acat - wp widget with all tags

acat-custom-cloud.php

<?php
/**
 * Plugin Name: a.Cat [NODE] myCustomCloud
 * Plugin URI: http://agusti.cat
 * Description: widget nuvol d'etiquetes custom
 * Author: Agusti
 * Author URI: http://agusti.cat
 * Version: 0.2.0
 */

/* Place custom code below this line. */


function widget_myCustomCloud($args) {
    extract($args);
?>
        <?php echo $before_widget; ?>
            <?php echo $before_title
                . 'Etiquetes:'
                . $after_title; ?>
            <?php
            $args_cloud = array(
    'smallest'                  => 8, 
    'largest'                   => 18,
    'unit'                      => 'pt', 
    'number'                    => 0,  
    'format'                    => 'array',
    'orderby'                   => 'name', //'count', 
    'order'                     => 'ASC', //'DESC',
    'exclude'                   => null, 
    'include'                   => null, 
    //'topic_count_text_callback' => default_topic_count_text,
    'link'                      => 'view', 
    'taxonomy'                  => 'post_tag', 
    'echo'                      => false ); ?>
            <ul class="nav nav-pills">
            <?php
            $my_tags = wp_tag_cloud($args_cloud);
            foreach ($my_tags as $my_tag) echo '<li>'.$my_tag.'</li>';
            ?>
            </ul>
        <?php echo $after_widget; ?>
<?php
}
//wp_register_sidebar_widget('myCustomCloud', 'widget_myCustomCloud');

wp_register_sidebar_widget(
    'myCustomCloud_1',        // your unique widget id
    'myCustomCloud',          // widget name
    'widget_myCustomCloud',  // callback function
    array(                  // options
        'description' => 'display all tags!'
    )
);

?>