public function __construct()
{
parent::__construct();
}
public function __construct($wanted_keys = array())
{
// Setup the array of wanted keys - we're assuming that we'll only want
// a subset in general so always do this rather than bother to test if
// wanted_keys is empty as there is little overhead in the foreach loop
// if it is
foreach ($wanted_keys as $key) {
$this->_wanted_keys[$key] = true;
}
$this->_want_all = empty($this->_wanted_keys) ? true : false;
parent::__construct();
}
