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.

Related Functions

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Function bcsqrt:

BCMath Arbitrary Precision Mathematics Functions

Most used PHP functions