$tag_name = str_replace('google_plus_', 'itemprop:', $tag_name);
if ($tag_name == 'itemprop:publisher') {
$tag_name = 'publisher';
$tag_name = str_replace('google_plus_', 'itemprop:', $tag_name);
if ($tag_name == 'itemprop:publisher') {
$tag_name = 'publisher';