Problems with PHP hour and new tzdata. BUG?

[Martin Marques <martin@xxxxxxxxxxxxxxxxxxx>]

Hi all.

In Argentina we changed the timezone in December so a tzdata update was 
made.

System time is great, but PHP is giving the old time.

$ date +%z
-0200
$ echo "<?php echo date('Z')/3600 . \"\n\"; ?>"|php
-3

What's wrong?

I saw this behaviour on other distributions (debian, for example).