这是我项目中的部分片段，希望能够帮助到你。如下：
{{{
//
$rules = array(
'Username' => 'required|alpha_dash|min:6|max:18|unique:users,username',
'EmailAddress' => 'required|email|unique:users,email',
'Password' => 'required|min:8|max:18|confirmed|different:Username',
'Password_confirmation'=>'required'
);

$validator = Validator::make(Input::all(),$rules);
if ($validator->fails())
{
Session::flash('old',Input::only('Username','EmailAddress'));
return Redirect::to('join')->withErrors($validator);
}
}}}