zelf ontwikkelde plugin werkt niet

Hoi,

Ik ben bezig om een plugin te maken zodat ik een archief kan maken wat er zo uitziet ( http://floatleft.com/notebook/wordpress-year-month-archives/)

De code ziet er zo uit :

<?php
/*
Plugin Name: Custom archive plugin
Plugin URI: http://www.wpexplorer.com/
Description: A simple plugin that adds a simple widget
Version: 1.0
Author: WPExplorer
Author URI: http://www.wpexplorer.com/
License: GPL2
 */
?>

claas custom_archive extends WP_Widget {

	// constructor
	function custom_archive() {
		parent::WP_Widget(false, $name = __('My Widget', 'custom_archive') );
	}

	// widget form creation
	function form($instance) {
	  // Check values
        if( $instance) {
             $title = esc_attr($instance['title']);
             $text = esc_attr($instance['text']);
             $textarea = esc_textarea($instance['textarea']);
        } else {
             $title = '';
             $text = '';
             $textarea = '';
         }
         ?>
         <p>
            <label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Widget Title', 'wp_widget_plugin'); ?></label>
            <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" />
         </p>
         <p>
            <label for="<?php echo $this->get_field_id('text'); ?>"><?php _e('Text:', 'wp_widget_plugin'); ?></label>
            <input class="widefat" id="<?php echo $this->get_field_id('text'); ?>" name="<?php echo $this->get_field_name('text'); ?>" type="text" value="<?php echo $text; ?>" />
         </p>
         <p>
            <label for="<?php echo $this->get_field_id('textarea'); ?>"><?php _e('Textarea:', 'wp_widget_plugin'); ?></label>
            <textarea class="widefat" id="<?php echo $this->get_field_id('textarea'); ?>" name="<?php echo $this->get_field_name('textarea'); ?>"><?php echo $textarea; ?></textarea>
        </p>
        <?php
        }

	// widget update
	function update($new_instance, $old_instance) {
           $instance = $old_instance;
          // Fields
          $instance['title'] = strip_tags($new_instance['title']);
          $instance['text'] = strip_tags($new_instance['text']);
          $instance['textarea'] = strip_tags($new_instance['textarea']);
         return $instance;
	}

	// widget display
	function widget($args, $instance) {
	  <?php
         $year_prev = null;
          $months = $wpdb->get_results(	"SELECT DISTINCT MONTH( post_date ) AS month ,
								YEAR( post_date ) AS year,
								COUNT( id ) as post_count FROM $wpdb->posts
								WHERE post_status = 'publish' and post_date <= now( )
								and post_type = 'post'
								GROUP BY month , year
								ORDER BY post_date DESC");
           foreach($months as $month) :
	          $year_current = $month->year;
	          if ($year_current != $year_prev){
		        if ($year_prev != null){?>
		         </ul>
		            <?php } ?>
	                   <h3><?php echo $month->year; ?></h3>
	                   <ul class="archive-list">
	                   <?php } ?>
	                   <li>
		               <a href="<?php bloginfo('url') ?>/<?php echo $month->year; ?>/<?php echo date("m", mktime(0, 0, 0, $month->month, 1, $month->year)) ?>">
			        <span class="archive-month"><?php echo date("F", mktime(0, 0, 0, $month->month, 1, $month->year)) ?></span>
			        <span class="archive-count"><?php echo $month->post_count; ?></span>
		               </a>
	                  </li>
                         <?php $year_prev = $year_current;
            endforeach; ?>
            </ul>
	}
}

// register widget
add_action('widgets_init', create_function('', 'return register_widget("custom_archive");'));

?>

Maar nu krijg ik deze foutmelding als ik de plugin wil activeren:

Parse error: syntax error, unexpected ‘}’ in /home/vhosting/c/vhost0008707/domains/tamarawobben.nl/htdocs/test/wp-content/plugins/custom_archive/archive_custom.php on line 46

Wie kan me helpen dit werkend te krijgen ?

Groetjes,

Roelof