$name == null) { if(!$this->id) { return null; } if($name == "adb_wohneinheit") { $this->adb_wohneinheit = new ADBWohneinheit($this->adb_wohneinheit_id); return $this->adb_wohneinheit; } $classname = ucfirst($name); $idfield = $name."_id"; $this->$name = new $classname($this->$idfield); if($this->$name->id) { return $this->$name; } else { return null; } } return $this->$name; } }