Own ad server

Question

PHP

“Growed up” to the need for your own ad server.
I have never done anything like this, so I need the help of the audience.
Because don't know how they work, some of the questions may seem silly.
Wishlist:
1. PHP
2. preferably geolocation
3. advertising depending on the type of page (passed as a parameter in the url)

everything seems to be ...

Answer 1

Check out OpenX

Answer 2

Maybe you should think about creating your own advertising network on a platform like Bannerbank (http://www.bannerbank.ru/)? This one came to mind offhand, but if you search, there are others ...