this->error('产品已下架');
}
$outTradeNo = out_trade_no();
$data = [
'notify_url...],
['subject','require','请输入标题'],
['body','require','请输入描述'],
['notify_url...empty($data['notify_url'])) {
$config['notify_url'] = $data['notify_url'];
}...openapi.alipay.com/gateway.do",
//应用ID
'app_id' => "",
//异步通知地址,只有扫码支付预下单可用
'notify_url