Variables persist outside of loops?

Hi,

I had a quick question about using variables inside of loops.

I noticed that if create a variable inside a foreach loop that the variable still exists once i am outside of the loop. This seems a bit odd to me because in most of the other languages that i have used, variables created inside a loop only exist inside that loop, this way you can reuse variable names without fear of carrying data over from a variable used in an other loop.

for example. I'm currently writing a script to handle AD user creation, modification, disabling and deletion. for each of these i have a foreach loop that will loop through the list of users that apply to it. Inside the loop i might want to have a variable called $currentUser, but i wouldn't want for it to be possible for a variable assigned to $currentUser in the user creation loop to show up in the user modification or deletion loop.

Hope this makes sense

thanks