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Convert a pathname and a project identifier to a System V IPC key (PHP 4 >= 4.2.0, PHP 5)
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.



Path to an accessible file.


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.