Wordpress : widget skeleton

<?php
/*
Plugin Name: Widget Example Plugin
Plugin URI: http://example.com/wordpress-plugins/my-plugin
Description: A plugin to create widgets in WordPress
Version: 1.0
Author: Brad Williams
Author URI: http://wrox.com
License: GPLv2
*/

// use widgets_init action hook to execute custom function
add_action( 'widgets_init', 'boj_widgetexample_register_widgets' );
//register our widget
function boj_widgetexample_register_widgets() {
	register_widget( 'My_Widget' );
}


#PHP: Wordpress widget skeleton
class My_Widget extends WP_Widget {
 
    public function __construct() {
        // widget actual processes
    }
 
    public function form( $instance ) {
        // outputs the options form on admin
    }
 
    public function update( $new_instance, $old_instance ) {
        // processes widget options to be saved
    }
 
   //display the widget
	function widget($args, $instance) {
		extract($args);
		echo $before_widget;
		$title = apply_filters( 'widget_title', $instance['title'] );
		$movie = empty( $instance['movie'] ) ? ' & nbsp;' : $instance['movie'];
		$song = empty( $instance['song'] ) ? ' & nbsp;' : $instance['song'];
		if ( !empty( $title ) ) { echo $before_title . $title . $after_title; };
		echo ' <p> Fav Movie: ' . $movie . ' </p> ';
		echo ' <p> Fav Song: ' . $song . ' </p> ';
		echo $after_widget;
	}
 
}