ZF3是否在调试器中构建或如何打开错误报告

is there a ZF3 way to turn on debugging mode? Or just to turn on printing errors on the screen? I was trying to add:

'debug' => true

to a config file but without any result. I can type:

ini_set("display_errors", 1);

in the index.php, but is it a proper way?

In the index.php file of skeleton app, we find the code

if (array_key_exists('APPLICATION_ENV', $_SERVER) &&
 $_SERVER['APPLICATION_ENV'] === 'development') {
    error_reporting(E_ALL);
    ini_set("display_errors", 1);
}

So to go into development mode you have to declare an environment variable, either in your development tools, in your .htaccess file or in your vthost. Then you can adjust your settings in /config/development.config.php