What are the best practices for calculating and displaying upload times in PHP?

When calculating and displaying upload times in PHP, it is important to accurately calculate the elapsed time between the start and end of the upload process. This can be achieved by capturing the current time before and after the upload process, and then calculating the difference in seconds. The calculated time can then be formatted and displayed in a user-friendly way to provide feedback on the upload duration.

// Capture start time
$start_time = microtime(true);

// Perform upload process

// Capture end time
$end_time = microtime(true);

// Calculate elapsed time in seconds
$upload_time = $end_time - $start_time;

// Format and display upload time
echo "Upload took " . number_format($upload_time, 2) . " seconds";