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

    ftok(string $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.

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