if( !empty($tags) ) { $BlogMetas .= "<meta property='article:tag' content='{$tags}'/>\n"; }
$BlogMetas .= "<meta property='article:published_time' content='".date('c', strtotime($page["page_create"]))."'/>\n";
if( !empty($page["page_update"]) ){ $BlogMetas .= "<meta property='article:modified_time' content='".date('c', strtotime($page["page_update"]))."'/>\n"; }
else { $BlogMetas .= "<meta property='article:modified_time' content='".date('c', strtotime($page["page_create"]))."'/>\n"; }