bcsqrt

Function • Params and return types changed in PHP 8.0

Get the square root of an arbitrary precision number.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

bcsqrt Function synopsis

bcsqrt(string $num, ?int $scale = null): string

Parameters

$num

Typestring

The operand, as a well-formed BCMath numeric string.

$scale

OptionalType?intDefault valuenull

Return value

Typestring

Returns the square root as a well-formed BCMath numeric string.

Changes to the bcsqrt Function

PHP 8.0

  • Return type added: string
  • Parameter name of parameter #1 changed: $operand to $num
  • Parameter type added for parameter #1 ($num): string
  • Parameter type added for parameter #2 ($scale): ?int
  • Parameter default value added for position #2 ($scale): null
- bcsqrt($operand, $scale)
+ bcsqrt(string $num, ?int $scale = null): string

bcsqrt Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes