eg00

class IndexController extends Controller
{   
 public function product( $id)
    {
    ...
Session::set('previous_id', $id);
    ...
}

public function category($category)
{    
...
if(Session::has('previous_id')) 
    $previous_id= Session::get('previous_id');
... 
}
}

$date = new DateTime();
$newdate = clone $date;
$newdate = $newdate->add(new DateInterval('PT3M'));
$interval = $date->diff($newdate);