tag for the form field object. * @param mixed $value The form field value to validate. * @param string $group The field name group control value. This acts as as an array container for the field. * For example if the field has name="foo" and the group value is set to "bar" then the * full field name would end up being "bar[foo]". * @param object &$input An optional JRegistry object with the entire data set to validate against the entire form. * @param object &$form The form object for which the field is being tested. * * @return boolean True if the value is valid, false otherwise. */ public function test(&$element, $value, $group = null, &$input = null, &$form = null) { $params = JComponentHelper::getParams('com_contact'); $banned = $params->get('banned_subject'); foreach (explode(';', $banned) as $item) { if (JString::stristr($item, $value) !== false) return false; } return true; } }