* $business->setClientCert('/your/path/to/apiclient_cert.pem');
* $business->setClientKey('/your/path/to/apiclient_key.pem');
*/
$business = new Business();
$business->appid(APPID);
$business->appsecret(APPSECRET);
$business->mch_id(MCHID);
$business->mch_key(MCHKEY);
// print_r($business->getParams());
/**
* 第 2 步：定义订单
*/
$order = new Order();
$order->body('iphone 6 plus');
$order->out_trade_no(date('Y-m-dHis') . mt_rand(10000, 99999));
$order->total_fee('1');
// $order->openid($_SESSION['openid']);
$order->openid('oWY-5jjLjo7pYUK86JPpwvcnF2Js');
$order->notify_url('http://code.1999.me/Wechat/example/payment_notify.php');
// print_r($order->getParams());
/**
* 第 3 步：统一下单
*/
$unifiedorder = new Unifiedorder();
$unifiedorder->setBusiness($business);
$unifiedorder->setOrder($order);
/**
* 第 4 步：生成支付配置文件
*/
$o = new Payment($unifiedorder);
$configJSON = $o->getConfig();
