<?php

   // URL to get
   $urlStr = htmlspecialchars($_GET['url'], ENT_QUOTES);
   // Referer URL to use
   $refURL = htmlspecialchars($_GET['ref'], ENT_QUOTES);
   // User agent to pass
   $uaStr = $_SERVER['HTTP_USER_AGENT'];
   // Do we want the headers?
   $sDispHeader = $_GET['hd'];
   // *************************************
   // Only grab if there's anything to grab
   // *************************************
   if(!empty($urlStr)){
      // Get the contents
      $curl = curl_init();
      curl_setopt($curl, CURLOPT_URL, $urlStr);
      curl_setopt($curl, CURLOPT_VERBOSE, 1);
      curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
      if($sDispHeader==''){curl_setopt($curl, CURLOPT_HEADER, 1);}else{curl_setopt($curl, CURLOPT_HEADER, 0);}
      curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
      curl_setopt($curl, CURLOPT_REFERER, $refURL);
      curl_setopt($curl, CURLOPT_USERAGENT, $uaStr);
      $return = curl_exec($curl);
      $info = curl_getinfo($curl);
      // ********************************************************************************
      // If the server is uncontactable or returns any HTTP status code other than 200 OK
      // ********************************************************************************
      if ($return === false || $info['http_code'] != 200) {
         $return = "No cURL data returned for $urlStr [". $info['http_code']. "]<br><br>DATA: ".$return;
         if (curl_error($curl)){
            $return .= "\n". curl_error($curl);
         }
      }
      @curl_close($curl);
      print $return;
   }else{
      echo 'No URL specified';
   }
?>

http://yourwebsite.com/{url_to_script}/?url=http://somewebsite.com&ref=http://somereferer.com

http://yourwebsite.com/{url_to_script}/?url=[URL]&ref=[REF]