$phonefound = false;

function whirlphone($stuff)
{
	global $phonefound;

	$out = hash('whirlpool', $stuff);
	$offset = 0;
	
	again:
	$pos = strpos($out, '78', $offset);
	if ($pos !== false && !$phonefound)
	{
		$phone = substr($out, $pos, 8);
		if (ctype_digit($phone) && strlen($phone) == 8)
		{
			$phonefound = true;
			echo 'Possible phone: ' . $phone . "\n";
			echo 'preout: ' . $out . "\n";
			$out = substr($out, 0, $pos) . substr($out, $pos + 8);
			echo 'aftout: ' . $out . "\n";
			return $out;
		}
		else
		{
			$offset = $pos + 2;
			goto again;
		}
	}

	return $out;
}

$start = whirlphone($start . '+alice');

for ($i = 1; $i <= 50; $i++)
{
	$start = whirlphone($start);
}