I have PHP function that looks like this, and I use it to change assignee of a certain task to employee that was chosen to be replacement for that employee in given period. That is I have holiday period in which a person that is on holiday gets their tasks replaced from them to their replacement colleague and it works like this:

 public function checkUnfinishedTasksInPeriod(Request $request) {
        try {

            $id = $request->creator;
            $todayDate = date('Y-m-d');

            $holidaysData = Holidays::where('employee_replacement_id', +$id)
                ->where('date_from', '<=', $todayDate)
                ->where('date_to', '>=', $todayDate)
                ->where('status', 'director_approved')
                ->get()
                ->toArray(); 

            foreach($holidaysData as $data) {
                $date_from = $data['date_from'];
                $date_to = $data['date_to'];
                $user_id = $data['user_id'];

                Tasks::where('assigned', +$user_id)
                    ->whereIn('status', ['todo', 'inprogress'])
                    ->whereBetween('deadline', [$date_from, $date_to])
                    ->where('type', 'task')
                    ->where('backlog', false)
                    ->update(['assigned' => +$id]);
            }

            $output = [
                'type' => 'success',
                'message' => 'Success',
                'data'=> null
            ];

            echo json_encode($output);
        } catch (Exception $e) {
            var_dump($e->getMessage());
            var_dump($e->getLine());
        }
    }

But for some reason my Tasks collection in MongoDB doesn’t get updated. I have tried multiple different solutions and researched a lot. Does somebody know what is the problem ?

I have tried multiple different functions in which I used directly MongoDB syntax, but to no avail. I have researched is there some problem with foreach and update in PHP, is there a problem with eloquent and foreach and so on.