PHP CURL

 private function curl($url, $data, $json=true)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_URL, $url);
        if ($json && is_array($data)) {
            $data = json_encode($data, JSON_UNESCAPED_UNICODE|JSON_UNESCAPED_SLASHES);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_NOSIGNAL, 1);    //注意，毫秒超时一定要设置这个
        curl_setopt($ch, CURLOPT_TIMEOUT_MS, 2500);  //超时毫秒，cURL 7.16.2中被加入。从PHP 5.2.3起可使用

        if ($json) {
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json; charset=utf-8','Content-Length:'.strlen($data)));
        }
        $relt = curl_exec($ch);
        curl_close($ch);
        return $relt;
    }