ftok
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
ftok — Convert a pathname and a project identifier to a System V IPC key
Description
$filename
, string $project_id
): int
The function converts the filename
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
-
filename
-
Path to an accessible file.
-
project_id
-
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.