無法解決未定義的索引：outputBuffering in /vendor/slim/slim/Slim/App.php on line 252 error

Question

我在關注Destructy教程，在設置並測試出數據庫連接後，我得到以下錯誤：

到目前爲止，這是我的設置：

return [ 
    'settings' => [ 
     'displayErrorDetails' => true, 
    ], 
    'url' => 'http://localhost', 
    'db' => [ 
     'mysql' => [ 
      'host'  => 'localhost', 
      'dbname' => 'destructy', 
      'username' => 'username', 
      'password' => 'password', 
      'charset' => 'utf8', 
      'collation' => 'utf8_unicode_ci', 
      'prefix' => '', 
     ] 
    ], 
]; 

這是容器是如何定義的：

/*Set Slim up*/ 

$container = new \Slim\Container();//Ver si le afecta o no los paréntesis() 

$container['settings'] = function($c){ 
    return $c['config']->get('settings'); 
}; 

$container['config'] = function($c){ //c= current state of our container 
    return new \Noodlehaus\Config('../config/app.php');//We could pass more parameters ... as an array ['param1','param2','etc'] 
}; 
$container['view'] = function($c){//c= current state of our container 
    $view = new Slim\Views\Twig('../resources/views');//Ubicación de las vistas 

    //Ability to generate URLs to routes from within our views 
    $view->addExtension(new \Slim\Views\TwigExtension(
     $c['router'], 
     $c['config']->get('url') 
    )); 

    return $view; 
}; 
//base de datos: 
$container['db'] = function($c){ 
    //return new PDO('mysql:host=127.0.0.1;dbname=destructy','root','root'); 
    return new PDO(
     'mysql:host='.$c['config']->get('db.mysql.host').';dbname='.$c['config']->get('db.mysql.dbname'), 
     $c['config']->get('db.mysql.username'), 
     $c['config']->get('db.mysql.password')); 
}; 

$app = new Slim\App($container); 

require_once 'routes.php'; 

路線：

$app->get('/',function($request,$response,$args){ 
    echo 'Destructy - Home.'; 
    echo '<p style="color: darkblue">Welcome to the admin area</p>'; 
    echo '<p>Testing access to config parameters ...</p>'; 
    echo $this->config->get('db.mysql.host').'<br>'; 
    echo $this->config->get('url'); 

    /*Testing out DB connection*/ 
    var_dump($this->db); 

    $this->view->render($response,'home.twig'); 
}); 

$app->run(); 

有沒有人知道問題是爲了解決它？

Answer 1

你不能使用點語法來訪問的配置值，應該是這樣的：

$container['db'] = function($c){ 
    $conf = $c->db; 
    return new PDO(
     'mysql:host='.$conf['mysql']['host'].';dbname='.$conf['mysql']['dbname'], 
     $conf['mysql']['username'], 
     $conf['mysql']['password']; 
};