on failure. Thumbnail file path on success.