How did you make this filter (not the smart filter component) here?

Question

PHP

Hello. I am looking for a solution how did you make such a filter and display options for apartments? realty.tiangroup.su/catalog/residential-property
Please tell me. And then I'm just looking for about the same filter.
Here in this topic
If someone tells me how it is implemented on the first link, I will be very grateful.
Or if someone answers a general question by clicking on the second link.
It is very necessary to implement such a filter.
Thanks in advance.

Answer 1

Well this is a normal get request, what is there to do then?
Another question is how your backend is written - and there might be a complete ass

Answer 2

codepen.io > search > RANGE