Question

Is it possible to globalize an instance which has been declared in a Class?

For example:

<?php
   class Application
   {
      public $ioClass       = new Class();
      public $ioGlobalClass = new GlobalClass();

      public function __construct()
      {
          // constructor
      }
   }

   class Class 
   {
      public function __construct()
      {
          // constructor
      }

      public function doSomething()
      {
          // is this possible?
          global $ioGlobalClass;

          echo $ioGlobalClass->helloWorld();
      }
    }
 ?>

So can I do global $ioGlobalClass; in this example above?

Answer 1

I expect not if it hasn’t been instantiated anywhere. You might have more luck with a singleton:

public static $ioGlobalClass = new GlobalClass()

then:

Application::$ioGlobalClass->helloWorld();