织梦数据库怎么写

$cfg_dbhost = 'localhost'; // 数据库服务器
$cfg_dbname = 'dedecms'; // 数据库名称
$cfg_dbuser = 'root'; // 数据库用户名
$cfg_dbpwd = 'password'; // 数据库密码
$cfg_dbprefix = 'dede_'; // 数据表前缀

<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpwd = 'password';
$dbname = 'dedecms';

$conn = mysqli_connect($dbhost, $dbuser, $dbpwd, $dbname);

if (!$conn) {
    die('连接失败: ' . mysqli_connect_error());
}

$sql = "SELECT * FROM dede_archives LIMIT 10";
$result = mysqli_query($conn, $sql);

if (mysqli_num_rows($result) > 0) {
    while($row = mysqli_fetch_assoc($result)) {
        echo "ID: " . $row["id"]. " - 标题: " . $row["title"]. "<br>";
    }
} else {
    echo "0 结果";
}

mysqli_close($conn);
?>

<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpwd = 'password';
$dbname = 'dedecms';

$backup_file = 'backup_' . date('Y-m-d_H-i-s') . '.sql';

$command = "mysqldump --user={$dbuser} --password={$dbpwd} --host={$dbhost} {$dbname} > {$backup_file}";

exec($command, $output, $return_var);

if ($return_var === 0) {
    echo "数据库备份成功: " . $backup_file;
} else {
    echo "数据库备份失败";
}
?>