return number with swedish ordinal

swedish_ordinal.php

<?php
/**
 * Return swedish ordinal
 * eg 1:a or 19:e
 * Not needed if this is available: http://www.php.net/manual/en/class.numberformatter.php
**/
function theme_slug_swedish_ordinal($number) {
	$last = substr($number, -1);
	if ($last <= 2)
		return $number . ':a';
	else
		return $number . ':e';
}
?>