tag for the form field object. * @param mixed $value The form field value to validate. * @param string $group The field name group control value. This acts as as an array container for the field. * For example if the field has name="foo" and the group value is set to "bar" then the * full field name would end up being "bar[foo]". * @param JRegistry $input An optional JRegistry object with the entire data set to validate against the entire form. * @param JForm $form The form object for which the field is being tested. * * @return boolean True if the value is valid, false otherwise. * * @since 2.5 */ public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null) { $plugin = $element['plugin'] ?: JFactory::getApplication()->getParams()->get('captcha', JFactory::getConfig()->get('captcha', 0)); $namespace = $element['namespace'] ?: $form->getName(); // Use 0 for none if ($plugin === 0 || $plugin === '0') { return true; } else { $captcha = JCaptcha::getInstance($plugin, array('namespace' => (string) $namespace)); } // Test the value. if (!$captcha->checkAnswer($value)) { $error = $captcha->getError(); if ($error instanceof Exception) { return $error; } else { return new JException($error); } } return true; } }