How to use PHP7.0 for WeChat public account development?

With the continuous development of mobile Internet, WeChat official accounts are playing an increasingly important role in our lives. In order to better meet user needs, the development of WeChat public accounts has also received more and more attention, especially from PHP developers. This article will introduce how to use PHP7.0 for WeChat public account development.

1. Basic process of WeChat public account development

Before we start to introduce how to use PHP7.0 to develop WeChat public accounts, let’s first understand the basic process of WeChat public account development.

1. Register a WeChat official account and obtain a developer ID and key.
2. Configure server information in the background of WeChat public platform.
3. Develop WeChat public account business logic and deploy it to the server.
4. Call the API through the WeChat public account to provide services to users.

2. Configure the WeChat public account server

Before developing the WeChat public account, we need to configure our server information in the WeChat public platform background. The specific steps are as follows:

1. Log in to the WeChat public platform, click "Basic Configuration" under the "Development" menu, and enter the basic configuration page.
2. In the basic configuration page, find the "Server Configuration" section and click the "Modify Configuration" button.
3. In the server configuration page, fill in the URL, Token and EncodingAESKey, and click the "Submit" button.
4. After submission, the WeChat public platform will send a GET request to the filled-in URL address to verify whether the Token is correct.

3. Implement WeChat public account development with PHP7.0

1. Get WeChat public account messages

When a user sends a message to a WeChat public account When the message is sent, the WeChat server will send the message to the URL address configured by the developer. We can obtain the messages sent by the WeChat server through PHP's $_GET and $_POST global variables.

Sample code:

<?php
    $token = 'your_token';
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
    $echostr = $_GET["echostr"];
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr);
    $tmpStr = implode($tmpArr);
    $tmpStr = sha1($tmpStr);
    if($tmpStr == $signature){
        echo $echostr;
        exit;
    }
    $postStr = file_get_contents('php://input');
    if (!empty($postStr)){
        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        $fromUsername = $postObj->FromUserName;
        $toUsername = $postObj->ToUserName;
        $msgType = $postObj->MsgType;
        $contentStr = $postObj->Content;
    }else{
        echo "";
        exit;
    }
?>

2. Reply to WeChat official account message

When we receive the user’s message, in order to meet the user’s needs, we need to The user's message is processed and the corresponding message is returned. We can return the message directly to the WeChat server through return.

Sample code:

<?php
    if($msgType == 'text'){
            $contentStr = '你发送的消息内容是:' . $contentStr;
            $textTpl = '<xml>
            <ToUserName><![CDATA['.$fromUsername.']]></ToUserName>
            <FromUserName><![CDATA['.$toUsername.']]></FromUserName>
            <CreateTime>'.time().'</CreateTime>
            <MsgType><![CDATA[text]]></MsgType>
            <Content><![CDATA['.$contentStr.']]></Content>
            </xml>';
            echo $textTpl;
            exit;
        }
?>

3. Send template message

In addition to replying to the user's message, we can also send template messages to the user. We need to apply for the template message first and get the template ID and keywords in the template. Then, call the API provided by WeChat in our code to send the template message to the specified user.

Sample code:

<?php
    $template = array(
        'touser' => $openid,
        'template_id' => 'your_template_id',
        'url' => 'http://your_link',
        'data' => array(
            'first' => array('value' => 'first'),
            'keyword1' => array('value' => 'keyword1'),
            'keyword2' => array('value' => 'keyword2'),
            'keyword3' => array('value' => 'keyword3'),
            'remark' => array('value' => 'remark')
        )
    );
    $url = 'https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=' . $access_token;
    $result = https_request($url,json_encode($template));

IV. Summary

This article introduces how to use PHP7.0 to develop WeChat public accounts, including configuring the WeChat public account server and obtaining WeChat public accounts Message, reply to WeChat public account messages and send template messages. Through the introduction of this article, I believe that everyone has mastered the basic knowledge of WeChat public account development and can further in-depth study and development.

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