PsySH
debugging through a web server like Apache or nginx or PHP-FPM is also not supported. Debugging is only supported when running PHP scripts from the command line or through PHP's built-in web server.
変数の調査にはvar_dump()やLaravelでデフォルトで入っているddを使う
それ以上でもPsySHを使ってデバッグできるよという内容