как получить user photo

<?php
$defaultavatar ='<img src="assets/images/avatars/defaultuser.gif" alt="Анонимен" border="0" />';
$output ='';
$tbl = $modx->dbConfig['table_prefix'];
$authorID = isset($authid) ? $authid : $modx->documentObject['createdby'];
$addutype ='';
if($authorID !='' && $authorID < 0){
    $addutype ='web_';
}

if($authorID == 0){
    $output .=$defaultavatar;
}else{
    if($authorID != ''){
        $authorID = str_replace('-','', $authorID);
        $sql = "SELECT fullname,photo
                FROM ".$tbl.$addutype."user_attributes
                WHERE internalKey='".$authorID."'";

        $rs = $this->dbQuery($sql);
        $limit = $this->recordCount($rs);
            if($limit > 0 && $limit < 2) {
               $user = $this->fetchRow($rs);
               if($user['photo'] != ''){
                 $modx->setPlaceholder('author_photo', '<img width="100" height="100" class="avatar" src="'.$user['photo'].'" alt="'.$user['fullname'].'" border="0" />'); // [+author_photo+]
               }else{
                 $modx->setPlaceholder('author_photo', '<a href="#">'.$defaultavatar.'</a>');
               }
            $output .='[+author_photo+]';
            }

    }else{
       $output .=$defaultavatar;
    }
}

return $output;
?>