Hidden page wp-admin [closed]

Question

I have now updated the code and added this

remove_submenu_page( $menu_slug, $submenu_slug )

function so the page can be accessed even when hidden.

    function ccms_developer_theme_menu() {

    $options = get_option('ccms_developer_options');

    if( $options['show_admin_dev'] ==1 )
        $show_dev = 1;
    else
        $show_dev = 0;

    add_submenu_page(
            'ccms',                     // The ID of the top-level menu page to which this submenu item belongs
            __( 'Developer Options', 'ccms' ),          // The value used to populate the browser's title bar when the menu page is active
            __( 'Developer Options', 'ccms' ),          // The label of this submenu item displayed in the menu
            'administrator',                            // What roles are able to access this submenu item
            'ccms-dev',                                 // The ID used to represent this submenu item
            'ccms_developer_display'                    // The callback function used to render the options for this submenu item
        );

    if( $show_dev ==0 )
        remove_submenu_page( 'ccms', 'ccms-dev' );

} // end ccms_developer_theme_menu

But when accessing the page while its hidden i now get this warning and no page outputs.

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'ccms_developer_options' not found or invalid function name in E:\composite-cms\test\wp-includes\plugin.php on line 406

the full code can be found on github

Answer 1

Fixed the issue, the function ccms_developer_display had to be updated to ccms_developer_options so the function name matched the option name.