如何将数组中的项目添加为类

我是 php 的新手，所以请善待。

我正在构建一个脚本，可以从Facebook页面获取Facebook喜欢的数量。

然后它对它们进行排序，我找到了一种使用 css 添加页面个人资料图片的方法，但是我唯一能够添加的类是 url。 如何为每个缩略图提供自己的类，然后我可以将 CSS 应用于该类？

这是我的代码：

function array_sort($array, $on, $order=SORT_ASC)
{
$new_array = array();
$sortable_array = array();
if (count($array) > 0) {
    foreach ($array as $k => $v) {
        if (is_array($v)) {
            foreach ($v as $k2 => $v2) {
                if ($k2 == $on) {
                    $sortable_array[$k] = $v2;
                }
            }
        } else {
            $sortable_array[$k] = $v;
        }
    }
    switch ($order) {
        case SORT_ASC:
            asort($sortable_array);
        break;
        case SORT_DESC:
            arsort($sortable_array);
        break;
    }
    foreach ($sortable_array as $k => $v) {
        $new_array[$k] = $array[$k];
    }
  }
  return $new_array;
  }

  function getLikes($arr){
$urls = "";
// Add urls to check for likes
for($i = 0;$i < count($arr);$i++) {
    if($urls != "") $urls .= ",https://www.facebook.com/";
    $urls .= $arr[$i];
}
// Retreive info from Facebook 
$xml = simplexml_load_file("http://api.facebook.com/restserver.php?method=links.getStats&urls=https://www.facebook.com/" . $urls);
$likes = array();
// Loop through the result and populate an array with the likes
for ($i = 0;$i < count($arr);$i++) {
    $url = $xml->link_stat[$i]->url;
    $counts = (int)$xml->link_stat[$i]->like_count;         
    $likes[] = array('likes' => $counts,'url' => $url);number_format(1000, 0, '.', ',');
}   
return $likes;
 }
 $array =      array("kylieminogue","SiaMusic","iggyazalea");
 $likes = getLikes($array);


 $likes = array_sort($likes, 'likes', SORT_DESC); 

 foreach ($likes as $key => $val) {
 $final = number_format($val['likes'], 0, '.', ',');
 echo "<li class='facebook'><div class='fb-page'><div class='rank'>" . $key . "</div>" . "<div class='thumb "  . $val['url'] . "'><div class='link'>" . $val['url'] . "</div></div>" . "<div class='likes'>" . $final . "</div></div></li><br />";
 }