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 switch($userName){
                case'1':{
                    $view = new view("application/view/pc/number/number_one.php");
             }
                case '2':{
                    $view = new view("application/view/pc/number/number_two.php");
                }
                case'3':{
                    $view = new view("application/view/pc/number/number_three.php");
                }
                case '4':{
                    $view = new view("application/view/pc/number/number_four.php");
                }
            }

注意：

‘1’：是需要匹配的名字。