代替\'call_user_func_array\' 要调用以输出页面内容的函数的名称。

add_action(\'admin_menu\', \'personalised_menu\');
function personalised_menu()
{
   add_menu_page( \'Page Title\', \'Blog\', \'edit_posts\', \'menu_slug\',
       \'display_main_page\', \'dashicons-welcome-write-blog\' );
   add_submenu_page( \'menu_slug\', \'Add New Page\', \'Add New\', \'edit_posts\',\'add_new_page\', 
        \'display_secondary_page\' );
}

function display_main_page() {
    echo \'Content of "Page Title"\';
}

function display_secondary_page() {
    echo \'Content of subpage\';
}