useful recursive PHP functions

recursively ...

(PHP 3, PHP 4 )

bcsqrt -- Get the square root of an arbitrary precision number

string bcsqrt ( string operand [, int scale])

Return the square root of the operand. The optional scale parameter sets the number of digits after the decimal place in the result.

Example 1. bcsqrt() example


<?php

echo bcsqrt(2, 3); // 1.414

?>