I am trying to validate addresses input from users, where they give their street name, zip code, house number etc ...
The question is, how can I validate weather the address is valid?
The even better question would be, how can I check using the IP of the user, weather the input match the current country of the user or not, according to those informations I am gonna flash some validation errors.
Can I implement this in a Google Map for example?
Thanks
You can't.
There are simply too many edge cases, where addresses might seem wrongful, but are correct. Where I live some companies get their own zip code, also some roads do and some addresses does not have a town name.
If you want to be as precise as possible, you should ask the user to enter their address through a Google Maps auto complete field, as Google Maps knows a lot of the edge cases.
That being said, It's not accurate to check whether the users inputted address matches their origin country, as they can be behind a VPN. Also some IP addresses maps to another country than the user is actually in.