Simple PHP Website Status Check and Report

gistfile1.txt

<?php
$failed=true;
if($site=file_get_contents('http://google.com')){
	if(preg_match('/google/', $site)) $failed=false;
  # Maybe your sites online but has an error..
	# if(preg_match('/Something went wrong/', $site)) $failed=true;
}
if($failed)	mail('you @ tld.com', 'Site OFFLINE', 'WTF dude!');