[site-reviews] show rating with "Posts in Sidebar" plugin

/**
 * Displays the star rating above the excerpt when using the Posts in Sidebar plugin
 * This will only work if your pages or posts have reviews that have been assigned to them
 * Since the Posts in Sidebar plugin hardcodes the text in <p> tags, we have to use
 * the glsr_star_rating() function instead of the [site_reviews_summary] shortcode.
 *
 * Make sure to set the following widget options:
 *     1. Get posts with this meta key: _glsr_ranking
 *     2. Order posts by: Meta value number
 *     3. The order will be: Descending
 *
 * Paste this code in your theme's functions.php file.
 */
function glsr_display_rating_in_pis_excerpt($content) {
    $rating = get_post_meta(get_the_ID(), '_glsr_average', true);
    $starsHtml = apply_filters('glsr_star_rating', null, $rating);
    $starsHtml = str_replace(['<div', '/div>'], ['<span', '/span>'], $starsHtml);
    $starsHtml = '<span class="glsr glsr-default">'.$starsHtml.'</span><br>';
    return $starsHtml.$content;
}

add_filter('pis_content', 'glsr_display_rating_in_pis_excerpt');
add_filter('pis_excerpt_text', 'glsr_display_rating_in_pis_excerpt');
add_filter('pis_more_excerpt_text', 'glsr_display_rating_in_pis_excerpt');
add_filter('pis_only_read_more', 'glsr_display_rating_in_pis_excerpt');
add_filter('pis_rich_content', 'glsr_display_rating_in_pis_excerpt');