[Magento] Facebook Open Graph Snippets

head.phtml

<?php /* Open Graph Protocol for Facebook and SEO START */ ?>
<?php if(Mage::registry('current_product')): ?>
<?php $product = Mage::registry('current_product'); ?>
<meta property="og:title" content="<?php echo ($product->getName()); ?>" />
<meta property="og:type" content="product" />
<meta property="og:image" content="<?php echo $this->helper('catalog/image')->init($product, 'small_image')->resize(200,200);?>" />
<meta property="og:url" content="<?php echo Mage::registry('product')->getProductUrl(); ?>" />
<meta property="og:description" content="<?php echo strip_tags(($product->getShortDescription())); ?>" />
<meta property="og:site_name" content="<?php echo Mage::app()->getStore()->getName(); ?>" />
<?php elseif(Mage::registry('current_category')): ?>
<meta property="og:title" content="<?php echo $this->getTitle() ?>" />
<meta property="og:type" content="product.group" />
<meta property="og:url" content="<?php echo $this->helper('core/url')->getCurrentUrl();?>" />
<meta property="og:description" content="<?php echo strip_tags($this->getDescription()) ?>" />
<meta property="og:site_name" content="<?php echo Mage::app()->getStore()->getName(); ?>" />
<?php elseif((Mage::getSingleton('cms/page')->getIdentifier() == 'home' &&
Mage::app()->getFrontController()->getRequest()->getRouteName() == 'cms')) : ?>
<meta property="og:title" content="<?php echo $this->getTitle() ?>" />
<meta property="og:type" content="website" />
<meta property="og:url" content="<?php echo $this->helper('core/url')->getCurrentUrl();?>" />
<meta property="og:description" content="<?php echo strip_tags($this->getDescription()) ?>" />
<meta property="og:site_name" content="<?php echo Mage::app()->getStore()->getName(); ?>" />
<?php else: ?>
<meta property="og:title" content="<?php echo $this->getTitle() ?>" />
<meta property="og:type" content="article" />
<meta property="og:url" content="<?php echo $this->helper('core/url')->getCurrentUrl();?>" />
<meta property="og:description" content="<?php echo strip_tags($this->getDescription()) ?>" />
<meta property="og:site_name" content="<?php echo Mage::app()->getStore()->getName(); ?>" />
<?php endif; ?>
<?php /* Open Graph Protocol for Facebook and SEO END */ ?>