WordPress Review Plugin

Hi everyone!

I found this review plugin for wordpress, but the function to determine if the comment is positive or negative doesn’t work properly so I wanted to ask if someone here could help me fix it

The function first

function sb_get_post_negative_positive_ratings($post_id,$type) {

    global $wpdb,$sb_ratings_table, $sb_ratings_cats_table, $comment_table,$sb_cat_global_table;
    $category_id = sb_getCategoryByPostId($post_id);
    $sql = "SELECT * FROM <code>&quot; . $sb_ratings_table . &quot;</code> "
         . "INNER JOIN <code>&quot; . $comment_table . &quot;</code> "
         . "ON (<code>&quot; . $sb_ratings_table . &quot;</code>.<code>comment_id</code> = <code>&quot; . $comment_table . &quot;</code>.<code>comment_ID</code>) "
         . "INNER JOIN <code>&quot; . $sb_ratings_cats_table . &quot;</code> "
         . "ON (<code>&quot; . $sb_ratings_table . &quot;</code>.<code>rating_cat_id</code> = <code>&quot; . $sb_ratings_cats_table . &quot;</code>.<code>id</code>) "
         . "INNER JOIN <code>&quot; . $sb_cat_global_table . &quot;</code> "
         . "ON (<code>&quot; . $sb_ratings_table . &quot;</code>.<code>rating_cat_id</code> = <code>&quot; . $sb_cat_global_table . &quot;</code>.<code>id</code>) "
         . "WHERE <code>&quot; . $comment_table . &quot;</code>.<code>comment_post_ID</code> = " . $post_id . " "
         . "AND <code>&quot; . $sb_cat_global_table . &quot;</code>.<code>wp_cat_id</code> = {$category_id} "
         . "ORDER BY <code>&quot; . $sb_ratings_table . &quot;</code>.<code>comment_id</code> ASC";
    $sql_result = $wpdb->get_results($sql,'ARRAY_A');
    if (is_null($sql_result)) {
        $sql_result = array();
    }

    $score = array();
    foreach ($sql_result as $data) {
        if (!isset($data['comment_id'])) {
            $score[$data['comment_id']] = array();
        }
        $score[$data['comment_id']][] = array(
                                        'current' => ($data['rating_value'] / $data['scale_max']) * $data['weight'],
                                        'max'   => $data['weight']
                                         );
    }

    $negative = 0;
    $positive = 0;
    foreach ($score as $comment_id => $scores) {

        $allRatings = 0;
        $maxRatings = 0;
        $avgMax = 0;
        foreach ($scores as $d) {
            $allRatings += $d['current'];
            $maxRatings += $d['max'];
        }
        $avgMax = $maxRatings / (count($scores));
        if ($allRatings < $avgMax) {
            $negative++;
        } else {
            $positive++;
        }
    }

    if ($type == 'positive') {
        return $positive;
    } elseif($type == 'negative') {
        return $negative;
    }

    return 0;
}

Here is the link to the review site
http://www.sourcebench.com/toolbox/sb_review-wordpress-review-plugin

I really need to make this work, but unfortunately my php skills are limited

Thanks for reading