Check IPs

gistfile1.aw

<?php
/**
* First, we declare an array of domains to check. Each array is for a domain that we want to check, and the port that we want to check.
* The third value is how long fsockopen should wait before timing out.
*/
$ports = array (
     array('192.168.0.1', 80, 1,'Router'),
     array('192.168.0.7', 90, 1,'Self'),
     array('www.yahoo.com', 80, 1,'google'),
     array('www.sitethatdoesnotexist.com', 80, 1,'nothing')
);

/**
* Now we loop through the array and check each domain
*/

foreach ($ports as $port) {

/**
* fsockopen takes as arguments the domain name, the port, a variable to hold the error number and error string if an error should occur, and finally the timeout value.
*/

     $fp = @fsockopen($port[0], $port[1], $errno, $errstr, $port[2]);

/**
* If the resource returned by fsockopen is not set, then we report that the site is down and not taking connections
*/

     if (!$fp) {
          echo "{$port[3]} ({$port[0]}) is down: $errstr ($errno)<br />\n";

/**
* Otherwise we report that the site is up
*/

     } else {
          echo "{$port[3]} ({$port[0]}) is up<br/>\n";
     }
}
?>