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Variables In PHP

In this article, we will discuss variables in PHP.

Software Requirement

Before you start reading this tutorial, you should make sure that: -

Before you go ahead, it is required that you should know the basics of HTML.

A variable is a container for storing information in memory.

A variable is declared like

<?php $variable_name;?>

A variable name starts with a dollar ($) sign
First character in the variable name should be either the alphabet or underscore (_)
Numbers, alphabets, and underscore are the permissible characters in the variable name
No special characters are allowed for variable name
Spaces are not allowed between variables
Variables are case sensitive

We can initialize a variable like: -

<?php		
$customer_name = 'google'; 		
?>

We can assign a value in a variable later after declaration.

<?php
  $customer_name;
  $customer_name = 'google'; 
?>

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