symfony/symfony — pull request #6252 by patrickallaert (2012-12-10 09:28:50+00:00)
Title: Fixed: HeaderBag::parseCacheControl() not parsing quoted zero correctly

When having a Cache-Control header like:

max-age="0"

```isset($match[2])``` is true but ```$match[2]``` containing: ```"0"```, it is evaluated
as ```false```. The result is that ```true``` will be set to "max-age" entry instead of ```"0"```.