/*微信小程序的配置信息
微信商户信息
*/

public function __construct()
{
    parent::__construct();
    $this->OrderModel = new OrderModel();
    $this->config = [
        ‘app_id‘ => config(‘wechat.cmf_wechat_appid‘),
        ‘secret‘ =>config(‘wechat.cmf_wechat_appsecret‘),
        ‘mch_id‘             => ‘ ‘, //商户号
        ‘key‘                => ‘ ‘,   // API 密钥
        ‘notify_url‘         => ‘ ‘,     // 你也可以在下单时单独设置来想覆盖它
     // 下面为可选项
        // 指定 API 调用返回结果的类型：array(default)/collection/object/raw/自定义类名
        ‘response_type‘ => ‘array‘,
        ‘log‘ => [
            ‘level‘ => ‘debug‘,
            ‘file‘ => __DIR__.‘/wechat.log‘,
        ],
    ];

}
/*拿到用户code 后下订单 创建订单
拿到用户加密信息后解析手机号phone
*/

public function creatOrder(){
    $id   = $this->getArg(‘id‘,1,‘intval‘);
    $code = $this->getArg(‘code‘);
    //接收用户信息
    $nickname = $this->getArg(‘nickname‘);
    $headLogo = $this->getArg(‘headLogo‘);
    $iv = $this->getArg(‘iv‘);//加密数据
    $encryptedData = $this->getArg(‘encryptedData‘);//加密数据
    $money  =   $this->getArg(‘amount‘,0.01,‘float‘);
    $fenmoney = 100*$money;
    //获取opeinid
    $app = Factory::miniProgram($this->config);
    $userinfo=$app->auth->session($code);
    if(array_key_exists(‘openid‘,$userinfo)){
        $openid = $userinfo[‘openid‘];
        $session= $userinfo[‘session_key‘];
  //解密数据
        $decryptedData = $app->encryptor->decryptData($session, $iv, $encryptedData);
        //mydebug($decryptedData);
        if(array_key_exists(‘phoneNumber‘,$decryptedData)){
            $valData[‘phone‘]=$decryptedData[‘phoneNumber‘];
        }
        else{
            $decryptedData[‘phoneNumber‘]=‘111111‘;
        }

    }

    else{
        $this->returnJson([‘code‘ =>401, ‘msg‘ => ‘获取用户信息失败‘, ‘data‘ => $userinfo]);
    }

    $order_id=date("YmdHis").rand(1000,9999);
 //根据资助信息id 查看资助信息是否需要支付
    $helpInfo=Children::getInstance()->getById($id);
    if($helpInfo[‘data‘][‘help_status‘]==0){
        $valData[‘order_id‘]=$order_id;
        $valData[‘open_id‘]=$openid;
        $valData[‘help_id‘]=$helpInfo[‘data‘][‘id‘];
        $valData[‘createtime‘]=time();
        $valData[‘nickname‘]=$nickname;
        $valData[‘money‘]=$money;
        $valData[‘wx_headlogo‘]=$headLogo;
       //添加支付订单信息
        $orderInfo=db(‘order‘)->insertGetId($valData);
        // $orderInfo=$this->OrderModel->insertGetId($valData);
  //调用微信统一下单接口
        if($orderInfo>0){
            $payContent=[
                ‘body‘ => ‘商品名称‘,
                ‘out_trade_no‘ => $order_id,
                ‘total_fee‘ => $fenmoney,
                ‘spbill_create_ip‘ => ‘‘, // 可选，如不传该参数，SDK 将会自动获取相应 IP 地址
                ‘notify_url‘ => ‘url‘, // 支付结果通知网址，如果不设置则会使用配置里的默认地址
                ‘trade_type‘ => ‘JSAPI‘, // 请对应换成你的支付方式对应的值类型
                ‘openid‘ => $openid,
            ];
            $payinfo=$this->Wxhelppay($payContent);
            $this->returnJson([‘code‘ =>200, ‘msg‘ => ‘创建订单信息成功‘, ‘data‘ => $payinfo,‘info‘ =>$decryptedData[‘phoneNumber‘]]);
        }
        else{
            $this->returnJson([‘code‘ =>401, ‘msg‘ => ‘获取订单信息失败‘, ‘data‘ => ‘‘]);
        }
    }
    else{
        $this->returnJson([‘code‘ => 0, ‘msg‘ => ‘请求数据有误，请核实‘, ‘data‘ => ""]);
    }
}

 /* @todo 统一下单接口
 */
public function Wxhelppay($payContent){
    $payment = Factory::payment($this->config);
    $result = $payment->order->unify($payContent);
    if ($result[‘result_code‘] == ‘SUCCESS‘ && $result[‘return_code‘] == ‘SUCCESS‘) {
        $prepayId = $result[‘prepay_id‘];
        $jssdk = $payment->jssdk;
        $config = $jssdk->sdkConfig($prepayId);
        $config[‘timeStamp‘] = $config[‘timestamp‘];//此处需要将小写s变为大写
        return $config;//（对应原理4）
    }
    else{
        $this->returnJson([‘code‘ => 0, ‘msg‘ => ‘微信支付签名失败，data‘, ‘data‘ => $result]);
    }
}

/* * @todo 回调接口
 */
public function notify()
{
    $payment = Factory::payment($this->config);
    $response = $payment->handlePaidNotify(function ($message, $fail) {

        if ($message[‘return_code‘] === ‘SUCCESS‘ && $message[‘result_code‘] === ‘SUCCESS‘) {
            // 处理信息
            $orderInfo = $this->OrderModel->where("order_id", $message[‘out_trade_no‘])->find();
 // 如果信息不存在直接返回错误信息
            if (!$orderInfo) {
                return $fail("订单信息不存在");
            }
 // 信息存在就判断当前订单的状态
            if ($orderInfo[‘pay_status‘] == 1 ) {
            }
   // 查询该笔订单是否已经支付过了
            if ($message[‘return_code‘] === ‘SUCCESS‘) {
    // 判断是否支付成功
                if (isset($message[‘result_code‘]) && $message[‘result_code‘] === ‘SUCCESS‘) {
                    $this->OrderModel->startTrans();
                    try {
 // 当前的订单支付成功
                        $this->OrderModel->where("order_id", $message[‘out_trade_no‘])->update([‘pay_status‘ => 1, ‘paytime‘ => time(), ‘description‘ => $message[‘transaction_id‘]]);
   // 更新订单用户数据
                        $data[‘id‘]=$orderInfo[‘help_id‘];
                        $data[‘help_status‘]=1;
                        $data[‘asset_number‘]=$message[‘cash_fee‘];
                        $data[‘help_id‘]=$orderInfo[‘nickname‘];
                        $data[‘help_phone‘]=$orderInfo[‘phone‘];
                        $a=Children::getInstance()->update($data);
                        $this->OrderModel->commit();
                        return true;
                    } catch (\Exception $exception) {
                        $this->OrderModel->rollback();
                        return $fail($exception->getMessage());
                    }
                }

            } elseif ($message[‘result_code‘] === ‘FAIL‘) {
                return true;
            }
        }
    });
    return $response->send();
}

微信支付 easy wechat 使用