我试图创建一个自定义标记云小部件，该小部件如下所示：

此外，当我尝试在帖子中添加一些新标签时，它会显示如下内容（只有一个标签）：

这是我的functions.php

if(function_exists(\'register_sidebar\')) {

    register_sidebar(
    array(
         \'name\' => __(\'Main Sidebar\'),
         \'id\' => \'main-sidebar\',
         \'description\' => __(\'The main sidebar area\'),
         \'before_widget\' => \'<div class="widget">\',
         \'after_widget\' => \'</div>\',
         \'before_title\' => \'<h2>\',
         \'after_title\' => \'</h2>\'
   ));

}

/****************************************************/
/* Load Custom Widgets */  
/***************************************************/

require_once(\'functions/rh_tags.php\');

<?php 
class RH_Tags extends WP_Widget {
    function __construct() {
        $params = array(
            \'name\' => \'Creative : Tag Cloud Widget\',
            \'description\' => \'Displays info of your blog\'
            );
        parent:: __construct(\'RH_Tags\',\'\',$params);
    }

    public function form($instance) {
        //display our form in widget page
        extract($instance);
        ?>
        <p>
            <label for="<?php echo $this->get_field_id(\'title\') ?>">Title : </label>
            <input class="widefat" id="<?php echo $this->get_field_id(\'title\') ?>" name="<?php echo $this->get_field_name(\'title\') ?>" 
            value="<?php if(isset($title)) echo esc_attr($title); ?>" />
        </p>
        <?php
    }

    public function widget($args,$instance) {
        //displays our widget
        extract($args);
        extract($instance);
        echo $before_widget;
           echo $before_title .$title. $after_title;
           echo \'<div class="label">\';
           echo "<ul>";
                echo "<li>";
                echo the_tags(\' \',\' \');
                echo "</li>";
                echo "</ul>";
           echo \'</div>\';
        echo $after_widget;
    }
} 

add_action(\'widgets_init\',\'rh_register_tags\');
function rh_register_tags() {
    register_widget(\'RH_Tags\');
}