ping.php

<?php
// This script is run every 5 minutes
// A ping failure will generate an email
// We ping critical servers that serve to identify both a server failure and/or a circuit or VPN failure.

// Define descriptions and ip addresses below to test on
$hosts = array(
array("description" => "Google.com",      "hostip" => "www.google.com"),
array("description" => "Office1",      "hostip" => "192.168.1.2")
    );

// Setup the email parameters and the ping count (one should suffice)
$mailto = "you@yourdomain.com";
$mailfrom = "you@yourdomain.com";
$pingcount =2;

// Loop on each host and ping it
// check the return code from exec via status.  
// cmdoutput holds the full ping result as an array but we don't really need it.
foreach ($hosts as $host){
	$description = $host["description"];
	$hostip = $host["hostip"];
	unset($cmdoutput);
	exec("ping -n $pingcount $hostip", $cmdoutput, $status);
	$finalout = "";
	foreach ($cmdoutput as $value) {
			$finalout = $finalout.$value."\n";
			}
	echo $finalout;
	
	if($status == 0){
		echo("<BR>$description ($hostip) is Up<BR>");
		}
	else {
		// echo("$description ($hostip) is Down<br>");
		mail($mailto,"Network Issue with $description!",$finalout,"From: $mailfrom");
    		}
	}

?>