Devolver los post mas vistos usando el plugin Wordpress Popular Posts

popular_posts.php

<?php
$post_type = 'post'; // post, page, custom_post_type

if (function_exists('wpp_get_mostpopular')) {

	add_filter('wpp_html', 'wpp_get_array', 10, 2);

	function wpp_get_array($content, $posts_data) {

		$id = array();
		foreach ($posts_data as $item) {
			$id[] = $item->id;
		}
		return $id;
	}

	$popular_posts_object = new WordPressPopularPosts;

	$instance = array(
					'range' => 'monthly',
					'post_type' => $post_type
	);

	$popular_posts_ids = $popular_posts_object->get_popular_posts($instance);
} else {
	$popular_posts_ids = array();
}

$args = array(
				'posts_per_page' => 6,
				'post_type' => $post_type,
				'post__in' => $popular_posts_ids
);
$popular_posts = get_posts($args);

foreach ($popular as $item) {
	// Do something
}