add_contextual_help deprecated – need help

What action are you hooking this to?

The way it works is that you create an admin page, then you can hook to it so that it will do stuff when that page is loaded. Like this:

add_action('admin_menu', 'example_menu_add');
function example_menu_add() {
// add the menu item and screen
$hook = add_menu_page( 'Whatever', 'Whatever', 'manage_options', 'whatever', 'whatever_admin' );
add_action( "load-$hook", 'example_menu_load' );
}

In the function that is hooked to that load-$hook, I can call get_current_screen() and get back a valid object. But I can’t just call get_current_screen from anywhere, because the screen object might not exist yet. The load-$hook is the hook for my specific screen, and it will get called to create the info for my screen, so then I can be assured that get_current_screen() will return something meaningful.

You need to move the function calls that add the help page out into their own function with a different hook. Like this:

function abc_theme_options_add_page() {

$theme_page = add_theme_page(
		__( 'Theme Options', 'abc' ),   // Name of page
		__( 'Theme Options', 'abc' ),   // Label in menu
		'edit_theme_options',    // Capability required
		'theme_options',   // Menu slug, used to uniquely identify the page
		'abc_theme_options_render_page' // Function that renders the options page
	);

	add_action( "load-$theme_page", 'abc_theme_options_add_help' );
}
add_action( 'admin_menu', 'abc_theme_options_add_page' );

function abc_theme_options_add_help() {
	$help = '<p>'.__('Some help text').'</p>';

	 get_current_screen()->add_help_tab( array(
		'id' => 'my_help_tab',
		'title' => 'My Help Tab',
		'content' => $help
	 ));
}