WP::handle_404()
Set the Headers for 404, if nothing is found for requested URL.
Issue a 404 if a request doesn't match any posts and doesn't match any object (e.g. an existing-but-empty category, tag, author) and a 404 was not already issued, and if the request was not a search or the homepage.
Otherwise, issue a 200.
This sets headers after posts have been queried. handle_404() really means "handle status". By inspecting the result of querying posts, seemingly successful requests can be switched to a 404 so that canonical redirection logic can kick in.
Метод класса: WP{}
Хуки из метода
Возвращает
null
. Ничего (null).
Использование
global $wp; $wp->handle_404();
Заметки
- Global. WP_Query. $wp_query WordPress Query object.
Список изменений
С версии 2.0.0 | Введена. |
Код WP::handle_404() WP::handle 404 WP 6.6.2
public function handle_404() { global $wp_query; /** * Filters whether to short-circuit default header status handling. * * Returning a non-false value from the filter will short-circuit the handling * and return early. * * @since 4.5.0 * * @param bool $preempt Whether to short-circuit default header status handling. Default false. * @param WP_Query $wp_query WordPress Query object. */ if ( false !== apply_filters( 'pre_handle_404', false, $wp_query ) ) { return; } // If we've already issued a 404, bail. if ( is_404() ) { return; } $set_404 = true; // Never 404 for the admin, robots, or favicon. if ( is_admin() || is_robots() || is_favicon() ) { $set_404 = false; // If posts were found, check for paged content. } elseif ( $wp_query->posts ) { $content_found = true; if ( is_singular() ) { $post = isset( $wp_query->post ) ? $wp_query->post : null; $next = '<!--nextpage-->'; // Check for paged content that exceeds the max number of pages. if ( $post && ! empty( $this->query_vars['page'] ) ) { // Check if content is actually intended to be paged. if ( str_contains( $post->post_content, $next ) ) { $page = trim( $this->query_vars['page'], '/' ); $content_found = (int) $page <= ( substr_count( $post->post_content, $next ) + 1 ); } else { $content_found = false; } } } // The posts page does not support the <!--nextpage--> pagination. if ( $wp_query->is_posts_page && ! empty( $this->query_vars['page'] ) ) { $content_found = false; } if ( $content_found ) { $set_404 = false; } // We will 404 for paged queries, as no posts were found. } elseif ( ! is_paged() ) { $author = get_query_var( 'author' ); // Don't 404 for authors without posts as long as they matched an author on this site. if ( is_author() && is_numeric( $author ) && $author > 0 && is_user_member_of_blog( $author ) // Don't 404 for these queries if they matched an object. || ( is_tag() || is_category() || is_tax() || is_post_type_archive() ) && get_queried_object() // Don't 404 for these queries either. || is_home() || is_search() || is_feed() ) { $set_404 = false; } } if ( $set_404 ) { // Guess it's time to 404. $wp_query->set_404(); status_header( 404 ); nocache_headers(); } else { status_header( 200 ); } }