How to define a variable in PHP

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PHP variables
A variable is a container used to store data like text , numbers and values. In PHP , a variable starts with a dollar($) sign followed by the variable name. An assignment operator (=) is the operator used to assign a value to a variable.

Variable Syntax

$variable name = value

Let’s take an example.

<?php

// how to declare a variable in PHP
$txt = "Hello World!";
$number = 10;

?>

Fro the example above, the $ sign starts and then the variable name is txt and an assignment operator (=) was used and the value Hello world was assigned to it.
That is how it works.

Example 2

<?php
//Add two numbers
$num= 20;
$numm=30;
$val = $num + $numm;
?>

Output :
50

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