//WordPress 后台新窗口打开“查看站点”
add_action( 'admin_bar_menu', 'fanly_basic_shatel_view', 999 );
function fanly_basic_shatel_view( $wp_admin_bar ) {
    $all_toolbar_nodes = $wp_admin_bar->get_nodes();
    foreach ( $all_toolbar_nodes as $node ) {
        if(in_array($node->id, ['site-name','view-site'])){
			$args = $node;
			$args->meta = ['target' => '_blank'];
			$wp_admin_bar->add_node( $args );
        }
    }
}