Possibly. I wouldn't even know where to begin.
> Because the problem is there are many "old" accepted answers, with high upvotes, that will always come up as number 1 or 2 in google searches.
Yeah, that's my concern. I can definitely edit anything tagged [php], due to having a gold [php] badge, and I think I can edit anything because I have a reputation higher than 10,000.
The hardest problem for me, here, is identifying these old accepted answers with high upvotes.
My general approach is something like this:
https://stackoverflow.com/questions/tagged/php+encryption?so...
https://www.google.com/search?q=site%3Astackoverflow.com+php...