How long ago did PHP get

// How long ago 
 function formatDate($time)
    {
    
        if (!$time)
            return false;
        $fdate = '';
        $d = time() - intval($time);
        $ld = $time - mktime(0, 0, 0, 0, 0, date('Y')); // Derived year 
        $md = $time - mktime(0, 0, 0, date('m'), 0, date('Y')); // Have a moon 
        $byd = $time - mktime(0, 0, 0, date('m'), date('d') - 2, date('Y')); // The day before yesterday 
        $yd = $time - mktime(0, 0, 0, date('m'), date('d') - 1, date('Y')); // yesterday 
        $dd = $time - mktime(0, 0, 0, date('m'), date('d'), date('Y')); // today 
        $td = $time - mktime(0, 0, 0, date('m'), date('d') + 1, date('Y')); // Tomorrow, 
        $atd = $time - mktime(0, 0, 0, date('m'), date('d') + 2, date('Y')); // The day after tomorrow 
        if ($d == 0) {
    
            $fdate = ' just ';
        } else {
    
            switch ($d) {
    
                case $d < $atd:
                    $fdate = date('Y year m month d Japan ', $time);
                    break;
                case $d < $td:
                    $fdate = ' The day after tomorrow ' . date('H:i', $time);
                    break;
                case $d < 0:
                    $fdate = ' Tomorrow, ' . date('H:i', $time);
                    break;
                case $d < 60:
                    $fdate = $d . ' Seconds ago ';
                    break;
                case $d < 3600:
                    $fdate = floor($d / 60) . ' Minutes ago ';
                    break;
                case $d < $dd:
                    $fdate = floor($d / 3600) . ' Hours before ';
                    break;
                case $d < $yd:
                    $fdate = ' yesterday ' . date('H:i', $time);
                    break;
                case $d < $byd:
                    $fdate = ' The day before yesterday ' . date('H:i', $time);
                    break;
                case $d < $md:
                    $fdate = date('m month d Japan  H:i', $time);
                    break;
                case $d < $ld:
                    $fdate = date('m month d Japan ', $time);
                    break;
                default:
                    $fdate = date('Y year m month d Japan ', $time);
                    break;
            }
        }
        return $fdate;
    }