If you could remove one feature of php to help newbies what would it be? -

If you can remove a feature from PHP so that new programmers stop, prevent or otherwise help prevent bad habits or practices. Or, to stop them from falling into the trap, who can obstruct their development skills, what will happen and why?

Now, before closing votes, it does not look like open-end like you think it might be.

I am not purely asking what is the worst feature or which feature you want to remove purely arbitrarily. Yes, there can not be a right answer, but I suspect that there will be many similar answers that will provide me with a good idea of ​​some wrong things, even inadvertently. Class = "post-text" itemprop = "text">

Almost all php.ini . There is no reason for 90% of options, especially for those who include autoskeyping of input.