BC Math Functions

bcsqrt

Get the square root of an arbitrary precision number

Description

string bcsqrt ( string $operand [, int $scale = 0 ] )

Return the square root of the operand.

Parameters

operand: The operand, as a string.
scale: This optional parameter is used to set the number of digits after the decimal place in the result. If omitted, it will default to the scale set globally with the bcscale function, or fallback to 0 if this has not been set.

Return Values

Returns the square root as a string, or NULL if operand is negative.

Examples

Example #1 bcsqrt example


<?php

echo bcsqrt('2', 3); // 1.414

?>

See Also

bcpow