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 11.1 * @throws UnexpectedValueException if rule is invalid. */ public function test(SimpleXMLElement $element, $value, $group = null, JRegistry $input = null, JForm $form = null) { // Check for a valid regex. if (empty($this->regex)) { throw new UnexpectedValueException(sprintf('%s has invalid regex.', get_class($this))); } // Add unicode property support if available. if (JCOMPAT_UNICODE_PROPERTIES) { $this->modifiers = (strpos($this->modifiers, 'u') !== false) ? $this->modifiers : $this->modifiers . 'u'; } // Test the value against the regular expression. if (preg_match(chr(1) . $this->regex . chr(1) . $this->modifiers, $value)) { return true; } return false; } }