<?php

add_filter('posts_results', 'podlove_remove_trash_posts_from_the_posts', 10, 2);

/**
 * Filters trashed, imported posts from our posts out.
 *
 * @param mixed $posts
 * @param mixed $wp_query
 */
function podlove_remove_trash_posts_from_the_posts($posts, $wp_query)
{
    global $wp_the_query;

    // Apply filter not in the backend and only on the main query
    if ($wp_query->is_admin && $wp_the_query == $wp_query) {
        return $posts;
    }

    // No post request
    if (isset($wp_query->query['preview']) || false === (isset($wp_query->query['name']) || isset($wp_query->query['p']))) {
        return $posts;
    }

    // Only check if we found more than 2 posts
    if (2 > count($posts)) {
        return $posts;
    }

    // Remove trashed posts
    foreach ($posts as $index => $post) {
        if ('trash' == $post->post_status) {
            unset($posts[$index]);
        }
    }

    // Resets array keys
    $posts = array_values($posts);

    return $posts;
}