If your Slim Framework application does not have a route that matches the current HTTP request URI, the application invokes its Not Found handler and returns a HTTP/1.1 404 Not Found response to the HTTP client.
Each Slim Framework application has a default Not Found handler. This handler sets the Response status to 404, it sets the content type to text/html, and it writes a simple explanation to the Response body.
A Slim Framework application’s Not Found handler is a Pimple service. You can substitute your own Not Found handler by defining a custom Pimple factory method with the application container.
$c = new \Slim\Container(); //Create Your container
//Override the default Not Found Handler
$c['notFoundHandler'] = function ($c) {
return function ($request, $response) use ($c) {
return $c['response']
->withStatus(404)
->withHeader('Content-Type', 'text/html')
->write('Page not found');
};
};
//Create Slim
$app = new \Slim\App($c);
//... Your codeIn this example, we define a new notFoundHandler factory that returns a callable. The returned callable accepts two arguments:
\Psr\Http\Message\ServerRequestInterface instance\Psr\Http\Message\ResponseInterface instanceThe callable MUST return an appropriate \Psr\Http\Message\ResponseInterface instance.