Podręcznik PHP
Poprzedni |  | Następny

# sem_acquire

(PHP 3 >= 3.0.6, PHP 4, PHP 5)

sem_acquire -- Acquire a semaphore

## Description

bool sem_acquire ( resource sem_identifier )

sem_acquire() blocks (if necessary) until the semaphore can be acquired. A process attempting to acquire a semaphore which it has already acquired will block forever if acquiring the semaphore would cause its maximum number of semaphore to be exceeded. sem_identifier is a semaphore ressource, obtained from sem_get().

Zwraca `TRUE` w przypadku sukcesu, `FALSE` w przypadku porażki.

After processing a request, any semaphores acquired by the process but not explicitly released will be released automatically and a warning will be generated.

See also sem_get(), and sem_release().

Poprzedni | Spis treści | Następny
msg_stat_queue | Początek rozdziału | sem_get