What Are Variables?

A variable is just like a container, which is used to store a changeable value. While running a program, the value of the variable is always changing.

The syntax to declare a variable is as follows:

keyword  variable-name

Example 05:

var myvariable

The above variable declaring is from JavaScript language

“War” is a keyword, “myvariable” is a variable name.

Example 06:

int num

The above variable declaring is from C++ language.

“int” is a keyword, “num” is a variable name.

Note:  In PHP, $ symbol is used to declare a PHP variable

$abc

“$” is a PHP variable symbol, “abc” is a variable name.