public static function getTypeValuesHTML()
{
global $REX;
$return = [];
/**
* prepare Opengraph from MetaInfo TypeValues
*/
if (self::$curArticle->getValue('art_open_graph_typevalues')) {
$typeValues = explode("\n", self::$curArticle->getValue('art_open_graph_typevalues'));
foreach ($typeValues as $typeValue) {
$typeValue = explode('|', $typeValue);
$return[] = '<meta property="' . trim($typeValue[0]) . '" content="' . trim($typeValue[1]) . '">';
}
}
return implode("\n\t", $return) . "\n\t";
}