# sysvmsg

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.sysvmessagequeue.php         |