formatTime

formatTime.php

<?php

/**
 * Format a number of seconds.
 *
 * Format a number of seconds into a number of seconds, minutes, hours and days.
 * Produces output like "1 second", "110 seconds", "4 hours" or "123 microseconds".
 * The accuracy gets a little rough once it gets into months, but it's only meant
 * as an approximation.
 *
 * @author Craig Anderson <craiga@craiga.id.au>
 * @link https://gist.github.com/3186287
 */
function formatTime($time)
{
	$unit = "seconds";
	if($time < 1)
	{
		$time = $time * 1000; // seconds to milliseconds
		$unit = "milliseconds";
		if($time < 1)
		{
			$time = $time * 1000; // milliseconds to microseconds
			$unit = "microseconds";
		}
		if($time < 1)
		{
			$time = $time * 1000; // microseconds to nanoseconds
			$unit = "nanoseconds";
		}
	}
	else
	{
		if($time > 120)
		{
			$time = $time / 60; // seconds to minutes
			$unit = "minutes";
		}
		if($time > 120)
		{
			$time = $time / 60; // minutes to hours
			$unit = "hours";
		}
		if($time > 48 && $unit == "hours")
		{
			$time = $time / 24; // hours to days
			$unit = "days";
		}
		if($time > 60 && $unit == "days")
		{
			$time = $time / 30; // days to months
			$unit = "months";
		}
		if($time > 24 && $unit == "months")
		{
			$time = $time / 12; // months to years
			$unit = "years";
		}
	}
	if($time == 1)
	{
		$unit = preg_replace("/s$/", "", $unit); // remove "s" from end of unit
	}
	return sprintf("%s %s", number_format($time), $unit);
}