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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )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.
| Line | Code |
|---|---|
| 718 | |
| 719 | if ( 'trash' === get_post_status( $menu_item->object_id ) ) { |
| 720 | $menu_item->_invalid = true; |
| 721 | } |
| 722 | |
| 723 | $menu_item->url = get_permalink( $menu_item->object_id ); |
| 724 | |
| 725 | $original_object = get_post( $menu_item->object_id ); |
| 726 | /** This filter is documented in wp-includes/post-template.php */ |
| 727 | $original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID ); |
| 728 | |
| 729 | if ( '' === $original_title ) { |
| 730 | /* translators: %d: ID of a post */ |
| 731 | $original_title = sprintf( __( '#%d (no title)' ), $original_object->ID ); |
| 732 | } |
| 733 | |
| 734 | $menu_item->title = '' == $menu_item->post_title ? $original_title : $menu_item->post_title; |
| 735 | |
| 736 | } elseif ( 'post_type_archive' == $menu_item->type ) { |