How to implement such a format of the site?

Gentlemen, good evening. Interested in this question: how to realize such a website?
The issue is that when I choose in the upper pane, say, "Belarus", it sorts everything in Belarus, then when you choose, say, a "code" that displays a list with the codes of the selected country, the list is implemented in the form of references, not in the form of a table or something else.
In General, I would like to know what technologies are used (as I understand php and mysql)
As a similar database can be implemented (like know anything about php and mysql, but I'll never adjusts how it's done, I mean what tags, functions, etc.)
Thanks in advance for any replies)
June 8th 19 at 17:15
0 answer

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