ftok --
Convert a pathname and a project identifier to a System V IPC key
Syntax
int ftok ( string pathname, string proj )
The function converts the pathname of an existing
accessible file and a project identifier (proj)
into a
integer for use with for example
shmop_open() and other System V IPC keys. The
proj parameter should be a one character string.
On success the return value will be the created key value, otherwise
-1 is returned.
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Php ftok syntax tutorial
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