zendframework/zf2 — pull request #2647 by ezimuel (2012-10-02 16:34:42+00:00)
Title: Fix/bcrypt: added the set/get BackwardCompatibility

I added the set/getBackwardCompatibility to Zend\Crypt\Password\Bcrypt to manage the old $2a$ prefix for the crypt() function of PHP.
If you set the backward compatibility to true the bcrypt output will always use $2a$ instead of the new $2y$ (introduced by PHP 5.3.7).
This change will fix the issue #2524.