frontend\models\SignupForm::rules PHP Method

    public function rules()
    {
        return [[['mobile', 'captcha', 'password'], 'trim'], [['mobile', 'captcha', 'password'], 'required'], [['mobile'], 'match', 'pattern' => '/^1[3|4|5|7|8][0-9]{9}$/'], [['mobile'], 'unique', 'targetClass' => '\\common\\models\\User', 'message' => '该手机号已被注册！'], [['password'], 'match', 'pattern' => '/^\\S+$/'], [['password'], 'string', 'length' => [6, 32]], [['captcha'], 'captcha']];
    }