codeguy/php-the-right-way — pull request #27 by poundifdef (2012-07-08 19:47:59+00:00)
Title: add PBKDF2 and general hashing info

I thought it would be worth mentioning that there are other good password hashing functions which aren't bcrypt.

Also wanted to specifically link to this resource which does a great job describing password hashes, which includes PBKDF2 code for PHP.