Token-key problem

I guess it has nothing to do with the token, but maybe with the PHP-dokument – here the snippet:

/**
* Returns a selectbox of available menus
* In case you need extra options in front add them to subtype array. Menus will be appended.
*
* @since 4.5
* @added_by Günter
* @param array $element
* @return string
*/
public function select_menu( array $element )
{
$locations = get_registered_nav_menus();
$menu_locations = array_flip( get_nav_menu_locations() );
$nav_menus = wp_get_nav_menus();

if( ! isset( $element[‘subtype’] ) || ! is_array( $element[‘subtype’] ) )
{
$element[‘subtype’] = array();
}

foreach( $nav_menus as $menu )
{
$key = wp_html_excerpt( $menu->name, 40, ‘…’ );
if( isset( $menu_locations[ $menu->term_id ] ) )
{
if( isset( $locations[ $menu_locations[ $menu->term_id ] ] ) )
{
$key .= ‘ (–> ‘ . wp_html_excerpt( $locations[ $menu_locations[ $menu->term_id ] ], 70, ‘…’ ) . ‘)’;
}
}

$element[‘subtype’][ $key ] = $menu->term_id;
}

return $this->select( $element );
}

Is here anything wrong?

Regards, Werner