These modules provide wrappers for the System V IPC family of functions. It includes semaphores, shared memory and inter-process messaging (IPC).
Semaphores may be used to provide exclusive access to resources on the current machine, or to limit the number of processes that may simultaneously use a resource.
| Platform | Url |
|---|---|
| PHP.net | https://www.php.net/manual/en/book.sem.php |
| Class | https://www.php.net/manual/en/class.sysvsemaphore.php |