pow

Function • Params and return types changed in PHP 8.0

Exponential expression.

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

pow Function synopsis

pow(mixed $num, mixed $exponent): object|int|float

Parameters

$num

Typemixed

The base to use

$exponent

Typemixed

The exponent

Return value

Typeobject|int|float

$num raised to the power of $exponent. If both arguments are non-negative integers and the result can be represented as an integer, the result will be returned with int type, otherwise it will be returned as a float.

PHP-Extensions may override the behaviour of this operation and make it return an object.

Changes to the pow Function

PHP 8.0

  • Return type added: object|int|float
  • Parameter name of parameter #1 changed: $base to $num
  • Parameter type added for parameter #1 ($num): mixed
  • Parameter type added for parameter #2 ($exponent): mixed
- pow($base, $exponent)
+ pow(mixed $num, mixed $exponent): object|int|float

pow 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