PHP CURL - uscita vuoto con nessun errore

Question

Non ricevo l'uscita ricciolo per URL valido, campione $ url = http://linkedin.com/pub/4/b29/8a0

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL,   "$url"); 
curl_setopt($ch, CURLOPT_TIMEOUT,  60); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); 

$referer = WebCrawl::getRandomURL(); 
curl_setopt($ch, CURLOPT_REFERER,  $referer); 
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,false); 
curl_setopt($ch, CURLOPT_COOKIEJAR,  "cookie.txt"); 

curl_setopt($ch, CURLOPT_USERAGENT,  "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"); 

$body = curl_exec($ch); 
$error_no = curl_errno($ch); 

Answer 1

function getURL($url){ 
     $ch = curl_init(); 
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
     curl_setopt($ch, CURLOPT_HEADER, 0); 
     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); 
     curl_setopt($ch, CURLOPT_URL, $url); 
     $tmp = curl_exec($ch); 
     curl_close($ch); 
     if ($tmp != false){ 
      return $tmp; 
     } 
    }