ftok

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

ftok ¡ª Convert a pathname and a project identifier to a System V IPC key

Description

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.

Parameters

pathname

Path to an accessible file.

proj

Project identifier. This must be a one character string.

Return Values

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

See Also

• shmop_open() - Create or open shared memory block

• sem_get() - Get a semaphore id

¡û Semaphore Functions

msg_get_queue ¡ú

Licensed under the Creative Commons Attribution License v3.0 or later.

https://secure.php.net/manual/en/function.ftok.php