$RandomTxt1 = 	md5 ( uniqid () ) .
				sha1 ( time() );

$RandomTxt2 = 	strtoupper (
				sha1 ( uniqid() ) .
				md5 ( rand() ) .
				sha1 ( time() ) .
				md5 ( mt_rand() ) .
				sha1 ( md5 ( $RandomTxt1 ) )
				);

$GenerateCode =
	@date("Ymd") .
	substr(
		str_shuffle(
			$RandomTxt1 . $RandomTxt2
		)
		, 0,20) .
	uniqid();