ftok
ftok
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
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 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
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.ftok.php
