pcntl_getcpuaffinity

Function • Added in PHP 8.4

Get the cpu affinity of a process.

PHP 5

PHP 7

PHP 8.0-8.1

PHP 8.2-8.3

Added

PHP 8.5

PHP 8.6

`pcntl_getcpuaffinity` Function synopsis

pcntl_getcpuaffinity(?int $process_id = null): array|false

Parameters

`$process_id`

OptionalType?intDefault valuenull

Return value

Typearray|false

Changes to the `pcntl_getcpuaffinity` Function

PHP 8.4

Function added

`pcntl_getcpuaffinity` Function Availability

PHP Version	Availability
PHP 8.6Upcoming Release	Yes
PHP 8.5Supported (Latest)	Yes
PHP 8.4Supported	Yes
PHP 8.3Security-Fixes Only	No
PHP 8.2Security-Fixes Only	No
PHP 8.1Unsupported	No
PHP 8.0Unsupported	No
PHP 7.4Unsupported	No
PHP 7.3Unsupported	No
PHP 7.2Unsupported	No
PHP 7.1Unsupported	No
PHP 7.0Unsupported	No
PHP 5.6Unsupported	No
PHP 5.5Unsupported	No
PHP 5.4Unsupported	No
PHP 5.3Unsupported	No