/** * check shortcode */ public static function avartansliderExtShortcode($atts) { $a = shortcode_atts(array('alias' => false), $atts); if (!$a['alias']) { return __('You have to insert a valid alias in the shortcode', AVARTANSLIDER_TEXTDOMAIN); } else { return AvartansliderShortcode::avartansliderOutput($a['alias'], false); } }