function hanzi($str){	if (preg_match("/^[\x{4e00}-\x{9fa5}]+$/u",$str)) {	return true;	}	return false;}function shouji($str){	if (preg_match("/^1[3,5,8]{1}[0-9]{9}$/", $str)) {	return true;	}	return false;}function hanzizimu($str){	if (preg_match("/^[\x{4e00}-\x{9fa5}A-Za-z0-9_]+$/u", $str)) {	return true;	}	return false;}