Time ago function

time_ago.php

<?php

// Example: http://hotblocks.nl/tests/time_ago.php

function time_ago( $f_seconds, $f_size = 2, $f_factor = 1.6 ) {
	$units = array(
		86400*365.25 => array(' year', ' years'),
		86400*30 => array(' month', ' months'),
		86400*7 => array(' week', ' weeks'),
		86400 => array(' day', ' days'),
		3600 => array(' hour', ' hours'),
		60 => array(' minute', ' minutes'),
		1 => array(' second', ' seconds'),
	);

	if ( isset($GLOBALS['g_units']) && is_array($GLOBALS['g_units']) ) {
		$units = $GLOBALS['g_units'];
	}

	$timeAgo = array();

	$seconds = (int)$f_seconds;
	foreach ( $units AS $range => $unit ) {
		if ( 1 == $range || $seconds >= $range * $f_factor ) {
			is_array($unit) || $unit = array($unit, $unit);

			$last = count($timeAgo) == $f_size-1;
			$round = $last ? 'round' : 'floor';

			$num = $round($seconds / $range);
			$timeAgo[] = $num . $unit[(int)(1 != $num)];

			if ( $last ) {
				break;
			}

			$seconds -= $num * $range;
		}
	}

	$separator = isset($GLOBALS['g_separator']) ? $GLOBALS['g_separator'] : ', ';
	return implode($separator, $timeAgo);
}

?>