How can set global variables? - Joomla! Forum - community, help and support

hello,
i'm trying write own joomla 2.5 component , modul. now, need set session-like global variables, can use in components, plugins , modules same way.

i've tryed write little 'system plugin', writes needed variables jsession via 'set' funktion. don#t seems work, because didn't results using print-r or echo inner plugin or other plugin/component/module.

where have set session variables correctly?

this works in joomla platform 12.3:

code: select all

    // write log text file
    $logcat      = basename(__file__);
    $log_options = array(
        'text_file'       => 'mylog.log',
   'text_file_path'    => jpath_base,
     );
     jlog::addlogger($log_options);

    $input   = new jinput;
    $session   = jfactory::getsession();
    // session start requires $input
    $session->initialise($input);
    // set session state active
    $session->start();
    $session->set('expire', '20');
    $msg   = '$_session = ' . print_r($_session, true);
    jlog::add($msg, jlog::info, $logcat);