How can the file naming process be improved to avoid overwriting uploaded images and ensure unique file names?

To avoid overwriting uploaded images and ensure unique file names, one solution is to append a timestamp or a unique identifier to the file name before saving it. This way, each uploaded image will have a distinct file name, preventing any conflicts. 

// Generate a unique filename by appending a timestamp
$timestamp = time();
$filename = $timestamp . '_' . $_FILES['file']['name'];

// Save the uploaded image with the unique filename
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $filename);

echo 'File uploaded successfully with unique filename: ' . $filename;

Keywords

file naming unique file names PHP image upload overwrite prevention

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