I am wondering the way i can produce a wordpress plugin to output some data through the admin panel. Simply to get me going what code will make a webpage within the admin panel (for just managers) to show time()?

It's really super easy, you simply need a couple of things:

  1. One of many tutorials on writing a Wordpress plugin. Plug ins sign up for actions (among other activities) and may emit HTML when an action is triggered through the Wordpress engine.
  2. The list on the Wordpress codex of actions to which plugins can subscribe to trigger their very own code. Adding actions is determined for the reason that tutorial. Particularly you would like the administrative actions. e.g.: the admin_footer action may cause your plugin's output to become displayed within the footer from the admin page. There's an array of actions for a myriad of situations and scenarios.

The PHP date() function provides you with the present time, so you need to simply write a function inside your wordpress plugin that does echo date(), after which use add_action to obtain your PHP function performed in reaction towards the appropriate Wordpress action.

So to really make it completely obvious, your wordpress plugin code would seem like this (not examined!):

Plugin Name: Admin Date Displayer
Plugin URI: http://example.com/
Description: Displays the current datetime on the admin page
Author: Stewart
Version: 1.0
Author URI: http://bolidian.com/

function display_date()
    echo date();

add_action('admin_footer', 'display_date');

The WordPress codex is the greatest start for finding out how to do this stuff. http://codex.wordpress.org/Adding_Administration_Menus