Readable Random String

function readable_random_string($length = 6){
	$conso = array("b","c","d","f","g","h","j","k","l","m","n","p","q","r","s","t","v","w","x","y","z");
	$vocal = array("a","e","i","o","u");
	
	$password = "";
	$rand = ((double)microtime()*1000000);
	$max = $length / 2;
	
	for($i=1; $i<=$max; $i++){
		$password .= $conso[rand(0,19)];
		$password .= $vocal[rand(0,4)];
	}
	
	return $password;
}