配置lumen的log为daily模式

1.首先添加服务提供者类LogServiceProvider

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Monolog\Formatter\LineFormatter;
use Monolog\Handler\RotatingFileHandler;

class LogServiceProvider extends ServiceProvider
{
    /**
     * Configure logging on boot.
     *
     * @return void
     */
    public function boot()
    {
        $maxFiles = 5;

        $handlers[] = (new RotatingFileHandler(storage_path("logs/lumen.log"), $maxFiles))
            ->setFormatter(new LineFormatter(null, null, true, true));

        $this->app['log']->setHandlers($handlers);
    }

    /**
     * Register the log service.
     *
     * @return void
     */
    public function register()
    {
        // Log binding already registered in vendor/laravel/lumen-framework/src/Application.php.
    }
}

2.然后在bootstrap/app.php注册该服务提供者

$app->register(\App\Providers\LogServiceProvider::class);