无法在REST服务器上获取请求标头

Question

Im using Slim Framework as an API. Im making a GET request to it. But I cannot get the headers. My PHP file looks like:

    require 'Slim/Slim.php';
    $app = new Slim();
    $app->get('/project/:id', add_authorize(), 'getProject');
    $app->run();
    function getProject($project_title) {
        //connect to database and return project details
    }

    function add_authorize() {
        return function (){
        $app = Slim::getInstance();     
        $charset = $app->request->headers->get('ACCEPT_CHARSET');
        };
    }

I get the response:

( ! ) Fatal error: Cannot access protected property Slim::$request in C:\wamp\www\server\device_api\index.php on line 23
Call Stack
#   Time    Memory  Function    Location
1   0.0010  248528  {main}( )   ..\index.php:0
2   0.0240  860056  Slim->run( )    ..\index.php:9
3   0.0240  878816  Slim_Route->dispatch( ) ..\Slim.php:1052
4   0.0240  878864  call_user_func:{C:\wamp\www\server\device_api\Slim\Route.php:387} ( )   ..\Route.php:387
5   0.0240  878944  {closure:C:\wamp\www\server\device_api\index.php:19-25}( )  ..\Route.php:387

I have tried absolutely everything but to no avail. I also tried getting headers directly with:

$device_id = $_SERVER['HTTP_DEVICE_ID'];

but this also failed. Any ideas how I can get a header?

Answer 1

I suggest to do the following and not wrap things in a closure:

require 'Slim/Slim.php';
$app = new Slim();
$app->get('/project/:id', add_authorize(), 'getProject');
$app->run();
function getProject($project_title) {
    //connect to database and return project details
}

function add_authorize() use ($app) {
    $charset = $app->request->headers->get('ACCEPT_CHARSET');
}