// Check if nickname is valid
if (preg_match('/[' . getConfig('nickname_pattern') . ']{' . getConfig('nickname_len') . ',}/', postRequestParameter('nickname'), $array)) {
// Entered nickname is valid?
- $isValid = ($array[0] == postRequestParameter('nickname'));
+ $isValid = (($array[0] == postRequestParameter('nickname')) && (isNicknameUsed(postRequestParameter('nickname'))));
} // END - if
} // END - if
} // END - if