'/sauna/filter/0/0/8/0/4/'
'0/0/8/0/4/'
array ( 0 => '0', 1 => '0', 2 => '8', 3 => '0', 4 => '4', )
array ( 0 => 8, 1 => 4, )
array ( 'city_id' => 1, 'district' => 4, )