Wordpress: Start Widget

gistfile1

<?php 

error_reporting(E_ALL);

/*
Plugin Name: PLUGIN_NAME
Plugin URI: PLUGIN_URI
Description: PLUGIN_DESCRIPTION
Version: 1.0
Author: Jeremy Worboys
Author URI: http://complexcompulsions.com
*/

class PLUGIN_CLASS extends WP_Widget {

	//--------------------------------------------------------------------------

	/**
	 * Runs when the class is instantiated.
	 */
	function __construct()
	{
		$params = array(
			'name'        => 'PLUGIN_NAME',
			'description' => 'PLUGIN_DESCRIPTION'
		);

		parent::__construct('PLUGIN_CLASS', '', $params);
	}

	//--------------------------------------------------------------------------

	/**
	 * Displays the settings form on the widget configuration page.
	 */
	public function form($instance)
	{
		extract($instance);
		?>

		<p>
			<label for="<?php echo $this->get_field_id('title') ?>">Title: </label>
			<input type="text" class="widefat"
			       id="<?php echo $this->get_field_id('title') ?>"
			       name="<?php echo $this->get_field_name('title') ?>" 
			       value="<?php echo (isset($title)) ? esc_attr($title) : '' ?>">
		</p>

		<?php
	}

	//--------------------------------------------------------------------------

	/**
	 * Displays the widget on the front-end of the website.
	 */
	public function widget($args, $instance)
	{
		extract($args);
		extract($instance);

		// Provide default values
		$title = (!empty($title)) ? $title : 'Recent Tweets';
		$data = $this->tweets($username, $tweet_count);

		// Check $data came back ok
		if ($data === false || !isset($data->tweets)) {
			return false;
		}

		// Apply filters
		$title = apply_filters('widget_title', $title);

		// Output widget
		echo $before_widget;
			echo $before_title . $title . $after_title;
			echo WIDGET_CONTENTS;
		echo $after_widget;
	}

	//==========================================================================

	PRIVATE_FUNCTIONS

	//--------------------------------------------------------------------------

}

add_action('widgets_init', 'register_PLUGIN_CLASS');
function register_PLUGIN_CLASS()
{
	register_widget('PLUGIN_CLASS');
}