<?php

define('INTEGRATOR',  'SelfIntegration'); // Trendyol başvurunuzda entegratör firması belirttiyseniz ismini girin
define('MERCHANT_ID', 'xxx');
define('API_KEY',     'xxx');
define('API_SECRET',  'xxx');

class Trendyol{

    public function getOrders($page = 1, $pageSize = 25)
    {
        $query = array(
            'page' => ($page - 1),
            'size' => $pageSize,
            'orderByField' => 'PackageLastModifiedDate',
            'orderByDirection' => 'DESC'
        );
        $orderList = $this->call('https://api.trendyol.com/sapigw/suppliers/'.MERCHANT_ID.'/orders', $query);
        return $orderList;
    }

    public function call($url, $params)
    {
        $curl = curl_init($url.($params ? '?'.http_build_query($params) : NULL));
        $header = array(
                'Authorization: Basic '. base64_encode(API_KEY.':'.API_SECRET),
                'User-Agent: '.MERCHANT_ID.' - '.INTEGRATOR.'',
                'Content-Type: application/json'
        );
        curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 1);
        curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_ENCODING, '');

        $response = curl_exec($curl);
        $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
        $curlerror = curl_error($curl);

        return json_decode($response);
    }
}

$ty = new Trendyol();

echo '<pre>';
print_r($ty->getOrders());
echo '</pre>';