Site based on Joomla. I have many pages where h1 header is mentioned as product detail and displayed based on product details through PHP. There are 2 files: default.php and view.html.php.

default.php :

<h1>Used <?php echo $this->CatName; ?> <?php echo $this->prodDet->prod_name;?> Toy for Sale </h1>

This correctly display the h1 tag. I want to generate meta title of the page and use this h1 output as generated in view.html.php. This line defines the title of the page :

$this->document->setTitle($title);

And this line defines header h1 :

"{$this->item->heading}";

Complete code :

protected function _prepareDocument()
{
  $app = JFactory::getApplication();
  $menus = $app->getMenu();
  $title = null;

  // Because the application sets a default page title,
  // We need to get it from the menu item itself
  $menu = $menus->getActive();

  if ($menu)
  {
    $this->params->def('page_heading', $this->params->get('page_title', $menu->title));
  }
  else
  {
    $this->params->def('page_heading', JText::_('COM_USEDCAR_DEFAULT_PAGE_TITLE'));
  }

  $title = $this->params->get('page_title', '');

  if (empty($title))
  {
    $title = $app->get('sitename');
  }
  elseif ($app->get('sitename_pagetitles', 0) == 1)
  {
    $title = JText::sprintf('JPAGETITLE', $app->get('sitename'), $title);
  }
    elseif ($app->get('sitename_pagetitles', 0) == 2)
  {
    $title = JText::sprintf('JPAGETITLE', $title, $app->get('sitename'));
  }

  $title = "{$this->item->heading}";
  $this->document->setTitle($title);

  if ($this->params->get('menu-meta_description'))
  {
    $this->document->setDescription($this->params->get('menu-meta_description'));
  }

  if ($this->params->get('menu-meta_keywords'))
  {
    $this->document->setMetadata('keywords', $this->params->get('menu-meta_keywords'));
  }

  if ($this->params->get('robots'))
  {
     $this->document->setMetadata('robots', $this->params->get('robots'));
  }
}

Output in title tag is heading. How to put this h1 tag output instead of $title?