Ora relativa PHP(italiano)

function timeElapsed($t) {
    $t = time() - $t;
    $tokens = array (
    31536000 => array('ann', 'o', 'i'),
    2592000 => array('mes', 'e', 'i'),
    604800 => array('settiman', 'a', 'e'),
    86400 => array('giorn', 'o', 'i'),
    3600 => array('or', 'a', 'e'),
    60 => array('minut', 'o', 'i'),
    1 => array('second', 'o', 'i')
    );
    foreach ($tokens as $unit => $text) {
        if ($t < $unit) continue;
        $numberOfUnits = floor($t / $unit);
        $suffix = $text[1];
        if($numberOfUnits > 1)
        $suffix = $text[2];
        return $numberOfUnits . ' ' . $text[0] . $suffix;
    }
}