gmp_sign

Function • Params and return types changed in PHP 8.0

Sign of 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

gmp_sign Function synopsis

gmp_sign(GMP|string|int $num): int

Parameters

$num

TypeGMP|string|int

Either a GMP object, or a numeric string provided that it is possible to convert the latter to an int.

Return value

Typeint

Returns 1 if $num is positive, -1 if $num is negative, and 0 if $num is zero.

Changes to the gmp_sign Function

PHP 8.0

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

gmp_sign 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