Buyrun Bu Şekilde Kullanabilirsiniz;

<?php

function verial($url)
{
	if (!extension_loaded(curl)){die("Extension yuklu degil socket deneyebilirsin");}
	$ch = curl_init();
	if (!$ch) { die ("Curl oturumu baslatamadim.."); }
	curl_setopt($ch, CURLOPT_URL,$url); 
	curl_setopt($ch, CURLOPT_POST, 0);
	curl_setopt($ch, CURLOPT_HEADER, 1);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3");
	curl_setopt($ch, CURLOPT_REFERER, "http://www.google.com");
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$data = curl_exec($ch); 
	curl_close($ch);  
   return $data;
}

$x = verial($yaz["site"]); 
if($x){echo "Aktif";}else{echo "İnAktif";}  

?>
Hayırlı Günler.