I’ve been working with php for a while now and have been tinkering with Slim recently. I’ve made plenty of local projects, but never uploaded any of them to any host. After uploading my latest project to a host for the first time, however, I am running in to some issues.
Nothing at all seems to work when uploaded on to the host. Everything works fine on my local server (XAMPP on Windows10 running PHP 7.0.9), however the remote host only gives a 500 HTTP error and several “class cannot be found” errors. Checking some logs, I found this:
[01-Mar-2017 16:30:28 Europe/London] PHP Fatal error: Uncaught Error: Class 'Citadel\Middleware\TrailingSlashMiddleware' not found in /home/mctoolbo/_CITADEL/files/containers/containers.php:51
Stack trace:
#0 /home/mctoolbo/_CITADEL/startup/app.php(38): require()
#1 /home/mctoolbo/_CITADEL/public/index.php(7): require('/home/mctoolbo/...')
#2 {main}
thrown in /home/mctoolbo/_CITADEL/files/containers/containers.php on line 51
[01-Mar-2017 16:30:33 Europe/London] PHP Fatal error: Uncaught Error: Class 'Citadel\Middleware\TrailingSlashMiddleware' not found in /home/mctoolbo/_CITADEL/files/containers/containers.php:51
Stack trace:
#0 /home/mctoolbo/_CITADEL/startup/app.php(38): require()
#1 /home/mctoolbo/_CITADEL/public/index.php(7): require('/home/mctoolbo/...')
#2 {main}
thrown in /home/mctoolbo/_CITADEL/files/containers/containers.php on line 51
After some research I found a post that said to change any require()s with include_onces. After doing that, it still throws a 500 HTTP error but now the error logs show a new, smaller error:
[01-Mar-2017 16:52:55 Europe/London] PHP Fatal error: Class 'Citadel\Middleware\Middleware' not found in /home/mctoolbo/_CITADEL/files/Middleware/TrailingSlashMiddleware.php on line 5
My TrailingSlashMiddleware.php file looks like this:
<?php
namespace Citadel\Middleware;
class TrailingSlashMiddleware extends Middleware {
function __invoke($request, $response, $next) {
$uri = $request->getUri();
$path = $uri->getPath();
if ($path != '/' && substr($path, -1) == '/') {
$uri = $uri->withPath(substr($path, 0, -1));
if($request->getMethod() == 'GET') {
return $response->withRedirect((string)$uri, 301);
}
else {
return $next($request->withUri($uri), $response);
}
}
return $next($request, $response);
}
}
Which is based on https://www.slimframework.com/docs/cookbook/route-patterns.html and extends the “main” middleware class, here:
<?php
namespace Citadel\Middleware;
class Middleware {
protected $container;
public function __construct($container) {
$this->container = $container;
}
}
I am adding the middleware in a containers.php file, which looks like this:
<?php
$container['db'] = function ($config) {
$db = $config['database'];
$pdo = new PDO("mysql:host=".$db['host'].";dbname=".$db['name'],$db['user'],$db['pass']);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
return $pdo;
};
$container['view'] = function ($container) {
$view = new \Slim\Views\Twig("../files/views", [
"cache" => false,
]);
$view->addExtension(new \Slim\Views\TwigExtension(
$container->router,
$container->request->getUri()
));
$twig = $view->getEnvironment();
$twig->addGlobal('session', $_SESSION);
return $view;
};
$container['home'] = function ($container) {
return new \Citadel\Controllers\Home($container);
};
$container['account'] = function ($container) {
return new \Citadel\Controllers\Account($container);
};
$container['user'] = function ($container) {
return new \Citadel\Controllers\User($container);
};
$app->add(new \Citadel\Middleware\TrailingSlashMiddleware($container));
$app->add(new \Citadel\Middleware\SessionSetMiddleware($container));
All of this works PERFECTLY when I test locally, however completely breaks when uploaded to a public host.
I’m no server expert, so I cannot determine whether or not it’s an issue with the code itself, or if I am doing something wrong for the type of server the host is using. For reference sake, I am using a small company named XenonHosting (http://xenonhosting.co.uk/) which uses Linux Arch KDE (Not a Linux guy, so I’m unsure if that’s relevant or even the correct way to write it). Both my local server and the remote one use the same php version, and I uploaded the site files exactly as they are on my local server.
Does ANYONE have any ideas as to what’s going on? I’ve been trying for several hours to figure this one out on my own, but I don’t know enough about Slim to pin-point the cause of this issue.