Http Method

• Requests use http-post-form encoding application/x-www-form-urlencoded
• Responses use JSON encoding application/json

sample code

function md5_sign($data,$key){
    ksort($data);
    $string = http_build_query($data);
    $string = urldecode($string); 
    $string=trim($string) . "&key=" . $key;
    return strtoupper(md5($string));
}

function http_post($url, $data = null){
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        if (!empty($data)) {
            curl_setopt($ch, CURLOPT_POST, 1);
            $data = http_build_query($data);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_DEFAULT);
        curl_setopt($ch, CURLOPT_TIMEOUT, 120);
        $outPut = curl_exec($ch);
        $aStatus = curl_getinfo($ch);
        curl_close($ch);
        if (intval($aStatus['http_code']) != 200) {
            return "http code from server is not 200"
        }
        return $outPut;
}


$url = "...";
$params = [
    "order_sn"=>time(),
    "app_id"=>"..."
];
		

$sign = md5_sign($params); // see previous page
$payload['sign'] = $sign;
$res = http_post($url, $payload);
$res = json_decode($res, true);