function post($postdata,$server){    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $server);    curl_setopt($ch, CURLOPT_HEADER, 0);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    curl_setopt($ch, CURLOPT_POST, 80);    curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);    $data = curl_exec($ch);    curl_close($ch);    return $data;}