public function captcha()
{
$cfg = Config::get('app/login/captcha');
$cap = new Captcha();
$cap->width = $cfg['width'];
$cap->height = $cfg['height'];
$cap->maxWordLength = $cfg['words'];
$cap->minWordLength = $cfg['words'];
$cap->fontSize = $cfg['font_size'];
$text = null;
$cap->CreateImage($text);
Auth::setCaptcha($text);
die;
}
public static function getLoginUserName()
{
$u = Auth::instance()->getLoginInfo();
return $u['name'];
}