php 用 http post方法传输数据

private function http_post($url,$post,$timeout){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_POST, 1);
        curl_setopt($curl, CURLOPT_POSTFIELDS, $post);
        curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        $code  = curl_getinfo($curl, CURLINFO_HTTP_CODE);
        $errMsg= curl_multi_getcontent($curl);
        curl_close($curl);

        if($code != 200) {
            $arrRet = array(
                'code'    => 1,
                'err_msg' => $code,
                'data'    => $errMsg,
            );
            return $arrRet;
        }

        $arrRet = array(
            'code'    => 0,
            'err_msg' => $code,
            'data'    => json_decode($output,true),
        );
        return $arrRet;
    }

$ret = self::http_post('url', $arrInput, 2);