dodanie zarejestrowanych rozmiarów images do panelu administratora WP

//set to WP admin panel all registered sizes of img
add_filter( 'image_size_names_choose', 'ml_custom_image_choose' );
function ml_custom_image_choose( $args ) {

	global $_wp_additional_image_sizes;

	// make the names human friendly by removing dashes and capitalising
	foreach( $_wp_additional_image_sizes as $key => $value ) {
		$custom[ $key ] = ucwords( str_replace( '-', ' ', $key ) );
	}

	return array_merge( $args, $custom );
}