Wow, some radical changes are being proposed for PHP 6.0, some of which are
Remove register_globals completely
Remove magic_quotes_*
Remove safe_mode
Remove some stuff that has been marked deprecated since PHP 3/4
Remove various function aliases
One thing is for sure, this means people will have to change their code radically in order for it to work on php 6.0 …..
Should be interesting to see how things shape up