Objects within objects

You can use objects inside other objects in the same as other variable types. For example, we could define a dogtag class and give each dog a dogtag object like this:

class dogtag {

      public $Words;

  }

  

  class dog {

      public $Name;

      public $DogTag;

  

      public function bark() {

          print "Woof!\n";

      }

  }

Accessing objects within objects is as simple as using -> again:

$poppy = new dog;
 $poppy->Name = "Poppy";
 $poppy->DogTag = new dogtag;
 $poppy->DogTag->Words = "My name is
  Poppy. If you find me, please call 555-1234";

Note that $DogTag variable is declared like any other, but needs to be created with "new" once $poppy has been created.

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