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.

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

<?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;