ZF\Apigility\Admin\InputFilter\Authentication\DigestInputFilter::init PHP Method

    public function init()
    {
        $this->add(['name' => 'accept_schemes', 'validators' => [['name' => 'Callback', 'options' => ['callback' => function ($value) {
            if (!is_array($value)) {
                return false;
            }
            $allowed = ['digest', 'basic'];
            foreach ($value as $v) {
                if (!in_array($v, $allowed)) {
                    return false;
                }
            }
            return true;
        }]]], 'error_message' => 'Accept Schemes must be an array containing one or more' . ' of the values "basic" or "digest"']);
        $this->add(['name' => 'realm', 'error_message' => 'Please provide a realm for HTTP basic authentication']);
        $this->add(['name' => 'htdigest', 'validators' => [['name' => 'Callback', 'options' => ['callback' => function ($value) {
            return file_exists($value);
        }]]], 'error_message' => 'Path provided for htdigest file must exist']);
        $this->add(['name' => 'nonce_timeout', 'validators' => [['name' => Digits::class]], 'error_message' => 'Nonce Timeout must be an integer']);
        $this->add(['name' => 'digest_domains', 'error_message' => 'Digest Domains must be provided as a string']);
    }