Question about a website for iSro stats.

I'm new to website coding and I wanted to build a website like Rev6/m3stats.
how dose these websites get players info (set,weapon,unique kills) and server info?

I want to try to make a website that works the same for fun and to learn coding.

Thanks in advance

If I recall correctly rev6 used Agbot to gain player informations/unique kills etc..
From what I know they did not log in characters on their own. Instead they were using Agbots from other players to gain their information.

M3stat on the other hand used own characters to track player information etc.. But I do not know what tool they were using. Maybe an own tool or phBot, SBot etc..

Will be good for isro, we need that system..