gmp_root

Function • Params and return types changed in PHP 8.0

Take the integer part of nth root.

PHP 5.3-5.5
PHP 5.6
Added
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

gmp_root Function synopsis

gmp_root(GMP|string|int $num, int $nth): GMP

Parameters

$num

TypeGMP|string|int

$nth

Typeint

The positive root to take of $num.

Return value

TypeGMP

The integer component of the resultant root, as a GMP number.

Changes to the gmp_root Function

PHP 8.0

  • Return type added: GMP
  • Parameter name of parameter #1 changed: $a to $num
  • Parameter type added for parameter #1 ($num): GMP|string|int
  • Parameter type added for parameter #2 ($nth): int
- gmp_root($a, $nth)
+ gmp_root(GMP|string|int $num, int $nth): GMP

PHP 5.6

  • Function added

gmp_root 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 No
PHP 5.4Unsupported No
PHP 5.3Unsupported No