NAME
    PHP::Session - read / write PHP session files

SYNOPSIS
      use PHP::Session;

      my $session = PHP::Session->new($id);

      # session id
      my $id = $session->id;

      # get/set session data
      my $foo = $session->get('foo');
      $session->set(bar => $bar);

      # remove session data
      $session->unregister('foo');

      # remove all session data
      $session->unset;

      # check if data is registered
      $session->is_registered('bar');

      # save session data
      $session->save;

      # destroy session
      $session->destroy;

      # create session file, if not existent
      $session = PHP::Session->new($new_sid, { create => 1 });

DESCRIPTION
    PHP::Session provides a way to read / write PHP4 session files, with
    which you can make your Perl application session shared with PHP4.

    If you like Apache::Session interface for session management, there is a
    glue for Apache::Session of this module, Apache::Session::PHP.

OPTIONS
    Constructor "new" takes some options as hashref.

    save_path
        path to directory where session files are stored. default: "/tmp".

    serialize_handler
        type of serialization handler. Currently only PHP default
        serialization is supported.

    create
        whether to create session file, if it's not existent yet. default: 0

    auto_save
        whether to save modification to session file automatically. default:
        0

        Consider cases like this:

          my $session = PHP::Session->new($sid, { auto_save => 1 });
          $session->param(foo => 'bar');

          # Oops, you forgot save() method!

        If you set "auto_save" to true value and when you forget to call
        "save" method after parameter modification, this module would save
        session file automatically when session object goes out of scope.

        If you set it to 0 (default) and turn warnings on, this module would
        give you a warning like:

          PHP::Session: some keys are changed but not modified.

NOTES
    *   Array in PHP is hash in Perl.

    *   Objects in PHP are restored as objects blessed into
        PHP::Session::Object (Null class) and original class name is stored
        in "_class" key.

    *   Locking when save()ing data is acquired via exclusive "flock", same
        as PHP implementation.

    *   Not tested so much, thus there may be some bugs in
        (des|s)erialization code. If you find any, tell me via email.

TODO
    *   WDDX support, using WDDX.pm

AUTHOR
    Tatsuhiko Miyagawa <miyagawa@bulknews.net>

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

SEE ALSO
    the Apache::Session::PHP manpage, the WDDX manpage, the Apache::Session
    manpage, the CGI::kSession manpage