In PHP development, what strategies can be implemented to prevent unintended file duplication when specific actions are performed by users?

To prevent unintended file duplication when specific actions are performed by users in PHP development, one strategy is to generate a unique filename for each file uploaded by the user. This can be achieved by appending a timestamp or a random string to the original filename before saving it to the server.

// Generate a unique filename by appending a timestamp to the original filename
$originalFilename = $_FILES['file']['name'];
$extension = pathinfo($originalFilename, PATHINFO_EXTENSION);
$uniqueFilename = time() . '_' . uniqid() . '.' . $extension;

// Move the uploaded file to a directory with the unique filename
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $uniqueFilename);