How to add a search box in navigation menu in Genesis Sample Theme

[Ling]

I have followed the instructions from here: https://my.studiopress.com/documentation/snippets/navigation-menus/add-navigation-extras/

I have "Uncomment this block to add a search form to the navigation menu"

This is what I have pasted to my theme functions. php but I still have this error message: "Something went wrong. Your change may not have been saved. Please try again. There is also a chance that you may need to manually fix and upload the file over FTP."

Did I uncomment the block wrongly? I remove /* and */.

add_filter( 'wp_nav_menu_items', 'theme_menu_extras', 10, 2 );
/**
* Filter menu items, appending either a search form or today's date.
*
* @param string $menu HTML string of list items.
* @param stdClass $args Menu arguments.
*
* @return string Amended HTML string of list items.
*/
function theme_menu_extras( $menu, $args ) {
//* Change 'primary' to 'secondary' to add extras to the secondary navigation menu
if ( 'primary' !== $args->theme_location )
return $menu;
//* Uncomment this block to add a search form to the navigation menu
ob_start();
get_search_form();
$search = ob_get_clean();
$menu .= '<li class="right search">' . $search . '';
}

http://www.singaporeolevelmaths.com

[Ling]

add_filter( 'wp_nav_menu_items', 'theme_menu_extras', 10, 2 );
/**
* Filter menu items, appending either a search form or today's date.
*
* @param string $menu HTML string of list items.
* @param stdClass $args Menu arguments.
*
* @return string Amended HTML string of list items.
*/
function theme_menu_extras( $menu, $args ) {
//* Change 'primary' to 'secondary' to add extras to the secondary navigation menu
if ( 'primary' !== $args->theme_location )
return $menu;
//* Uncomment this block to add a search form to the navigation menu
ob_start();
get_search_form();
$search = ob_get_clean();
$menu .= '<li class="right search">' . $search . '';

return $menu;

}

Edit using FTP

[Ling]

Is there anyone who can assist me with customization of the search box within the navigation menu?

Mine looks ugly now.

Thanks.

[Author]

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