$config = [
    'key'             => '',  //美团联盟key
    'secret'          => '',  //美团联盟secret
    'callback_secret' => '',  //美团联盟callback_secret
];

//实例化美团联盟应用
$meiTuanUnion = \OneCoder\EasyTaoKe\Factory::meiTuanUnion($config);
$startTime = time() - 24 * 60 * 60;
$endTime   = time();

//获取美团联盟订单
$data = $meiTuanUnion->getOrderList($startTime, $endTime);

//回调验证,返回true验证通过
$callBackResult = $meiTuanUnion->validateCallback($params);