load (); } static public function singleton () { if (self::$message !== FALSE) return self::$message; $class = __CLASS__; self::$message = new $class (); return self::$message; } public function save () { $_SESSION['CACHE_MESSAGES'] = serialize ($this->array); } public function load () { if (isset ($_SESSION['CACHE_MESSAGES'])) $this->array = unserialize ($_SESSION['CACHE_MESSAGES']); } public function addMessage ($message) { if (trim ($message) != '') $this->array [] = array (self::MESSAGE, $message); } public function addWarning ($warning) { if (trim ($warning) != '') $this->array [] = array (self::WARNING, $warning); } public function get ($type = self::HTML) { if (!array_key_exists ($this->cont, $this->array)) return NULL; $key = $this->cont++; if ($type == self::TEXT) return $this->array [$key][1]; if ($this->array [$key][0] == self::MESSAGE) return '