[NameNickHN]

> I don't know, I would google it

That's exactly what I would answer and that would exactly be the reason why most companies won't hire me.

[krapp]

If you'd answer that for everything than it might be a red flag, but i think as long as you can demonstrate actual competence, at least enough to be able to judge the quality and merit of what you're googling, then it shouldn't be a problem.

Google and SO are too valuable not to use sometimes, and for PHP, php.net is almost unavoidable.