Helper for passing data between otherwise segregated Views.
It's called Placeholder to make its typical usage obvious, but can be used just as easily for non-Placeholder things. That said, the support for this is only guaranteed to effect subsequently rendered templates, and of course Layouts.
Retrieve container registry from Placeholder\Registry, or create new one and register it.
__invoke(string $name) : \Zend\View\Helper\Placeholder\Container\AbstractContainer
getRegistry() : \Zend\View\Helper\Placeholder\Registry
getView() : null | \Zend\View\Renderer\RendererInterface
setView(\Zend\View\Renderer\RendererInterface $view) : \Zend\View\Helper\AbstractHelper
$items : array
$registry : \Zend\View\Helper\Placeholder\Registry