WordPress expanded allowed tags for wp_kses with iframe, forms, etc.

expanded_alowed_tags

function expanded_alowed_tags() {
	$my_allowed = wp_kses_allowed_html( 'post' );
	// iframe
	$my_allowed['iframe'] = array(
		'src'             => array(),
		'height'          => array(),
		'width'           => array(),
		'frameborder'     => array(),
		'allowfullscreen' => array(),
	);
	// form fields - input
	$my_allowed['input'] = array(
		'class' => array(),
		'id'    => array(),
		'name'  => array(),
		'value' => array(),
		'type'  => array(),
	);
	// select
	$my_allowed['select'] = array(
		'class'  => array(),
		'id'     => array(),
		'name'   => array(),
		'value'  => array(),
		'type'   => array(),
	);
	// select options
	$my_allowed['option'] = array(
		'selected' => array(),
	);
	// style
	$my_allowed['style'] = array(
		'types' => array(),
	);

	return $my_allowed;
}