Laravel : pass parameters on function on route

How about like this:

<?php Route::get('/{order}', array("as" => "ordered", "uses" => 'HomeController@ordered'), function() use ($order) { Session::put('order',$order') }); 

More detailed examples can be found here Anonymous functions Example #3 Inheriting variables from the parent scope

What is important here is to notice the use keyword. It lets you pass variables defined outside of your anonymous function.

Edit

My bad, its seems I misunderstood. Try it this way:

<?php Route::get('/{order}', array("as" => "ordered", "uses" => 'HomeController@ordered'), function($order) { Session::put('order',$order') }); 

Just Change to the following..........

Route::get('/{order}','HomeController@ordered'); 

And On HomeController............

 public function ordered($order){ ///////////////////your code here, use $order here }); 

Please follow this Route:

Route::get('/{order}','HomeController@ordered'); 

Controller: method of HomeController-

function ordered($order) { } 

you can also pass more than one parameters

Route:

Route::get('/{order}/{id}','HomeController@ordered'); 

Controller:

function ordered($order,$id) { } 

Better (5 years) late than never:

Route::get('/{order}', array("as" => "ordered", "uses" => 'HomeController@ordered'), function() { Session::put('order', request()->route('order')); });