callback.php

<?php

require_once('variables.php');

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $response = $_POST;
}

if ($_SERVER['REQUEST_METHOD'] === 'GET') {
    $response = $_GET;
}

if (empty($response['status']) || empty($response['id']) || empty($response['track_id']) || empty($response['order_id'])) {
    return FALSE;
}

if ($response['status'] != 10) {
    print idpay_payment_get_message($response['status']);
}

$inquiry = idpay_payment_get_inquiry($response);

if ($inquiry) {
    $verify = idpay_payment_verify($response);
}

/*
 * @param array $response
 * @return bool
*/

function idpay_payment_get_inquiry($response)
{
    $header = array(
        'Content-Type: application/json',
        'X-API-KEY:' . APIKEY,
        'X-SANDBOX:' . SANDBOX,
    );

    $params = array(
        'id' => $response['id'],
        'order_id' => $response['order_id'],
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, URL_INQUIRY);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

    $result = curl_exec($ch);
    curl_close($ch);

    $result = json_decode($result);

    if (empty($result) || empty($result->status)) {
        print 'Exception message:';
        print '<pre>';
        print_r($result);
        print '</pre>';
        return FALSE;
    }

    if ($result->status == 10) {
        return TRUE;
    }

    print idpay_payment_get_message($result->status);

    return FALSE;
}


/*
 * @param array $response
 * @return bool
*/

function idpay_payment_verify($response)
{
    $header = array(
        'Content-Type: application/json',
        'X-API-KEY:' . APIKEY,
        'X-SANDBOX:' . SANDBOX,
    );

    $params = array(
        'id' => $response['id'],
        'order_id' => $response['order_id'],
    );

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, URL_VERIFY);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

    $result = curl_exec($ch);
    curl_close($ch);

    $result = json_decode($result);

    if (empty($result) || empty($result->status)) {
        print 'Exception message:';
        print '<pre>';
        print_r($result);
        print '</pre>';
        return FALSE;
    }

    print idpay_payment_get_message($result->status);
    print '<pre>';
    print_r($result);
    print '</pre>';
}

/*
 * @param int $status
 * @return string
*/
function idpay_payment_get_message($status)
{
    switch ($status) {
        case 1:
            return 'پرداخت انجام نشده است';

        case 2:
            return 'پرداخت ناموفق بوده است';

        case 3:
            return 'خطا رخ داده است';

        case 10:
            return 'در انتظار تایید پرداخت';

        case 100:
            return 'پرداخت تایید شده است';

        case 101:
            return 'پرداخت قبلاً تایید شده است';

        default:
            return 'Error ';
    }
}