Use EasyWeChat and PHP to develop e-commerce functions of WeChat mini programs

Using EasyWeChat and PHP to develop e-commerce functions of WeChat mini programs

In recent years, with the rapid development of WeChat mini programs, more and more companies have begun to use them as an important channel for e-commerce. In order to realize the e-commerce function of WeChat applet, we can use EasyWeChat and PHP development tools to build a complete e-commerce platform. This article will introduce how to use EasyWeChat and PHP to develop the e-commerce function of WeChat applet, and provide some code samples for reference.

1. Building the environment and installing dependencies

First, make sure you have installed the PHP environment and Composer package management tool. Then, execute the following command in the project folder to install EasyWeChat and other required dependencies:

composer require overtrue/easywechat

2. Create a WeChat applet and obtain the AppID and AppSecret

In developing WeChat Before creating a mini program, you first need to create a mini program on the WeChat open platform and obtain the corresponding AppID and AppSecret. Through this information, we can communicate with the WeChat server.

3. Configuring EasyWeChat

In the root directory of the project, create a config.php file and add the following code to it:

<?php

return [
    'app_id' => 'your-app-id',
    'secret' => 'your-app-secret',
    'response_type' => 'array',
];

4. Create callback handler

In the controllers folder of the project, create a CallbackController.php file to handle callback requests from the WeChat server. Add the following code:

<?php

namespace AppControllers;

use EasyWeChatFactory;

class CallbackController
{
    public function handle()
    {
        $config = require_once 'config.php';
        $app = Factory::miniProgram($config);

        $app->server->serve();
    }
}

5. Add routing rules

In the routes directory of the project, open the web.php file and add the following routing rules:

$app->get('/callback', 'AppControllersCallbackController:handle');

6. Deploy the project and start the server

Execute the following command in the command line to start the PHP built-in server:

php -S localhost:8000 -t public

Now, we have completed the basics of the project After setting up, you can start developing the e-commerce function of the WeChat applet.

7. Get user information

Using the Auth module of EasyWeChat, we can easily obtain the basic information of the mini program user. The following code demonstrates how to obtain the user's OpenID:

use EasyWeChatFactory;

$config = require_once 'config.php';
$app = Factory::miniProgram($config);

$auth = $app->auth;

$session = $auth->session($code);

$openId = $session->get('openid');

8. Get the product list

Using EasyWeChat's WeChat payment module, we can easily obtain the product list on the mini program , and displayed to the user. The following code demonstrates how to obtain a product list:

use EasyWeChatFactory;

$config = require_once 'config.php';
$app = Factory::miniProgram($config);

$payment = $app->payment;

$params = [
    'type' => 'mch_goods', // 订单类型，此处为商户商品
    'offset' => 0, // 分页偏移量
    'count' => 10, // 每页数量
];

$result = $payment->getOrder($params);

$goods = $result['goods_detail'];

9. Create an order

Using EasyWeChat’s WeChat payment module, we can easily create an order on the mini program and send it Pay the user. The following code demonstrates how to create an order:

use EasyWeChatFactory;

$config = require_once 'config.php';
$app = Factory::miniProgram($config);

$payment = $app->payment;

$params = [
    'body' => '商品名称',
    'out_trade_no' => '商户订单号',
    'total_fee' => '订单金额(分)',
    'openid' => '用户openid',
];

$result = $payment->order->unify($params);

$prepayId = $result['prepay_id'];

10. Initiate payment

Using EasyWeChat's WeChat payment module, we can easily initiate a payment request to the WeChat server. The following code demonstrates how to initiate a payment request to the WeChat server:

use EasyWeChatFactory;

$config = require_once 'config.php';
$app = Factory::miniProgram($config);

$payment = $app->payment;

$params = [
    'appId' => '小程序AppID',
    'timeStamp' => time(),
    'nonceStr' => '随机字符串',
    'package' => '预支付交易会话标识',
    'signType' => '签名类型',
];

$paySign = $payment->configForPayment($params);

The above is a brief description and code example of using EasyWeChat and PHP to develop the e-commerce function of the WeChat applet. Through these code examples, we can implement the basic e-commerce functions of WeChat mini programs, such as user information acquisition, product list display, order creation and payment, etc. I hope this article is helpful to you, and I wish you happy development!

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