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<?php
class MySession {
private static $_initiated = FALSE;
private static $_dataContainer = array();
public static function init() {
if (!self::$_initiated) {
session_start();
if (!isset($_SESSION['__data'])) {
$_SESSION['__data'] = [];
}
self::$_dataContainer = &$_SESSION['__data'];
}
self::$_initiated = TRUE;
}
private static function _getRealm() {
$backtrace = debug_backtrace();
while (count($backtrace) && isset($backtrace[0]['class']) && $backtrace[0]['class'] == get_class()) {
array_shift($backtrace);
}
if (!count($backtrace) || (!isset($backtrace[0]['class']))) {
throw new SessionRealmException('Session realm not provided');
}
return $backtrace[0]['class'];
}
public static function get($variable, $realm = NULL) {
if (!self::$_initiated) {
self::init();
}
if (!$realm) {
$realm = self::_getRealm();
}
if (!isset(self::$_dataContainer[$realm])) {
throw new SessionVariableException('Realm '.$realm.' doesn\'t exist');
}
if (!isset(self::$_dataContainer[$realm][$variable])) {
throw new SessionVariableException('Variable '.$realm.'::'.$variable.' not set');
}
return self::$_dataContainer[$realm][$variable];
}
public static function set($variable, $value, $realm = NULL) {
if (!self::$_initiated) {
self::init();
}
if (!$realm) {
$realm = self::_getRealm();
}
if (!isset(self::$_dataContainer[$realm])) {
self::$_dataContainer[$realm] = [];
}
return self::$_dataContainer[$realm][$variable] = $value;
}
}
?>
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