_value[$offset]); } public function offsetGet($offset) { return $this->_value[$offset]; } public function offsetSet($offset, $value) { $this->_value[$offset] = $value; } public function offsetUnset($offset) { unset($this->_value[$offset]); } public function count() { return count($this->_value); } public function getIterator() { return new \ArrayIterator($this->_value); } }