      app/ ( )
   namespace Fogersp\SuperProject
 composer.json    autoload

...
"autoload": {
  "psr4": {
    "Fogersp\\SuperProject\\": "app"
  }
},
...


 ,     Fogersp\SuperProject      app/
,  Fogersp\SuperProject\DB\Entry     app/DB/Entry.php

     
composer dumpautoload
    .

            
include '../vendor/autoload.php';