Laravel Controller

AdminDefinitionsController.php

 public function store(DefinitionsCreateRequest $request)
    {
        $input = $request->all();

        $input['surveyor_id'] = Auth::id();

        $quantity = $request->input('quantity');
        $samples = 0;
        if($quantity <= 999){
            $samples = 3;
        }
        elseif($quantity >= 1000 && $quantity <= 4999){
            $samples = 5;
        }
        elseif($quantity >= 5000){
            $samples = 7;
        }
        $input['samples_required'] = $samples;

        $definition = Definition::create($input);

        $definition_id = $definition->id;

        // sample
        $data = [
            'property_id' => $request->property_id,
            'surveyor_id' => Auth::id(),
            'samples_required' => $samples,
            'definition_id' => $definition_id,
            'description_id' => $request->description_id,
        ];

        $property_id = $request->property_id;


        //does property record exist?
        if(Sample::where('property_id', '=', $property_id)->exists()) {

            $i = 1;
            $j = DB::table('samples')
                ->where('property_id', '=', $property_id)
                ->max('counter');

            while($i <= $samples) {

                $k = $i + $j;

                $data['counter'] = $k;
                Sample::create($data);

                $i++;
            }
        }

        else{
            $i = 1;

            while($i <= $samples) {
                $data['counter'] = $i;
                Sample::create($data);

                $i++;
            }
        }

        return redirect('/surveyor/define-ha');
    }