php调用首页新闻

<?php
// 连接到数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "news_db";

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

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 查询最新的新闻条目
$sql = "SELECT id, title, content, date FROM news ORDER BY date DESC LIMIT 5";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "<h2>" . $row["title"] . "</h2>";
        echo "<p>" . $row["content"] . "</p>";
        echo "<p>发布日期: " . $row["date"] . "</p>";
    }
} else {
    echo "没有新闻条目";
}

$conn->close();
?>