   #PHP Manual Semaphore, Shared Memory and IPC Functions Semaphore,
   Shared Memory and IPC Functions msg_get_queue

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                                     ftok

   (PHP 4 >= 4.2.0)
   ftok --  Convert a pathname and a project identifier to a System V IPC
   key

Description

   int ftok ( string pathname, string proj)

   The function converts the pathname of an existing accessible file and
   a project identifier (proj) into a integer for use with for example
   shmop_open() and other System V IPC keys. The proj parameter should be
   a one character string.

   On success the return value will be the created key value, otherwise
   -1 is returned.

   See also shmop_open() and sem_get().
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