It seems that your function wstock_variation not exists or is created in PHP file not include in your plugin… If you are using OOP, for example your code need to be like: add_submenu_page( ‘Elites-StockManager’, ‘Smart Stock Manager’, ‘export’, ‘administrator’, ‘wstock_variation’, array($this, ‘wstock_variation’) ); // remove number 8, method accept only 6 params $this is method … Read more
The function add_menu_page return the hook suffix that inform you about the current page. A simple example to get the hook suffix. public function add_menu_page() { $page_hook_suffix = add_menu_page( esc_html__( ‘Admin Page’, ‘translation-slug’ ), esc_html__( ‘Admin Page’, ‘translation-slug’ ), ‘read’, ‘My Name’, array( $this, ‘get_styles’ ) ); add_action( ‘admin_print_scripts-‘ . $page_hook_suffix, array( $this, ‘enqueue_assets’ ) … Read more
The setting API, which its usage is being demonstrated in that code is meant to be use as a framework to create settings pages which result in update of values in options. Widget settings are is a somewhat more abstract level. They are stored in options, but there is no flexibility how they are stored, … Read more
The parameters have the same meaning, they are just named inconsistent. Both accept calls to a function. This can even be the same function. Here is a simple demo as a plugin. Download /* Plugin Name: Callback Demo Description: Demonstrating how a meta box and a menu page can take the same callback function. Version: … Read more
The error tells you what the problem is… PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, function … Your “callback” isn’t a function. It is a file. It doesn’t work that way. You will need a helper function to include a file. Something like: add_menu_page( ‘Private Messages’, ‘Private Messages’, ‘manage_options’, ‘message_admin’, ‘include_message_admin’, … Read more
I noticed your apwb_settings_page() function is adding the “Postal Pricing Settings” submenu using add_options_page(), and the documentation stated that: (bold formatting added by me) This function is a simple wrapper for a call to add_submenu_page(), passing the received arguments and specifying ‘options-general.php‘ as the $parent_slug argument. This means the new options page will be added … Read more
How can I highlight a top level dashboard menu item created for a custom taxonomy?
Run this once, it will be saved in database. You can run it once by adding it to functions.php and reloading the site once. $user = new WP_User( $user_id ); // the user id you want to have that capability $user->add_cap( ‘edit_others_posts’ ); // or any other capability that you want
Try using remove_menu_page(). https://codex.wordpress.org/Function_Reference/remove_menu_page
Dynamic admin submenu