PHP study notes: WeChat applet and public account development
Oct 09, 2023 am 11:05 AM
PHP study notes: WeChat applet and public account development
With the rapid development of the mobile Internet, WeChat has become one of the most widely used social media platforms. . In order to meet the needs of users, WeChat provides two development methods: mini programs and official accounts. This article will introduce how to use PHP language to develop WeChat mini programs and public accounts, and provide some specific code examples.
1. WeChat Mini Program Development
- Preparation work
First, we need to apply for a Mini Program account on the WeChat public platform and obtain the Mini Program account The AppID and AppSecret of the program. Then, build a PHP development environment locally and ensure that the PHP running environment and related extension libraries are installed.
- Mini program login
Mini program login is an important function in mini program development. You can use the login API provided by WeChat to implement the user login and registration functions of the mini program. The following is a simple sample code:
<?php // 獲取小程序登錄憑證code $code = $_GET['code']; // 調(diào)用接口，獲取session_key和openid $url = "https://api.weixin.qq.com/sns/jscode2session?appid=YOUR_APPID&secret=YOUR_APP_SECRET&js_code=$code&grant_type=authorization_code"; $response = file_get_contents($url); $result = json_decode($response, true); $session_key = $result['session_key']; $openid = $result['openid']; // 根據(jù)openid查詢用戶信息，如果不存在則注冊(cè)新用戶 // ... ?>
- Data operation
Mini programs usually need to interact with the background database for data, and the PHP language can be used to operate the database. The following is a sample code using a MySQL database:
<?php
// 連接數(shù)據(jù)庫
$mysqli = new mysqli('localhost', 'username', 'password', 'dbname');
// 查詢數(shù)據(jù)
$query = "SELECT * FROM users";
$result = $mysqli->query($query);
// 處理查詢結(jié)果
while ($row = $result->fetch_assoc()) {
echo $row['name'];
}
// 插入數(shù)據(jù)
$name = $_POST['name'];
$age = $_POST['age'];
$query = "INSERT INTO users (name, age) VALUES ('$name', '$age')";
$mysqli->query($query);
// 更新數(shù)據(jù)
$id = $_POST['id'];
$name = $_POST['name'];
$query = "UPDATE users SET name='$name' WHERE id=$id";
$mysqli->query($query);
// 刪除數(shù)據(jù)
$id = $_POST['id'];
$query = "DELETE FROM users WHERE id=$id";
$mysqli->query($query);
// 關(guān)閉數(shù)據(jù)庫連接
$mysqli->close();
?>2. WeChat public account development
- Preparation work
Similarly, we need to create a WeChat public account The platform applies for a public account and obtains the AppID and AppSecret of the public account. Then, configure the URL and Token in the official account settings for message reception and verification.
- Receive messages
The public account can receive text messages, picture messages, audio messages, etc. sent by users. The following is a sample code for receiving text messages:
<?php
// 驗(yàn)證消息的合法性
$signature = $_GET['signature'];
$timestamp = $_GET['timestamp'];
$nonce = $_GET['nonce'];
$token = 'YOUR_TOKEN';
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode('', $tmpArr);
$tmpStr = sha1($tmpStr);
if ($tmpStr == $signature) {
// 驗(yàn)證成功
// 處理接收的消息
$postStr = file_get_contents('php://input');
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$type = $postObj->MsgType;
switch ($type) {
case 'text':
$content = $postObj->Content;
echo "接收到文本消息：$content";
break;
// 其他類型的消息
// ...
}
} else {
// 驗(yàn)證失敗
echo "驗(yàn)證失敗";
}
?>- Send message
Official accounts can send text messages, picture messages, graphic messages, etc. to users. The following is a sample code for sending text messages:
<?php
// 發(fā)送文本消息
$access_token = 'YOUR_ACCESS_TOKEN';
$openid = 'USER_OPENID';
$content = 'Hello, World!';
$url = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=$access_token";
$data = array(
'touser' => $openid,
'msgtype' => 'text',
'text' => array('content' => $content)
);
$options = array(
'http' => array(
'method' => 'POST',
'header' => 'Content-Type:application/json',
'content' => json_encode($data)
)
);
$context = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);
if ($result['errcode'] == 0) {
echo "發(fā)送成功";
} else {
echo "發(fā)送失敗";
}
?>The above are some basic operations for developing WeChat applets and public accounts using PHP language. I hope it can be helpful to everyone. Of course, there is still a lot involved in WeChat development, which requires further in-depth study and practice. I wish everyone will go further and further on the road of WeChat development.
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