mp_ipn.php

<?php
/**
 * Created by PhpStorm.
 * User: Ricardo
 * Date: 27/03/2018
 * Time: 19:46
 */

// Include Mercadopago library
require_once "config/config.php";
require_once "vendor/autoload.php";

// Create an instance with your MercadoPago credentials (CLIENT_ID and CLIENT_SECRET):
// Argentina: https://www.mercadopago.com/mla/herramientas/aplicaciones
// Brasil: https://www.mercadopago.com/mlb/ferramentas/aplicacoes
// Mexico: https://www.mercadopago.com/mlm/herramientas/aplicaciones
// Venezuela: https://www.mercadopago.com/mlv/herramientas/aplicaciones
// Colombia: https://www.mercadopago.com/mco/herramientas/aplicaciones
// Chile: https://www.mercadopago.com/mlc/herramientas/aplicaciones
try {
    $now = date('[d-m-Y H:i:s]');
    if ($config['mp']['sandboxMode']) {
        $mp = new MP($config['mp']['SANDBOX_CLIENT_ID'], $config['mp']['SANDBOX_CLIENT_SECRET']);
    } else {
        $mp = new MP($config['mp']['CLIENT_ID'], $config['mp']['CLIENT_SECRET']);
    }
    $mp->sandbox_mode($config['mp']['sandboxMode']);

// Check mandatory parameters
//    if (!isset($_GET["id"], $_GET["topic"]) || !ctype_digit($_GET["data_id"])) {
//        $handle = fopen('mp.log', 'a');
//        fwrite($handle, "------------------------\r\n");
//        foreach ($_REQUEST as $key => $value){
//            fwrite($handle, $now." {$key} => {$value} \r\n");
//        }
//        fwrite($handle, $now." ERROR 400 \r\n");
//        fwrite($handle, "------------------------\r\n");
//        http_response_code(400);
//        return;
//    }
    if(isset($_REQUEST['type'])){
        $topic = $_REQUEST['type'];
        $id = $_REQUEST['data_id'];
    }else{
        $topic = $_GET["topic"];
        $id = $_REQUEST['id'];
    }
    $merchant_order_info = NULL;
    
    switch ($topic) {
        case 'payment':
            $payment_info = $mp->get("/v1/payments/" . $id);
            $merchant_order_info = $mp->get("/merchant_orders/" . $payment_info["response"]["order"]["id"]);
            break;
        case 'merchant_order':
            $merchant_order_info = $mp->get("/merchant_orders/" . $id);
            break;
        default:
            $merchant_order_info = NULL;
    }
    
    if ($merchant_order_info == NULL) {
        echo "Error obtaining the merchant_order";
        die();
    }
    if ($merchant_order_info["status"] == 200) {
        $handle = fopen('mp.log', 'a');
        fwrite($handle, "------------------------\r\n");
        foreach ($_REQUEST as $key => $value){
            fwrite($handle, $now." Status 200 {$key} => {$value} \r\n");
        }
        fwrite($handle, "------------------------\r\n");
    }
} catch (MercadoPagoException $e) {
    $handle = fopen('mp.log', 'a');
    fwrite($handle, "------------------------\r\n");
    foreach ($_REQUEST as $key => $value){
        fwrite($handle, $now." {$key} => {$value} \r\n");
    }
    fwrite($handle, $now." ERROR: {$e->getMessage()} \r\n");
    fwrite($handle, "------------------------\r\n");
}