PHP を使用して、トリビア Web サイトで質問投票機能や人気質問ランキング機能を開発します。

<?php
// 连接数据库
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "question-answer";

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

// 获取用户投票
$questionId = $_POST['questionId'];
$voteType = $_POST['voteType'];

// 增加或减少问题的投票数
if ($voteType == 'upvote') {
    $sql = "UPDATE questions SET votes = votes + 1 WHERE id = $questionId";
} elseif ($voteType == 'downvote') {
    $sql = "UPDATE questions SET votes = votes - 1 WHERE id = $questionId";
}

// 执行 SQL 语句
$conn->query($sql);

// 关闭数据库连接
$conn->close();
?>

<?php
// 连接数据库
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "question-answer";

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

// 查询热门问题
$sql = "SELECT * FROM questions ORDER BY votes DESC, publish_time DESC";

// 执行 SQL 语句
$result = $conn->query($sql);

// 输出热门问题列表
if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo "问题标题: " . $row['title'] . " 投票数: " . $row['votes'];
        echo "<br>";
    }
} else {
    echo "暂无热门问题";
}

// 关闭数据库连接
$conn->close();
?>