Wordpress function.php include function

functions.php

<?php
if ( ! function_exists( 'get_function_files' ) ) {
	function get_function_files($path){
		$function_files = glob($folder.$path, GLOB_BRACE);
		foreach($function_files as $function_file){
			if (substr($function_file, -8) != '-off.php'){
				require_once($function_file);	
			}
		}
	}
}

get_function_files(dirname(__FILE__).'/functions/*.{php}');
get_function_files(dirname(__FILE__).'/functions/*/*.{php}');