PHP Variable Scope

开发者_Go百科

Is there a way to declare a variable so it is available in all functions. Basically I want to call: Global $varName; automatically for every function. And no, I can't use a constant.

I don't think its possible but wanted to ask anyway. Thanks! :D

---

That's pretty oldschool and not recommended. If you want to use variables whereever you want consider using sessions of passing through variables if you're on an object oriented tour ;)

---

There is a $GLOBALS variable and a globals keyword.Check out example 1 and 2 on this page in the documentation.

But using a global variable is usually a sign of bad structure in your code.

---

I don't think variables can be globally visible the way you want bnut functions are.

You can declare two functions to access you data : on for reading, one for writing.

But anyway beware : if you change it from many places you will have hard times understanding what's going on when faced with a bug !