When to use a variable variable in PHP?

Question

I\'ve been developing in PHP for a while now, and I still have not had a task where I\'ve had to use variable variables. Can anyone give me examples where using them is a go

Answer 1

First off, it'd be a huge security concern were you to use user output for these purposes. Internals are the only valid use here.

Given that, I imagine it's for things like looping through various variables, or sending variables as parameters.

foreach($name in array('_GET','_POST','_REQUEST')) {
    array_map('stripslashes',$$name);
}