silverstripe/sapphire — pull request #758 by phalkunz (2012-08-30 10:33:24+00:00)
Title: BUG Fix wrong date conversion from PHP format 'y' to jquery date and back

While 'y' in PHP means 4 digits year (e.g. 2012), jquery date picker means 2 digits (e.g. 12). That's all fine until then but when you pass the 2 digit year value back to PHP it all goes awry.
For exmple, defatult date format in en_US is 'MMM d, y' so in jquery date picker it's something like this 'Aug 22, 12' and eventually PHP will convert that value to '0012-08-22' which completely wrong.