dedecms在线留言

<?php
// 连接数据库
$host = 'localhost';
$user = 'root';
$pass = '';
$dbname = 'dedecms';
$conn = new mysqli($host, $user, $pass, $dbname);

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

// 获取留言
$sql = "SELECT * FROM `dede_guestbook`";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "留言人: " . $row["username"]. " - 留言内容: " . $row["content"]. "<br>";
    }
} else {
    echo "没有留言";
}

// 提交留言
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST['username'];
    $content = $_POST['content'];
    $sql = "INSERT INTO `dede_guestbook` (username, content) VALUES ('$username', '$content')";
    if ($conn->query($sql) === TRUE) {
        echo "留言成功";
    } else {
        echo "留言失败: " . $conn->error;
    }
}

$conn->close();
?>

<!-- 留言表单 -->
<form method="post" action="">
    用户名: <input type="text" name="username"><br>
    留言内容: <textarea name="content"></textarea><br>
    <input type="submit" value="提交">
</form>