一个基本的微信支付的TP5.0方法代码

<?php
namespace app\index\controller;

use think\Controller;
use EasyWeChat\Foundation\Application;
use EasyWeChat\Payment\Order;
use EasyWeChat\Payment\Payment;

class Pay extends Controller {
    private $app;
    private $payment;

    public function _initialize() {
        $config = config('wechat');
        $this->app = new Application($config);
        $this->payment = $this->app->payment;
    }

    /*
     * 发起微信支付
     */
    public function wxpay() {
        $openid = session('openid');
        $order = new Order([
            'body' => '商品描述',
            'out_trade_no' => '商户订单号',
            'total_fee' => 1, // 单位：分
            'trade_type' => 'JSAPI',
            'openid' => $openid,
            'notify_url' => 'http://example.com/notify', // 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
        ]);
        $result = $this->payment->prepare($order);
        if ($result->return_code == 'SUCCESS' && $result->result_code == 'SUCCESS') {
            $prepayId = $result->prepay_id;
            $jssdk = $this->app->jssdk;
            $config = $jssdk->sdkConfig($prepayId);
            $this->assign('config', $config);
            return $this->fetch();
        } else {
            $this->error('支付失败');
        }
    }

    /*
     * 微信支付异步通知
     */
    public function notify() {
        $payment = $this->payment;
        $response = $payment->handleNotify(function($notify, $successful) {
            $outTradeNo = $notify->out_trade_no;
            if ($successful) {
                // 支付成功
                
            } else {
                // 支付失败
                
            }
            return true;
        });
        return $response;
    }
}

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