Sxooter's super eazy, smooth and cheezy, fast and breezy way to look things up:
1: Install apache, the PHP and Postgresql docs, and htdig.
2: index your documentation
3: Profit!
hehe.
Seriously though, with the phrase searching in the 3.2beta htdig you can find exactly what you're looking for, plus you can search multiple documentation collections at once or restrict to just the one you want.
And I am one of those folks who reads the manual from front to back, just for fun...