How to use PHP to develop the dining reservation function of WeChat applet?

With the popularity of WeChat mini programs, various industries have gradually turned to marketing and services on mini programs; among them, the catering reservation function is one of the functions commonly used by many catering companies. This article will introduce how to use PHP to develop the dining reservation function of WeChat applet and provide specific code examples.

1. Introduction to the dining reservation function of WeChat Mini Program

The dining reservation function of WeChat Mini Program mainly includes two aspects: dish menu and reservation payment. The dish menu module is mainly used to display the dish information of restaurants or catering outlets, including dish names, prices, pictures, etc.; while the reservation and payment module is used to complete the payment process after users reserve dishes.

2. Use PHP to develop the dining reservation function of the WeChat mini program

1. Log in to the backend of the WeChat mini program

First, you need to log in to the backend of the WeChat mini program. And enter the "Development-Development Settings-Server Configuration" page. On this page, you need to fill in your server domain name in the "Server Domain Name" column and set the "Server Address (URL)" to the interface address of your server.

2. Write PHP interface code

Before writing PHP interface code, you need to configure your own server environment in advance and prepare the AppID and AppSecret required for WeChat applet development .

Next, we will write two PHP interface files, which are the interfaces for the menu and reservation and payment functions.

a. Food menu interface code example:

// Restaurant menu information
$menu = array(

array('name' => '宫保鸡丁', 'price' => 28, 'img' => 'http://wxapp.com/image/1.jpg'),
array('name' => '水煮鱼', 'price' => 38, 'img' => 'http://wxapp.com/image/2.jpg'),
array('name' => '回锅肉', 'price' => 28, 'img' => 'http://wxapp.com/image/3.jpg'),
// ... 更多菜品信息

);

echo json_encode($menu);

?>

b. Booking payment interface code example:

// Obtain the order information from the request of the WeChat applet
$order = array(

'out_trade_no' => $_REQUEST['out_trade_no'], // 商户订单号
'total_fee' => $_REQUEST['total_fee'], // 订单金额，单位：分
'openid' => $_REQUEST['openid'], // 用户的openid
// ... 更多订单信息

);

// Call the interface of the WeChat applet to proceed Payment
// ... WeChat payment interface

// Return the booking payment result
$result = array(

'code' => 0, // 0：表示支付成功，-1：表示支付失败
'message' => '支付成功'

);
echo json_encode($result) ;

?>

3. Calling the PHP interface in the WeChat applet

The code for the dish menu interface and reservation payment interface has been written and has been running in the server. Next, you need to call these interfaces in the WeChat applet to implement the meal reservation function.

a. Example of menu call:

wx.request({
url: 'http://wxapi.com/menu.php',
success: function( res) {

console.log(res.data);

}
});

b. Booking payment call example:

wx.request({
url: 'http:/ /wxapi.com/order.php',
data: {

out_trade_no: '', // 商户订单号
total_fee: '', // 订单金额，单位：分
openid: '' // 用户的openid

},
success: function(res) {

console.log(res.data);

}
});

At this point, the dining reservation function of the WeChat applet developed using PHP has been completed.

Summary

The dining reservation function is one of the common functions in WeChat mini programs. This article introduces how to use PHP to develop the dining reservation function of WeChat mini programs and provides specific code examples. I hope it will be helpful to readers who want to implement the dining reservation function on the WeChat mini program.

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