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sem_acquire(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. After processing a request, any semaphores acquired by the process but not explicitly released will be released automatically and a warning will be generated. Return ValuesReturns TRUE on success or FALSE on failure. |
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