'/sauna/filter/0/9/4/0/0/'
'0/9/4/0/0/'
array ( 0 => '0', 1 => '9', 2 => '4', 3 => '0', 4 => '0', )
array ( 0 => 9, 1 => 4, )
array ( 'city_id' => 1, 'district' => 4, )