redirect_guess_404_permalink
Attempts to guess the correct URL based on query vars.
Description
(false|string) redirect_guess_404_permalink();
Returns (false|string)
The correct URL if one is found. False on failure.
Usage
if ( !function_exists( 'redirect_guess_404_permalink' ) ) { require_once ABSPATH . WPINC . '/canonical.php'; } // NOTICE! Understand what this does before running. $result = redirect_guess_404_permalink();
Defined (1)
The function is defined in the following location(s).
- /wp-includes/canonical.php
- function redirect_guess_404_permalink() {
- global $wpdb;
- if ( get_query_var('name') ) {
- $where = $wpdb->prepare("post_name LIKE %s", $wpdb->esc_like( get_query_var('name') ) . '%');
- // if any of post_type, year, monthnum, or day are set, use them to refine the query
- if ( get_query_var('post_type') )
- $where .= $wpdb->prepare(" AND post_type = %s", get_query_var('post_type'));
- else
- $where .= " AND post_type IN ('" . implode( "', '", get_post_types( array( 'public' => true ) ) ) . "')";
- if ( get_query_var('year') )
- $where .= $wpdb->prepare(" AND YEAR(post_date) = %d", get_query_var('year'));
- if ( get_query_var('monthnum') )
- $where .= $wpdb->prepare(" AND MONTH(post_date) = %d", get_query_var('monthnum'));
- if ( get_query_var('day') )
- $where .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", get_query_var('day'));
- $post_id = $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE $where AND post_status = 'publish'");
- if ( ! $post_id )
- return false;
- if ( get_query_var( 'feed' ) )
- return get_post_comments_feed_link( $post_id, get_query_var( 'feed' ) );
- elseif ( get_query_var( 'page' ) && 1 < get_query_var( 'page' ) )
- return trailingslashit( get_permalink( $post_id ) ) . user_trailingslashit( get_query_var( 'page' ), 'single_paged' );
- else
- return get_permalink( $post_id );
- }
- return false;
- }