How can the user ensure that the files and folders are placed at the desired level in the ZIP archive without creating an additional folder?

To ensure that files and folders are placed at the desired level in the ZIP archive without creating an additional folder, the user can use the `ZipArchive` class in PHP and set the correct path for each file before adding it to the archive. By specifying the desired path for each file, the user can control the folder structure within the ZIP archive without creating any additional folders.

$zip = new ZipArchive();
$zipFileName = 'archive.zip';

if ($zip->open($zipFileName, ZipArchive::CREATE) === TRUE) {
    // Add files to the desired level in the ZIP archive
    $file1 = '/path/to/file1.txt';
    $desiredPath1 = 'folder1/file1.txt';
    $zip->addFile($file1, $desiredPath1);

    $file2 = '/path/to/file2.txt';
    $desiredPath2 = 'folder2/file2.txt';
    $zip->addFile($file2, $desiredPath2);

    $zip->close();
    echo 'Files added to ZIP archive successfully.';
} else {
    echo 'Failed to create ZIP archive.';
}