Контроль чистоты поверхности

array(2) {
  [1200]=>
  string(50) "product_id=1200&quantity=1&category_id=142&to=cart"
  [363]=>
  string(49) "product_id=363&quantity=1&category_id=142&to=cart"
}

array(2) {
  [1200]=>
  string(50) "product_id=1200&quantity=1&category_id=142&to=cart"
  [363]=>
  string(49) "product_id=363&quantity=1&category_id=142&to=cart"
}