inject traits

inject-traits.php

<?php

trait WantsAuthenticator {
  function injectAuthenticator(Authenticator $authenticator) {
    $this->authenticator = $authenticator;  
  }  
}
trait WantsCache {
  function injectCache(Cache $cache) {
    $this->cache = $cache;  
  }  
}
trait WantsDatabase {
  function injectDatabase(Database $database) {
    $this->database = $database;  
  }
}


class HomepagePresenter {
  use WantsAuthenticator, WantsDatabase;  

  private $authenticator, $database;
}

class ArticlePresenter {
  use WantsDatabase, WantsCache;  

  private $database, $cache;
}

To raději http://phpfashion.com/di-a-property-injection