/**
* Start user session.
*
* Note: This is intended to be called only from lib/setup.php!
*/
public static function start()
{
global $CFG, $DB;
if (isset(self::$sessionactive)) {
debugging('Session was already started!', DEBUG_DEVELOPER);
return;
}
self::load_handler();
// Init the session handler only if everything initialised properly in lib/setup.php file
// and the session is actually required.
if (empty($DB) or empty($CFG->version) or !defined('NO_MOODLE_COOKIES') or NO_MOODLE_COOKIES or CLI_SCRIPT) {
self::$sessionactive = false;
self::init_empty_session();
return;
}
try {
self::$handler->init();
self::prepare_cookies();
$newsid = empty($_COOKIE[session_name()]);
self::$handler->start();
self::initialise_user_session($newsid);
self::check_security();
} catch (\Exception $ex) {
@session_write_close();
self::init_empty_session();
self::$sessionactive = false;
throw $ex;
}
self::$sessionactive = true;
}
/**
* Start user session.
*
* Note: This is intended to be called only from lib/setup.php!
*/
public static function start() {
global $CFG, $DB;
if (isset(self::$sessionactive)) {
debugging('Session was already started!', DEBUG_DEVELOPER);
return;
}
self::load_handler();
// Init the session handler only if everything initialised properly in lib/setup.php file
// and the session is actually required.
if (empty($DB) or empty($CFG->version) or !defined('NO_MOODLE_COOKIES') or NO_MOODLE_COOKIES or CLI_SCRIPT) {
self::$sessionactive = false;
self::init_empty_session();
return;
}
try {
self::$handler->init();
self::prepare_cookies();
$isnewsession = empty($_COOKIE[session_name()]);
if (!self::$handler->start()) {
// Could not successfully start/recover session.
throw new \core\session\exception(get_string('servererror'));
}
self::initialise_user_session($isnewsession);
self::check_security();
// Link global $USER and $SESSION,
// this is tricky because PHP does not allow references to references
// and global keyword uses internally once reference to the $GLOBALS array.
// The solution is to use the $GLOBALS['USER'] and $GLOBALS['$SESSION']
// as the main storage of data and put references to $_SESSION.
$GLOBALS['USER'] = $_SESSION['USER'];
$_SESSION['USER'] =& $GLOBALS['USER'];
$GLOBALS['SESSION'] = $_SESSION['SESSION'];
$_SESSION['SESSION'] =& $GLOBALS['SESSION'];
} catch (\Exception $ex) {
self::init_empty_session();
self::$sessionactive = false;
throw $ex;
}
self::$sessionactive = true;
}
