MapWithKeys

                            
<?php
 
namespace App\Http\Controllers;
 
use App\Models\Example;
use Illuminate\Support\Str;
 
class ExampleController extends Controller
{
    public function show($id)
    {
        $item = Example::findOrFail($id);
 
        $images = $item->images->mapWithKeys(function ($image) {
            return [$image->getExtension() => $image->getSize()];
        });
 
        return view("example.show", ["item" => $item, "images" => $images]);
    }
}