Upload file menggunakan PHP tanpa validasi

<?php
if (isset($_POST['submit']) {
    $tmpfile = $_FILES['fileupload']['tmp_name'];
    $newfile = "uploads/".time().$_FILES['fileupload']['name'];
    if(move_uploaded_file($tmpfile, $newfile)) {
        echo "Upload file sukses";
    } else {
        echo "Upload file gagal";
    }
}
?>
<!DOCTYPE html>
<html lang="id">
<head><title>Mekanisme Upload File</title></head>
<body>
    <h2>Mekanisme Upload File</h2>
    <form action="<?= $_SERVER['PHP_SELF']; ?>" method="post"
        enctype="multipart/form-data">
        <label for="thefile">
        File (maksimum <?= ini_get('post_max_size') ?>B) :</label>
        <input type="file" id="thefile" name="fileupload">
        <input type="submit" name="submit" value="Upload">
    </form>
</body>
</html>