PHP. Руководство по PHP. 2005
ftok
ftok
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().
Semaphore, Shared Memory and IPC Functions
msg_get_queue
