[WordPress]カスタム投稿ごとにsearch.phpを分離する

functions.php

function enable_post_type_search_template($template){
    if ( is_search() ) {
        $post_types = get_query_var('post_type');
         
        foreach ( (array) $post_types as $post_type )
            $templates[] = "search-{$post_type}.php";
        $templates[] = 'search.php';
     
        $template = get_query_template('search',$templates);
    }
    return $template;
}
add_filter('template_include','enable_post_type_search_template');