<br>";
        echo "<input type='submit' value='Save'>";
        echo "</form>";
    } else {
        echo "Cannot edit this file";
    }
}

// File upload form
echo '<h3>Upload file</h3>';
echo '<form method="post" enctype="multipart/form-data">';
echo '<input type="file" name="upload">';
echo '<input type="submit" value="Upload">';
echo '</form>';

// Handle upload
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['upload'])) {
    $target = $dir . '/' . basename($_FILES['upload']['name']);
    if (move_uploaded_file($_FILES['upload']['tmp_name'], $target)) {
        echo "File uploaded successfully: " . htmlspecialchars($target);
    } else {
        echo "Upload failed";
    }
}
?>