Nach Theme-Wechsel keien Gravatare der Top-Kommentatoren

<?php $topcommentator_query="SELECT comment_author, comment_author_email, comment_type, SUBSTRING_INDEX(REPLACE(comment_author_url, 'www.', ''), '/', 3) as top_commentator, COUNT(*) as top_num FROM $wpdb->comments
WHERE comment_approved='1'
AND comment_author_url IS NOT NULL
AND comment_author_url != ''
AND comment_author_email NOT LIKE '@themenfreund.de%'
AND comment_author_url NOT LIKE 'http://facebook.com/%'
AND comment_author_url NOT LIKE 'http://themenfreund.de%'
AND comment_author_url NOT LIKE 'http://twitter.com%'
AND comment_type NOT LIKE 'pingback' OR 'trackback'
GROUP BY top_commentator
Order by top_num DESC, comment_date ASC
LIMIT 18";
$topcommentator_result = $wpdb->get_results($topcommentator_query);
if ( !empty($topcommentator_result) ) {
foreach ($topcommentator_result as $comment) :
$co_aut = $comment->top_commentator;
$co_aut = str_ireplace("http://", "", $co_aut); ?>

<?php
$i++;
if($i%3==0) { ?>
<?php
}
endforeach;
$i=0;
}
?>