sem_release

(PHP 4, PHP 5, PHP 7, PHP 8)

sem_release — Release a semaphore

Description

sem_release(SysvSemaphore $semaphore): bool

sem_release() releases the semaphore if it is currently acquired by the calling process, otherwise a warning is generated.

After releasing the semaphore, sem_acquire() may be called to re-acquire it.

Parameters

semaphore: A Semaphore as returned by sem_get().

Return Values

Returns true on success or false on failure.

Changelog

Version	Description
8.0.0	`semaphore` expects a SysvSemaphore instance now; previously, a resource was expected.

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