Spamhaus checker

spamhaus.php

<?php

$linode = array('server-name' => '1.2.3.4');
$rackspace = array('server-name' => '1.2.3.4');

foreach (array('linode' => $linode, 'rackspace' => $rackspace) as $stack => $servers) {
    foreach ($servers as $server => $ip) {
      $data = file_get_contents(sprintf('http://www.spamhaus.org/query/ip/%s', $ip));

      echo sprintf('%s (%s) - %s', $server, $stack, $ip), PHP_EOL;

      if (!strpos($data, sprintf('%s is listed in the', $ip))) {
        echo 'yay!';
      } else {
        echo 'boooo!';
      }

      echo PHP_EOL, '--', PHP_EOL;
    }
}