Source View: add_attachment

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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
339
340      if ( $file )
341           add_post_meta($post_ID, '_wp_attached_file', $file);
342
343      clean_post_cache($post_ID);
344
345      if ( $update) {
346           do_action('edit_attachment', $post_ID);
347      } else {
348           do_action('add_attachment', $post_ID);
349      }
350      
351      return $post_ID;
352 }
353
354 function wp_delete_attachment($postid) {
355      global $wpdb;
356      $postid = (int) $postid;
357