php 한글 메뉴얼 도움말 검색 사이트 Convert a pathname and a project identifier to a System V IPC key [function.ftok]

설명

int ftok ( string $pathname , string $proj )

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

인수

pathname: Path to an accessible file.
proj: Project identifier. This must be a one character string.

반환값

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

참고

shmop_open() - Create or open shared memory block
sem_get() - Get a semaphore id