THE WORLD'S LARGEST WEB DEVELOPER SITE

PHP hypot() Function

❮ PHP Math Reference

Example

Calculate the hypotenuse of different right-angle triangles:

<?php
echo hypot(3,4) . "<br>";
echo hypot(4,6) . "<br>";
echo hypot(1,3) . "<br>";
echo sqrt(3*3+4*4);
?>
Run example »

Definition and Usage

The hypot() function calculates the hypotenuse of a right-angle triangle.

Tip: This function is equivalent to sqrt(x*x + y*y).


Syntax

hypot(x,y);

Parameter Description
x Required. Specifies the length of first side
y Required. Specifies the length of second side

Technical Details

Return Value: The length of the hypotenuse
Return Type: Float
PHP Version: 4.1+

❮ PHP Math Reference