redirect_guess_404_permalink()

尝试根据查询变量猜测正确的URL

原型

redirect_guess_404_permalink()

返回值

(false|string)  找到一个正确的URL。失败时是假的。

源文件

路径：wp-includes/canonical.php

<?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;
}
...
?>

其他

英文文档：https://developer.wordpress.org/reference/functions/redirect_guess_404_permalink/