How to use PHP to implement WeChat public account development and interface docking

How to use PHP to implement WeChat public account development and interface docking

Introduction:
With the popularity of smart phones and the development of the mobile Internet, WeChat has become a One of the indispensable social tools in daily life. More and more companies and individuals are beginning to pay attention to the development and interface docking of WeChat public accounts in order to better interact with users and display their products or services. In the field of PHP development, there are also many mature libraries and tools that can help us quickly develop WeChat official accounts and interface docking. This article will introduce how to use PHP to realize the development and interface docking of WeChat public accounts, and also give some code examples. hope that it can help us.

1. Introduction to WeChat public account development
WeChat public account is a type of account on the WeChat platform, which is used to display functions such as information dissemination, service promotion and user interaction based on the WeChat platform. WeChat public accounts can be divided into two types: subscription accounts and service accounts. Subscription accounts are mainly used for information dissemination and content display, such as news, articles, etc.; while service accounts are more suitable for enterprises and organizations, and can carry out richer business display and user interaction through customized menus, web page authorization, etc.

2. Preparations for WeChat public account development

1. Register the WeChat public account and complete the basic settings
2. Get the AppID and AppSecret of the WeChat public account
3. Enable the development mode of the WeChat official account, and configure the interface URL and Token value

3. Use PHP to implement the WeChat official account interface docking

1. Verify the interface URL and Token Value
   After we configure the interface URL and Token value of the official account, the WeChat server will send a GET request to the URL to verify the validity of the interface. We need to write a script to handle this verification request and return the corresponding verification result. The sample code is as follows:

<?php
define("TOKEN", "your_token");

$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$echostr = $_GET["echostr"];

$tmpArr = array(TOKEN, $timestamp, $nonce);
sort($tmpArr, SORT_STRING);
$tmpStr = implode($tmpArr);
$tmpStr = sha1($tmpStr);

if ($tmpStr == $signature) {
    echo $echostr;
} else {
    echo "error";
}

2. Processing messages sent by the WeChat server
   When the user follows, sends a message, or clicks on the menu, the WeChat server will push the relevant message to our configuration on the interface URL. We need to write corresponding scripts to process these messages and return corresponding results. The following is a sample code for receiving text messages and replying:

<?php
function responseText($toUsername, $fromUsername, $content){
    $textTpl = "<xml>
    <ToUserName><![CDATA[%s]]></ToUserName>
    <FromUserName><![CDATA[%s]]></FromUserName>
    <CreateTime>%s</CreateTime>
    <MsgType><![CDATA[text]]></MsgType>
    <Content><![CDATA[%s]]></Content>
    </xml>";
    
    $time = time();
    $result = sprintf($textTpl, $toUsername, $fromUsername, $time, $content);
    echo $result;
}

$rawXml = file_get_contents("php://input");
$xml = simplexml_load_string($rawXml);

$toUsername = $xml->ToUserName;
$fromUsername = $xml->FromUserName;
$content = $xml->Content;

responseText($fromUsername, $toUsername, "你发送的消息是：".$content);

IV. Conclusion
Through the above introduction and code examples, we can see the use of PHP to implement the development and interface of WeChat public accounts Docking is not complicated. Similarly, in the actual development process, you can also use other libraries and frameworks of PHP to simplify the development process, such as using Guzzle to handle HTTP requests, and using frameworks such as Laravel or Symfony to build more complete applications. I hope this article will inspire and help everyone in implementing WeChat public account development and interface docking in PHP.

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