<?php

class Api
{
    //Nomor merchant
    private $mch_id = 10085;
    //APIKEY merchant
    private $mch_key = 'slrkogmvo13hb92d8i5111bxm8q8euc7';

    //Membuat tanda tangan (sign)
    private function sign($data, $Md5key)
    {
        ksort($data);
        $md5str = "";
        foreach ($data as $key => $val) {
            if (!empty($val)) {
                $md5str = $md5str . $key . "=" . $val . "&";
            }
        }
        return strtoupper(md5($md5str . "key=" . $Md5key));
    }

    //Request CURL
    protected function curl($url, $data = [], $method = 'POST')
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $method);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_FAILONERROR, false);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_HEADER, false);
        if (1 == strpos("$" . $url, "https://")) {
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        }
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        $res = curl_exec($curl);
        if (curl_errno($curl)) {
            return 'ERROR_200' . curl_error($curl);
        }
        curl_close($curl);
        return $res;
    }

    //Request pay-in
    public function ds()
    {
        $param = [
            "memberId"    => $this->mch_id,
            "type"        => 'bank',
            "orderId"     => 'E2021090512312314',
            "dstCode"    => 'PERMATA',
            "amount"      => 50000,
            "dateTime"    => date("Y-m-d H:i:s"),
            "name"        => 'xinmiti',
            "phone"       => '088291448849',
            "email"       => 'gotocode@gmail.com',
            "notifyUrl"   => 'http://www.yourdomain.com/demo/notifyurl.php'
        ];
        $param["sign"] = $this->sign($param, $this->mch_key);
        return $this->curl('http://pay.xxxxxx.com/Pay_Index.html', $param);
    }
}

//Instansiasi request
$api = new Api();
$res = $api->ds();
echo print_r($res);