<?php
/*
host_resolve.php

10.12.2010 created.
Script to check if hosts are resolving to the correct ip address.
Dumps results to file for stats later.
This is quick and messy :)

Example out:

10-12-2010 18:18:00|posterous.com|1.2.3.4|1 # means good resolve
10-12-2010 18:18:01|wikipedia.com|1.2.3.4|0 # means bad resolve (matches pacnames.com)
__
10.14.2010 revision

Added google.com to sites checked.
Adapted script to use an array of bad hosts instead of just one bad host.
*/

date_default_timezone_set('America/Los_Angeles');

$badhosts = array();
$badhosts[] = '208.70.79.51'; // pacnames.com
//$badhosts[] = '69.147.125.65'; // domdex.com? (yahoo.com)
$badhosts[] = '74.125.19.103'; // domdex.com? (google.com)
$badhosts[] = '64.95.64.197';  // (google.com) (cnn.com)

$hosts = array();
$hosts[] = 'posterous.com';
$hosts[] = 'wikipedia.org';
$hosts[] = 'yahoo.com';
$hosts[] = 'cnn.com';
$hosts[] = 'google.com';
$hosts[] = 'delicious.com';

while (1) {
   foreach ( $hosts as $host ) {
      $ip = gethostbyname($host);
      echo date('m-d-Y H:i:s') . "|";
      echo "$host|$ip|";
      if ( in_array($ip, $badhosts) ) { echo "0"; } else { echo "1"; }
      echo "\n";
   }

  sleep(60);
}

exit;
?>