Display current ranking of post as a number in post title

Could make it work already 🙂

     class MY_Post_Numbers {

    private $count = 0;
    private $posts = array();

    public function display_count() {
        $this->init(); // prevent unnecessary queries
        $id = get_the_ID();
        echo sprintf( '<div class="post-counter">Post number<span class="num">%s</span><span class="slash">/</span><span class="total">%s</span></div>', $this->posts[$id], $this->count );
    }

    private function init() {
        if ( $this->count )
            return;
        global $wpdb;       
        $posts = $wpdb->get_col( "SELECT $wpdb->posts.ID
                FROM $wpdb->posts
                left join $wpdb->postmeta ON ($wpdb->posts.ID = $wpdb->postmeta.post_id)
                WHERE $wpdb->posts.post_status="publish"
                AND $wpdb->posts.post_type="hp_listing"
                AND $wpdb->postmeta.meta_key = 'hp_rating'
                ORDER BY ($wpdb->postmeta.meta_value + 0) DESC");
        $this->count = count($posts);

        foreach ( $posts as $key => $value ) {
            $this->posts[$value] = $key + 1;
        }
        unset($posts);
    }

}
$GLOBALS['my_post_numbers'] = new MY_Post_Numbers;

function my_post_number() {
    $GLOBALS['my_post_numbers']->display_count();
}

with

<?php my_post_number(); ?>

it’s possible to use in template file if anyone else is interested