src/Zend/Filter/Compress/CompressAbstract.php
public function getOptions($option = null)
    {
        if ($option === null) {
            return $this->_options;
        }

        if (!array_key_exists($option, $this->_options)) {
            return null;
        }

        return $this->_options[$option];
    }
public function getOptions($option = null)
    {
        if ($option === null) {
            return $this->_options;
        }

        if (!array_key_exists($option, $this->_options)) {
            return null;
        }

        return $this->_options[$option];
    }
Returns one or all set options

@param string $option (Optional) Option to return
@return mixed