Lumen Debug Log not working as expected

Question

I'm using Lumen 5.3 and I'm not sure on how i should implement debug mode.

In .env, i have this:

APP_DEBUG=true

In my script I have this:

Log::debug("Test"); 

So it will log in storage/logs/lumen.log when i run the script which is right.

I have made the value of APP_DEBUG=false and yet the Log::debug line I put keeps logging in lumen.log. How to turn off the log in debug level or is any other way to implement what I'm expecting to happen?

Answer 1

Update for Lumen

Apologies I was not reading properly, for Lumen 5.3 you can override the logging inside bootstrap/app.php pushing your own log handler.

Add the following towards the bottom of your app.php file, before you return $app:

use Monolog\Logger;
use Monolog\Handler\StreamHandler;
use Monolog\Formatter\LineFormatter;
...
$app->configureMonologUsing(function($monolog) {
    $handler = new StreamHandler(storage_path('logs/lumen.log'), Logger::ERROR);
    $handler->setFormatter(new LineFormatter(null, null, true, true));
    $monolog->pushHandler($handler);

    return $monolog;
});

In the code example you will then only be logging ERROR levels. You will need to import the namespaces.

To disable logging completely, you can do the following

$app->configureMonologUsing(function($monolog) {
    $monolog->pushHandler(new NullHandler(Logger::DEBUG));

    return $monolog;
});

Leaving the original Laravel 5.3 answer

For laravel 5.3 the log level is configured inside app/config.php.

The default generally is

'log_level' => env('APP_LOG_LEVEL', 'debug'),

So if you change your APP_LOG_LEVEL inside the .env to something like error on your production server it will not log debug message sprinkled throughout the app.

Inside your .env

APP_LOG_LEVEL=error