'/sauna/filter/100/16/0/0'

'100/16/0/0'

array (
  0 => '100',
  1 => '16',
  2 => '0',
  3 => '0',
)

array (
  0 => 100,
  1 => 16,
)

array (
  'city_id' => 1,
  'price' => 20,
  'district' => 25,
)