实例化
$apple_pay = new \JiaLeo\Payment\Applepay\IAP();
$receipt = $_POST['receipt']; //支付凭证
$sanbox = true; //是否沙盒模式
//验签
$data = $apple_pay->checkPay($receipt, sanbox);
if ($data['status'] != 0) {
throw new Exception('购买状态错误!');
}
var_dump($data);