Simple class plugin

gistfile1.txt

<?php
/*
Plugin Name: Demo 
Plugin URI: http://www.xxxx
Author: Name...
Author URI: http://www.xxxx
Demo: http://www.xxxxx
External: http://www.xxxxx
Description: A simple demo
PageLines: true
Version: 1.0
*/

class DemoClassName {
	
	/**
	 * Construct, always run when class is initiated
	 *
	 */
	function __construct() {
		
		$this->init();
		
		if ( !is_admin() )
			add_action( 'wp_footer', array( &$this, 'test_function' ) );
			
	}
	
	function test_function() {

		echo sprintf( '<p>Hello %s</p>', $this->val );
	}
	
	function init() {
		
		// this is being called from the contructor, so its gonna be run everywhere!
		
		$this->val = 'World!';
	}
	
	
} // class end


// this starts the plugin code.
new DemoClassName;