WordPress 搜索结果中只有1个文章时自动跳到该文章方法

    add_action('template_redirect', 'redirect_single_post'); 
   
    function redirect_single_post() {     if (is_search()) {         
    global $wp_query;         
     
    if ($wp_query->post_count == 1 && $wp_query->max_num_pages == 1) { 
    wp_redirect( get_permalink( $wp_query->posts['0']->ID ) ); 
    exit;         }     } }