PHP hypot () function
Examples
Calculate different length of the hypotenuse of a right triangle:
<?php
echo hypot(3,4) . "<br>";
echo hypot(4,6) . "<br>";
echo hypot(1,3) . "<br>";
echo sqrt(3*3+4*4);
?>
echo hypot(3,4) . "<br>";
echo hypot(4,6) . "<br>";
echo hypot(1,3) . "<br>";
echo sqrt(3*3+4*4);
?>
Running instance »
Definition and Usage
hypot () function calculates the length of the hypotenuse of a right triangle.
Tip: This function is equivalent to sqrt (x * x + y * y).
grammar
hypot( x,y );
参数 | 描述 |
---|---|
x | 必需。规定第一条直角边的长度。 |
y | 必需。规定第二条直角边的长度。 |
technical details
return value: | Length of the hypotenuse. |
---|---|
Return type: | Float |
PHP version: | 4.1+ |
PHP Math Reference