How to use PHP to implement broadcasting reminder function? Detailed tutorial sharing

How to use PHP to implement the broadcast reminder function

With the continuous emergence of online live broadcast platforms, more and more anchors are beginning to use online platforms to showcase their talents and Life. It is very important for fans to receive broadcast notifications from their favorite anchors as soon as possible. This article will introduce in detail how to use PHP to implement the broadcast start reminder function so that your fans will never miss any live broadcast.

1. Understand the basic principle of the broadcast reminder function
   The basic principle of the broadcast reminder function is that the anchor sends a request to the server before the broadcast starts. After receiving the request, the server records the anchor's information and sends it to the host. When the broadcast starts, a reminder notification will be sent to all users who have subscribed to the anchor. Therefore, implementing the broadcast start reminder function requires taking into account the recording of anchor information and the processing of user subscriptions.
2. Create database tables
   First, we need to create two database tables, one is used to store anchor information, including anchor ID, nickname, etc.; the other is used to store user subscription information, including user ID and subscribed anchor ID. The following is the SQL statement to create a database table:

CREATE TABLE streamers (
    id INT AUTO_INCREMENT PRIMARY KEY,
    streamer_id INT,
    streamer_name VARCHAR(50)
);

CREATE TABLE subscriptions (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT,
    streamer_id INT
);

3. Write PHP code to implement the broadcast reminder function
   Next, we will implement the broadcast reminder function through PHP code. We will implement two interfaces, one for anchors to send broadcast requests, and the other for users to subscribe to anchors.

<?php
// 连接数据库
$conn = new mysqli("localhost", "root", "root", "live_streaming");

// 处理主播发送开播请求
if(isset($_POST['streamer_id'])) {
    $streamer_id = $_POST['streamer_id'];
    $streamer_name = $_POST['streamer_name'];

    $sql = "INSERT INTO streamers (streamer_id, streamer_name) VALUES ('$streamer_id', '$streamer_name')";
    $conn->query($sql);
    echo "开播请求已发送";
}

// 处理用户订阅主播
if(isset($_POST['user_id']) && isset($_POST['streamer_id'])) {
    $user_id = $_POST['user_id'];
    $streamer_id = $_POST['streamer_id'];

    $sql = "INSERT INTO subscriptions (user_id, streamer_id) VALUES ('$user_id', '$streamer_id')";
    $conn->query($sql);
    echo "订阅成功";
}
?>

4. Implement the broadcast reminder function
   Finally, we implement the broadcast reminder function through scheduled tasks or WebSocket. When the anchor starts broadcasting, the server queries the users who have subscribed to the anchor, finds the corresponding user ID in the user subscription table, and then sends reminder notifications to these users.

<?php
// 查询订阅了该主播的用户
$sql = "SELECT user_id FROM subscriptions WHERE streamer_id = $streamer_id";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        $user_id = $row['user_id'];
        // 向用户发送提醒通知，可使用邮件、短信等方式
        sendNotification($user_id, "主播{$streamer_name}已开播");
    }
}

function sendNotification($user_id, $message) {
    // 具体实现发送通知的代码
}
?>

Through the above steps, we have realized the entire process of using PHP to implement the broadcast reminder function. In actual applications, you can also add more functions according to your needs, such as unsubscription, scheduled reminders, etc. I hope this tutorial can help you so that your fans will no longer miss every wonderful live broadcast.

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