public function __unset($name)
{
if ($this->_allowModifications) {
unset($this->_data[$name]);
$this->_count = count($this->_data);
$this->_skipNextIteration = true;
} else {
/** @see Zend_Config_Exception */
require_once 'Zend/Config/Exception.php';
throw new Zend_Config_Exception('Zend_Config is read only');
}
}