Ny menu i wordpress

Jeg tror jeg kan komme noget af veje med dette.

https://wordpress.org/support/topic/how-do-i-create-a-new-page-with-the-plugin-im-building

Jeg har fundet dette som laver en ny side.
Nu er objektorienteret programering ikke min stærke side.

Det jeg gerne vil er lidt som på min admin side, der linker knappen til en php fil som bliver includet.



Her er min admin side

function test_admin() {
    include('test_import_admin.php');
}

function test_admin_actions() {
    add_options_page("Test setup", "Test setup", 1, "Test_setup", "test_admin");
}


Hvordan laves nedenstående om til lidt ala min admin side ?




if (!class_exists('Memberlist_Plugin'))
{
  class Memberlist_Plugin
  {
    public $_name;
    public $page_title;
    public $page_name;
    public $page_id;

    public function __construct()
    {
      $this->_name      = 'memberlist';
      $this->page_title = 'Memberlist';
      $this->page_name  = $this->_name;
      $this->page_id    = '0';

      register_activation_hook(__FILE__, array($this, 'activate'));
      register_deactivation_hook(__FILE__, array($this, 'deactivate'));
      register_uninstall_hook(__FILE__, array($this, 'uninstall'));

      add_filter('parse_query', array($this, 'query_parser'));
      add_filter('the_posts', array($this, 'page_filter'));
    }

    public function activate()
    {
      global $wpdb;     

      delete_option($this->_name.'_page_title');
      add_option($this->_name.'_page_title', $this->page_title, '', 'yes');

      delete_option($this->_name.'_page_name');
      add_option($this->_name.'_page_name', $this->page_name, '', 'yes');

      delete_option($this->_name.'_page_id');
      add_option($this->_name.'_page_id', $this->page_id, '', 'yes');

      $the_page = get_page_by_title($this->page_title);

      if (!$the_page)
      {
        // Create post object
        $_p = array();
        $_p['post_title']    = $this->page_title;
        $_p['post_content']  = "This text may be overridden by the plugin. You shouldn't edit it.";
        $_p['post_status']    = 'publish';
        $_p['post_type']      = 'page';
        $_p['comment_status'] = 'closed';
        $_p['ping_status']    = 'closed';
        $_p['post_category'] = array(1); // the default 'Uncatrgorised'

        // Insert the post into the database
        $this->page_id = wp_insert_post($_p);
      }
      else
      {
        // the plugin may have been previously active and the page may just be trashed...
        $this->page_id = $the_page->ID;

        //make sure the page is not trashed...
        $the_page->post_status = 'publish';
        $this->page_id = wp_update_post($the_page);
      }

      delete_option($this->_name.'_page_id');
      add_option($this->_name.'_page_id', $this->page_id);
    }

    public function deactivate()
    {
      $this->deletePage();
      $this->deleteOptions();
    }

    public function uninstall()
    {
      $this->deletePage(true);
      $this->deleteOptions();
    }

    public function query_parser($q)
    {
      if(!empty($q->query_vars['page_id']) AND (intval($q->query_vars['page_id']) == $this->page_id ))
      {
        $q->set($this->_name.'_page_is_called', true);
      }
      elseif(isset($q->query_vars['pagename']) AND (($q->query_vars['pagename'] == $this->page_name) OR ($_pos_found = strpos($q->query_vars['pagename'],$this->page_name.'/') === 0)))
      {
        $q->set($this->_name.'_page_is_called', true);
      }
      else
      {
        $q->set($this->_name.'_page_is_called', false);
      }
    }

    function page_filter($posts)
    {
      global $wp_query;

      if($wp_query->get($this->_name.'_page_is_called'))
      {
        $posts[0]->post_title = __('Memberlist');
        $posts[0]->post_content = 'The contents';
      }
      return $posts;
    }

    private function deletePage($hard = false)
    {
      global $wpdb;

      $id = get_option($this->_name.'_page_id');
      if($id && $hard == true)
        wp_delete_post($id, true);
      elseif($id && $hard == false)
        wp_delete_post($id);
    }

    private function deleteOptions()
    {
      delete_option($this->_name.'_page_title');
      delete_option($this->_name.'_page_name');
      delete_option($this->_name.'_page_id');
    }
  }
}
$memberlist = new Memberlist_Plugin();

Løsningen for mig er at lave en min egen side "custom page"

http://www.smashingmagazine.com/2015/06/wordpress-custom-page-templates/