hypot
(PHP 4 >= 4.1.0, PHP 5)
hypot --
Calculate the length of the hypotenuse of a right-angle triangle
Description
float
hypot ( float x, float y)
hypot() returns the length of the hypotenuse of a
right-angle triangle with sides of length x and
y, or the distance of the point
(x, y) from the origin.
This is equivalent to sqrt(x*x + y*y).