Lame hack solution

<?
$text = 'wallpost-'.md5(`cat /etc/hostname`);
switch($text) {
  case 'a':
    echo "A\n";
    break;
  case 'b':
    echo "B\n";
    break;
  case preg_match('/^wallpost-([0-9a-f]+)$/', $text, $what)?$text:'':
    echo "{$text}\n";
    var_dump($what);
    break;
  case 'd':
    echo "D\n";
    break;
  default:
    echo "NO";
    break;
}
?>

I'm a bit appalled that this solution actually works. BRB shower