How to implement WeChat applet cloud development with PHP

With the continuous advancement of world technology, mobile Internet has gradually become an important part of people's daily life. Especially with the popularization of smart phones, the development of network technology and people's demand for convenient, efficient and safe services, WeChat mini programs have emerged and become an indispensable part of people's lives and work. At the same time, in order to better meet the needs of users, WeChat mini programs provide cloud development functions. Users can store and process their own data on WeChat's cloud, which greatly improves development efficiency and security. This article will introduce how to use PHP to implement cloud development of WeChat mini programs, helping developers better utilize the cloud development functions of WeChat mini programs.

1. What is WeChat mini program cloud development

In order to facilitate users to use and develop mini programs, WeChat provides a new development method in mini programs-cloud development. Cloud development mainly provides the following functions:

1. Database: Users can store data in the cloud of mini programs to achieve data persistence.

2. Cloud functions: Users can write and execute their own code in the cloud to implement server-side logical calculations.

3. Storage: Users can store their files in the cloud of the mini program to achieve efficient file management.

2. Use PHP to implement WeChat Mini Program cloud development

Before using PHP to implement WeChat Mini Program cloud development, we need to first understand some basic concepts and technical applications of WeChat Mini Program cloud development.

1. The basic framework of the mini program

The WeChat mini program is developed using a front-end framework. There are two main frameworks to choose from, namely weui and mpvue. Among them, weui is a UI framework based on the WeChat design language. It comes with more than 60 components and is easy to develop quickly. mpvue is a small program development framework based on Vue.js. It can quickly develop small programs and supports the syntax and features of Vue.js.

2. Application of cloud functions

When using PHP to implement cloud development of WeChat mini programs, you need to use cloud function technology. Cloud functions are codes that run in the cloud. Users can implement their own business logic by calling cloud functions. In cloud functions, users can directly call the cloud development API provided by WeChat applet to implement additions, deletions, modifications and queries to the database, generation and push of new messages, user authentication and permission control, etc.

3. Use PHP to connect to the mini program database

When using PHP to connect to the mini program database, you need to obtain the AppID and AppSecret of the mini program developer first. After obtaining these two key parameters, the user can use PHP to connect to the mini program database to read and write data. The specific operations are as follows:

(1) Obtain the access_token of the mini program

We need to obtain the access_token of the mini program first, which is used to call the mini program API interface.

function getAccessToken(){

$url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type =client_credential&appid=APPID&secret=APPSECRET';

$res = http_request($url);

$res = json_decode($res,true);

return $res[ 'access_token'];

}

?>

(2) Use access_token to connect to the database

After obtaining the access_token, we can use PHP connects to the database of the applet.

function connectDatabase(){

$url = 'https://api.weixin.qq.com/tcb/databasequery?access_token=ACCESS_TOKEN ';

$data = '{"env":"ENV","query":"db.collection("COLLECTION").get()"}';

$res = http_request($url,$data);

$res = json_decode($res,true);

return $res['data'];

}

?>

3. Summary

Through the above analysis and introduction, we can see that it is not difficult to use PHP to implement WeChat applet cloud development. Users can use cloud function technology and PHP's connected database technology to quickly and easily store and process cloud data. At the same time, you can also appropriately encapsulate and optimize cloud functions and databases according to your actual development needs to improve code reusability and efficiency. As long as they master the above technologies and methods, I believe developers can make better use of the cloud development functions of WeChat mini programs to improve development efficiency and user experience.

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