some backlink checker on internet not work correctly, i just do it by myself. my background ,I 'm developer for pc game. i know php a little. but i do not know where to start to develop a backlink checker or serp position checker. here is my think.simulate browser to type a keyword and get serp information from google or yahoo.save it to a file or memory.and use text parser to find page item that link to my site. it is very not specific, just a idea. anyone give a guide to do this?
If you want to find backlinks you're going to need to download and parse the whole internets - that could take awhile Are you sure there isn't a tool already available, such as Google or Yahoo sitemaps...
Yeah, you could parse the search engine results pretty easily, the plan you outlined in you first post is pretty much what I'd do if I were doing this. I'm pretty sure you can already get good enough stats from Google sitemaps and a decent stats program such as awStats, Google Analytics, Statcounter etc.. all of those sites/programs will tell you who's linking to you. Good luck with it.