bcsqrt
(PHP 4, PHP 5, PHP 7)
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() - Raise an arbitrary precision number to another
← bcscale
bcsub →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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