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
3403
3404      clean_post_cache($post_ID);
3405
3406      if ( isset($post_parent) && $post_parent < 0 )
3407           add_post_meta($post_ID, '_wp_attachment_temp_parent', $post_parent, true);
3408
3409      if ( $update) {
3410           do_action('edit_attachment', $post_ID);
3411      } else {
3412           do_action('add_attachment', $post_ID);
3413      }
3414
3415      return $post_ID;
3416 }
3417
3418 /**
3419  * Trashes or deletes an attachment.
3420  *
3421  * When an attachment is permanently deleted, the file will also be removed.