如何使用php mysql统计按钮点击量

<?php
// 连接到MySQL数据库
$servername = "数据库服务器地址";
$username = "数据库用户名";
$password = "数据库密码";
$dbname = "数据库名";

$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 获取按钮的唯一标识符
$buttonId = $_POST['button_id'];

// 检查数据库中是否已存在该按钮的记录
$sql = "SELECT * FROM button_clicks WHERE button_id = '$buttonId'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 如果存在记录，则将点击量加1
    $sql = "UPDATE button_clicks SET click_count = click_count + 1 WHERE button_id = '$buttonId'";
    $conn->query($sql);
} else {
    // 如果不存在记录，则插入一条新的记录
    $sql = "INSERT INTO button_clicks (button_id, click_count) VALUES ('$buttonId', 1)";
    $conn->query($sql);
}

// 关闭数据库连接
$conn->close();
?>