citywebshop_cms/application/helpers/session_helper.php

<?php

class Session_helper {

	static function set($key, $val)
	{
		$_SESSION["$key"] = $val;
	}
	
	static function get($key)
	{
		return $_SESSION["$key"];
	}
	
	static function destroy()
	{
		session_destroy();
	}

}

?>