strict and functions
 

As some of you may know, I am learning PHP.

In the book I am using I came to a chapter about functions. It explained the use of strict.

I do not fully understand what strict does. From what I read (I'm probebly wrong) but it makes it so a variable cannot be used outside of a function. But if you do not add global to the beginning of a variable in a function doesnt that do the same thing?

What is strict actually for? Thanks in advance.

I've never seen "strict" used, but you are correct globals cannot be modified outside anyway. I suppose if you strict a variable that is passed by reference, it would not modify the original. Honestly though, I don't see a purpose to it. Maybe, in structures or classes it has more value due to the complexity of variable permissions.

I've never seen "strict" used, but you are correct globals cannot be modified outside anyway. I suppose if you strict a variable that is passed by reference, it would not modify the original. Honestly though, I don't see a purpose to it. Maybe, in structures or classes it has more value due to the complexity of variable permissions.

strict isn't even in the php manual...