Calculating time between now and timestamp in the fashion of GitHub commit listings.

time-ago-github.php

function timeAgo($dateStr) {
	$timestamp = strtotime($dateStr);

	$timeUnits = array(
		 array(60 * 60 * 24 * 365 , 'year'),
		 array(60 * 60 * 24 * 30 , 'month'),
		 array(60 * 60 * 24 * 7, 'week'),
		 array(60 * 60 * 24 , 'day'),
		 array(60 * 60 , 'hour'),
		 array(60 , 'minute')
	);
	 
	$today = time(); // Current unix time
	$since = $today - $timestamp;
 
	for ($i = 0, $j = count($timeUnits); $i < $j; $i++) {
		$seconds = $timeUnits[$i][0];
		$units = $timeUnits[$i][1];
 
		if (($count = floor($since / $seconds)) != 0) {
			break;
		}
	}
	 
	$single = ($units == 'hour') ? 'an ' : 'a ';
	$print = ($count == 1) ? $single . $units : "$count {$units}s";
	    
	return $print . ' ago';
}

This is wonderful