$errorHandler = new Jasny\ErrorHandler();

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

$errorHandler = new Jasny\ErrorHandler();

$log = new Logger('test');
$log->pushHandler(new StreamHandler('path/to/your.log'));

// Log fatal errors, warnings and uncaught exceptions
$errorHandler->setLogger($log);

$errorHandler->logUncaught(E_PARSE | E_ERROR | E_WARNING | E_USER_WARNING);
$errorHandler->logUncaught(Exception::class);
$errorHandler->logUncaught(Error::class); // PHP7 only

use Relay\RelayBuilder;
use Jasny\HttpMessage\ServerRequest;
use Jasny\HttpMessage\Response;

$errorHandler = new Jasny\ErrorHandler();

$relay = new RelayBuilder();
$dispatcher = $relay->newInstance([$errorHandler->asMiddleware()]);

$response = $dispatcher((new ServerRequest())->withGlobalEnvironment(), new Response());

use Jasny\Router;
use Jasny\Router\Routes\Glob as Routes;
use Jasny\HttpMessage\ServerRequest;
use Jasny\HttpMessage\Response;

$router = new Router(new Routes(['/**' => ['controller' => '$1', 'id' => '$2']));

$errorHandler = new Jasny\ErrorHandler();
$router->add($errorHandler->asMiddleware());

$response = $dispatcher((new ServerRequest())->withGlobalEnvironment(), new Response());

ob_start();

$errorHandler = new Jasny\ErrorHandler();

$errorHandler->logUncaught(E_ERROR | E_RECOVERABLE_ERROR | E_USER_ERROR);

$errorHandler->onFatalError(function() {
    http_response_code(500);
    header('Content-Type: text/html');
    echo "<h1>An unexpected error occured</h1><p>The error has been logged.</p>";
}, true);

use Jasny\ErrorHandler;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;

// Rollbar error handler will log uncaught errors
Rollbar::init(array('access_token' => 'POST_SERVER_ITEM_ACCESS_TOKEN'));

$log = new Logger('test');
$log->pushHandler(new RollbarHandler(Rollbar::$instance));

$errorHandler = new ErrorHandler();

// Jasny error handler will only log caught errors
$errorHandler->setLogger($log);