PHP pow() Function

Definition and Usage

The pow () function is used to compute power of a certain number. It returns x^y calculation, also termed as x raised to y. PHP also provides "**" asexponentiation operator.

So, pow(x,y) returns x^y which is same as x**y

Syntax

pow ( number $base , number $exp ) : number

Parameters

Return Values

PHP pow() function returns base raised to power of exp. If both arguments are non-negative integers,the result is returned as integer, otherwise it is returned as a float.

PHP Version

This function is available in PHP versions 4.x, PHP 5.x as well as PHP 7.x.

Example

<?php
   $radius=5;
   echo "radius = " . $radius . " area = " . M_PI*pow(5,2);
?>

Output

This will produce following result −

radius = 5 area = 78.539816339745