/**
* Ping a address
* @return int if -1 the server is down
* @access public
*/
static function ping($address)
{
$urlInfo = parse_url($address);
$domain = $urlInfo['host'];
$port = Net::getUrlPort($urlInfo);
$starttime = microtime(true);
$file = @fsockopen($domain, $port, $errno, $errstr, 10);
$stoptime = microtime(true);
$status = 0;
if (!$file) {
$status = -1;
} else {
fclose($file);
$status = ($stoptime - $starttime) * 1000;
$status = floor($status);
}
return $status;
}
