public static function kses_tags() { if (!isset(self::$kses_tags)) { self::$kses_tags = wp_kses_allowed_html('post'); self::$kses_tags['iframe'] = array('align' => true, 'frameborder' => true, 'height' => true, 'width' => true, 'sandbox' => true, 'seamless' => true, 'scrolling' => true, 'srcdoc' => true, 'src' => true, 'class' => true, 'id' => true, 'style' => true, 'border' => true, 'list' => true); } return self::$kses_tags; }