$value) { if ($value === self::NONE) { continue; } $result[$key] = $value; } return $result; } public function __construct($options) { $this->options = array(); foreach ($options as $key => $value) { $this->options[strtolower($key)] = $value; } } /** * (PHP 5 >= 5.0.0)
* Whether a offset exists * @link http://php.net/manual/en/arrayaccess.offsetexists.php * @param mixed $offset

* An offset to check for. *

* @return boolean true on success or false on failure. *

* The return value will be casted to boolean if non-boolean was returned. */ public function offsetExists($offset) { return true; } /** * (PHP 5 >= 5.0.0)
* Offset to retrieve * @link http://php.net/manual/en/arrayaccess.offsetget.php * @param mixed $offset

* The offset to retrieve. *

* @return mixed Can return all value types. */ public function offsetGet($offset) { $offset = strtolower($offset); return array_key_exists($offset, $this->options) ? $this->options[$offset] : self::NONE; } /** * (PHP 5 >= 5.0.0)
* Offset to set * @link http://php.net/manual/en/arrayaccess.offsetset.php * @param mixed $offset

* The offset to assign the value to. *

* @param mixed $value

* The value to set. *

* @return void */ public function offsetSet($offset, $value) { $this->options[strtolower($offset)] = $value; } /** * (PHP 5 >= 5.0.0)
* Offset to unset * @link http://php.net/manual/en/arrayaccess.offsetunset.php * @param mixed $offset

* The offset to unset. *

* @return void */ public function offsetUnset($offset) { unset($this->options[$offset]); } }