/** * Override the setPrivateKey method * * Override the parent method to store a binary representation of the private key as well. * * @param string $privateKey * @return \Zend\Service\ReCaptcha\MailHide */ public function setPrivateKey($privateKey) { parent::setPrivateKey($privateKey); /* Pack the private key into a binary string */ $this->_privateKeyPacked = pack('H*', $this->_privateKey); return $this; }