(PHP 4 >= 4.2.0, PHP 5, PHP 7)
Convert a pathname and a project identifier to a System V IPC key
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.
Returns:
On success the return value will be the created key value, otherwise -1 is returned.
See also:
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