PHP pow() Function

PHP Math Function

Definition and Usage

The pow() function returns x to the power of y.

Syntax

pow(x,y)
Parameter Description
x Required. A number.
y Required. A number.

Description

returns x of y Power of power. If possible, this function will return an integer.

If the power cannot be calculated, a warning will be issued, pow() will return false. Starting from PHP 4.2.0, pow() does not generate any warnings.

Example

<?php
echo pow(4,2);
echo pow(6,2);
echo pow(-6,2);
echo pow(-6,-2);
echo pow(-6,5.5);
?>

Output similar to:

16
36
36
0.0277777777778
-1.#IND

PHP Math Function