laravel4cookbook

Packages 145
35 class Archiver implements ArchiverInterface
36 {
37 protected $provider;
38
39 public function __construct(
40 EntryProviderInterface $provider
41 )
42 {
43 $this->provider = $provider;
44 }
45
46 // ...
47 }
48
49 $database = new Database();
50 $provider = new EntryProvider($database);
51 $archiver = new Archiver($provider);
This shallowly represents a dependency (injection) chain. The last three lines are where the problem
starts to become clear; the more we abstract our dependencies, the more “bootstrapping” code needs
to be done every time we need the Archiver class.
We could abstract this by using Laravel 4’s IoC container:
1