[reviewer_experience] shortcode

/**
 * Use the Code Snippets (https://wordpress.org/plugins/code-snippets/)
 * plugin to add this shortcode to your website.
 *
 * Example usage:
 * [reviewer_experience assigned_posts="post_id" text="{positive}% are positive reviews, {negative}% are negative reviews."]
 */
add_shortcode('reviewer_experience', function ($content = '') {
    $args = wp_parse_args($content, [
        'text' => '{positive}% of reviewers reported a positive experience, while {negative}% reported a negative experience.',
    ]);
    $results = glsr_get_ratings($args);
    $negative = $results->ratings[0] + $results->ratings[1] + $results->ratings[2];
    $positive = $results->ratings[3] + $results->ratings[4] + $results->ratings[5];
    if ($negative > 0) {
        $negative = round($negative / $results->reviews * 100);
    }
    if ($positive > 0) {
        $positive = round($positive / $results->reviews * 100);
    }
    return str_replace(['{positive}', '{negative}'], [$positive, $negative], $args['text']);
});