Multiply values in a Collection

Question

Hi all I have something like this and i want to multiply each object's "number". for example 2(first object number)x3(second object number)=6 (answer should be 6) does anyone know how to do it? The array is not always same.here it has 2 objects but it can be changed.

[{"id":7,"date":"2020-03-14","number":2},{"id":20,"date":"2020-03-15","number":3}]  

Updated answer(Working)

                     foreach ($studentDetail as $student){
                     $number = calendar::where('student_id','=',$student['id'])
                            ->where('date','>=',$jsonData->checkin)
                            ->where('date','<',$jsonData->checkout)
                            ->get();
                        Log::info($number );
                        $multiplied= $number ->reduce(function ($carry, $item) {
                             return $carry * $item->number;
                        }, 1);
                        Log::info($multiplied);
                        }

Answer 1

You can use reduce() method of Laravel collection

The reduce method reduces the collection to a single value, passing the result of each iteration into the subsequent iteration

$multiplied= $collection->reduce(function ($carry, $item) {
  return $carry * $item->number;
}, 1);