bcsqrt
PHP 4, PHP 5, PHP 7, PHP 8
bcsqrt - Get the square root of an arbitrary precision number
bcsqrt(
string$num,
[int|null$scale = null] ): string
Return the square root of the num.
Parameters
- num
-
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 num is negative.
Changelog
| Version | Description |
| 8.0.0 | scale is now nullable. |