Global Variable

A global variable is one that can be accessed from anywhere in the programming.

Each time when you declare a global variable you must keep it separate identity from the local variable because if you declared a variable as global and at the same time declared a variable with the same name as local one you simply create a logical error, so try to keep proper identification between global and local variables.

Scope of Global Variable

PHP Variables

In general term

" A variable is a character or symbol that represents a certain value."

Suppose

A = 5

B = 2

Here
A and B are two variables
Variable A holds value 5
Variable B holds value 2

Types of PHP Variables

 Most common types of variables are given below.

1. Local variables
2. Global variables
3. Static variables
4. Function parameters