<?php
$kws = [];
$all = \Phpcmf\Service::M()->table_site('news')->where("`keywords`<>''")->order_by('rand()')->getAll();
if ($all) {
    foreach ($all as $t) {
        $a = explode(',', $t['keywords']);
        foreach($a as $b) {
            $kws[$b] = $b;
        }
    }
}
?>
{loop $kws $k}
<span>{$k}</span>
{/loop}