How can PHP developers efficiently handle file uploads with unique timestamps appended to the file names to prevent duplicates?

When handling file uploads in PHP, developers can prevent duplicates by appending unique timestamps to the file names. This can be achieved by generating a timestamp using the `time()` function and concatenating it with the original file name. By doing so, each uploaded file will have a unique name based on the timestamp, reducing the chances of duplicates. 

<?php
// Get the original file name
$originalFileName = $_FILES['file']['name'];

// Generate a unique timestamp
$timestamp = time();

// Append the timestamp to the file name
$newFileName = $timestamp . '_' . $originalFileName;

// Move the uploaded file to the desired directory with the new file name
move_uploaded_file($_FILES['file']['tmp_name'], 'uploads/' . $newFileName);
?>

Keywords

PHP file uploads unique timestamps prevent duplicates handling files

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