İzlesene Video İndirici PHP

<center>
<img src="https://www.teakolik.com/wp-content/uploads/2011/08/izlesene-logo.jpg"><br>
<h1>İzlesene Video İndirici</h1>
<form method="post" >
İzlesene url: <input type="text" name="link">
<input type="submit" value="indir"><br><br><b> Açılan sayfada videonun sağ altında bulunan indir ikonuna tıklayınız.</center>
</form>
<?php
if($_POST)
{
	
 function siteConnect($site)
 {

  $ch = curl_init();
  $hc = "YahooSeeker-Testing/v3.9 (compatible; Mozilla 4.0; MSIE 5.5; Yahoo! Search - Web Search)";
  curl_setopt($ch, CURLOPT_REFERER, 'http://www.google.com');
  curl_setopt($ch, CURLOPT_URL, $site);
  curl_setopt($ch, CURLOPT_USERAGENT, $hc);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $site = curl_exec($ch);
  curl_close($ch);
  

  preg_match_all('@istr.izlesene.com(.*?).twitterurl@si',$site,$veri);
 
        
 $link = rtrim($veri[0][0],'","twitterurl');
  return $link;
  
 }
 
 
 $giris = siteConnect($_POST["link"]);
  header ("Location: http://".$giris.""); 

}
?>