如何让raravel在午夜将数据库中的行设置为特定值？

I have a table in a mysql database and i want to every midnight set a row in that table to false.

How would i go about doing this?

You can setup a task to run at midnight and do whatever you want to do in that task. Check out the docs for task scheduling here.

Create a controller function and execute it at midnight. Lets say you have ScheduleController

class ScheduleController extends Controller {
  public function resetDataBase()
  {
    //write query here to change the table row.
    //You may use raw queries
  }
}

Then call this function in App\Console\Kernel.php

protected function schedule(Schedule $schedule)
{
  $schedule->call('\App\Http\Controllers\ScheduleController@resetDataBase')
    ->dailyAt('00:00');
}

On the server where you have hosted the application, you have to setup a crontab entry

* * * * * php /path/to/artisan schedule:run >> /dev/null 2>&1

Refer docs for more info.