# CGI::Session::ID::incr - CGI::Session ID driver - perldoc - [phpMan]

## NAME
    [CGI::Session::ID::incr](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession%3A%3AID%3A%3Aincr/markdown) - [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown) ID driver

## SYNOPSIS
        use [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown);
        $session = [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)->new("id:Incr", undef, {
                                    Directory   => '/tmp',
                                    IDFile      => '/tmp/cgisession.id',
                                    IDInit      => 1000,
                                    IDIncr      => 2 });

## DESCRIPTION
    [CGI::Session::ID::incr](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession%3A%3AID%3A%3Aincr/markdown) is to generate auto incrementing Session IDs. Compare it with
    [CGI::Session::ID::md5](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession%3A%3AID%3A%3Amd5/markdown), where session ids are truly random 32 character long strings.
    [CGI::Session::ID::incr](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession%3A%3AID%3A%3Aincr/markdown) expects the following arguments passed to [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)->new() as the
    third argument.

    IDFile
        Location where auto incremented IDs are stored. This attribute is required.

    IDInit
        Initial value of the ID if it's the first ID to be generated. For example, if you want the
        ID numbers to start with 1000 as opposed to 0, that's where you should set your value.
        Default is 0.

    IDIncr
        How many digits each number should increment by. For example, if you want the first
        generated id to start with 1000, and each subsequent id to increment by 10, set *IDIncr* to
        10 and *IDInit* to 1000. Default is 1.

## LICENSING
    For support and licensing information see [CGI::Session](https://www.chedong.com/phpMan.php/perldoc/CGI%3A%3ASession/markdown)