mtb_dcatadmin_plus/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //添加自定义辅助函数
        require_once __DIR__.'/../helpers.php';

    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //把SQL输出到日志中
//        if ($this->app->environment('local')) { // 仅在本地环境启用
//            DB::listen(function ($query) {
//                // 格式化 SQL 语句
//                $sql = $query->sql;
//                foreach ($query->bindings as $binding) {
//                    $sql = preg_replace('/\?/', "'" . addslashes($binding) . "'", $sql, 1);
//                }
//                // 输出到控制台
//                //dump($sql . ' [' . $query->time . 'ms]');
//                //输出到log
//                Log::info($sql . ' [' . $query->time . 'ms]');
//            });
//        }


    }
}