# php arithmetic operators

PHP arithmetic operator are used to integer (numeric) value to perform basic operation like sum, multiplication, subtraction and division.

## PHP Supports all basic arithmetic operators :

• Subtract        -
• Multiply         *
• Division         /
• Modulus       %

lets understand use of arithmetic operator with an example in php.
we already know what is variable and how to assign value in to variable.

## ADD (+) arithmetic operator

First we take an example of addition of two numeric value in php.
here, we have declare two variable with integer value.

<?php

\$first = 5;
\$second = 2;

\$sum = \$first + \$second;
echo “sum = ” . \$sum;

?>

The output of example:
sum = 7

In above php addition example we have two variable \$first and \$second with numeric value 5 and 2 respectively.
The \$sum variable store the addition output of two variable \$first and \$second and then print answer of addition.

## Subtraction (-) arithmetic operator

Now, subtraction of two numeric value, just change the arithmetic operation minus (-) sign instead of plus (+) sign in above php example.

<?php

\$first = 5;
\$second = 2;

\$sub = \$first – \$second;
echo “subtraction = ” . \$sub;

?>

The output is:
subtraction = 3;

We can make all arithmetic operation such as multiplication, division just change the operator sign in above example.

## Multiplication (*) php example

<?php

\$first = 5;
\$second = 2;

\$mul = \$first * \$second;
echo “mul = ” . \$mul;

?>

The output is:
mul = 10;

## Division (/) operator php example

<?php

\$first = 10;
\$second = 2;

\$div = \$first / \$second;
echo “div = ” . \$div;

?>

The output is:
div = 5;