Tạo widget bài viết WordPress Popular Posts

function getPostViews($postID){
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0 View";
    }
    return $count.' Views';
}
function setPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}

while(have_posts()):the_post();
setPostViews(get_the_ID());
...
endwhile;

< ?php
	query_posts('meta_key=post_views_count&orderby=meta_value_num&order=DESC');
	if (have_posts()) : while (have_posts()) : the_post(); ?>
	<li><a href="<?php the_permalink(); ?>">< ?php the_title(); ?></a></li>
	< ?php
	endwhile; endif;
	wp_reset_query();
?>

< ?php
function hw_popular_post_cb($data){
	ob_start();
	static $new_row=1;
	static $cols=3;
	static $count=0;
 
	if($new_row){ echo '<div class="row-fluid">';$new_row=0;}
	?>
	<div class="product-wrapper span4" >
<div <?php post_class('product-block',$data['id']); ?> id="post-< ?php echo $data['id']?>">
			<div class="product-content">
				{thumb}
		<div class="product-info">
			<h4 class="product-name"><a href="{url}" title="{text_title}">{text_title}</a></h4>
				<div class="desc">{summary}</div>
																																				<div class="review"></div>
																																			<div class="contact">Liên hệ</div>
	<div class="actions">			                	
		<button type="button" title="Đặt mua" class="button btn-cart" onclick="setLocation('{url}')"><span><span>Đặt mua</span></span></button>
																																					</div>
																						</div>	
	< ?php //edit_post_link( __( 'Edit', 'twentyeleven' ), '<span class="edit-link">', '' ); ?>
									</div>
</div>
</div>
	< ?php
	if(++$count==$cols){ echo '</div>';$count=0;$new_row=1;}
	if($data['is_end_post'] && !$new_row) echo '';
 
	$cont=ob_get_contents();
	ob_end_clean();
	return $cont;
}
?>

the_widget('WordpressPopularPosts',array(
	'thumbnail'=>array(
		'active'=>'1',
		'width'=>'150',
		'height'=>'150',
		'class'=>'',
		'link_class'=>'product-image'
	),
	'markup'=>array(
		'custom_html'=>'on',
		'post-html-callback'=>'hw_popular_post_cb',
		//'template'=>''
		//'post_html'=>'<div id="pop-link"><div id="pop-thumb">{thumb}</div><div id="pop-title"><a href="{url}">{text_title}</a></div></div>',
		//'title_length'=>50,
		'order_by'=>'views',
		'limit'=>get_option('posts_per_page'),
		'post-start'=>'',//
		'post-end'=>'',//
		'wpp-start'=>'',
		'wpp-end'=>'',
		'title-start'=>'',
		'title-end'=>''
	)));