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 :

  • Add               +
  • 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;

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