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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.

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
1053                          if ( is_null( $parent ) ) {
1054                               break;
1055                          }
1056
1057                          $this->current_level++;
1058                          $find_main_page = (int) $parent->post_parent;
1059
1060                          if ( ! isset( $parent_name ) ) {
1061                               /** This filter is documented in wp-includes/post-template.php */
1062                               $parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID );
1063                          }
1064                     }
1065                }
1066           }
1067
1068           $can_edit_post = current_user_can( 'edit_post', $post->ID );
1069
1070           if ( $can_edit_post && 'trash' !== $post->post_status ) {
1071                $lock_holder = wp_check_post_lock( $post->ID );