TIMEDIFF() in Laravel

You can apply TIMEDIFF using this Raw Expression https://laravel.com/docs/7.x/queries#raw-expressions

\App\User::selectRaw("*, TIMEDIFF(created_at,updated_at) as diff")->first();

Or you can use carbon

https://carbon.nesbot.com/docs/#api-difference

https://carbon.nesbot.com/docs/#api-humandiff

You can use native sql function in selectRaw() based on your database to get the desired result. For MYSQL =>

selectRaw('TIMESTAMPDIFF(minute, start_date, end_Date) as duration')

However if you want to get it through model you can use

class Project extends Model
{
	public function getDifferenceInMinutes() {
        $from = \Carbon\Carbon::parse($this->start_date);
        $to = \Carbon\Carbon::parse($this->end_date);
    
        $diff_in_minutes = $to->diffInMinutes($from);
    
        return $diff_in_minutes;
    }
}

Note: the start_date and end_date are columns in your database table that corresponds to Project Model.

Now in your controller you can use

$project = Project::find(1);
dd($project->getDifferenceInMinutes());