<?php
$etiket = "kelime1,kelime2,kelime3";
$kelimeler = $etiket;
$parcala = explode(',',$kelimeler);
shuffle($parcala);
foreach ($parcala as $etiketkelimeler) {
echo "<a href='index.php?adres'>$etiketkelimeler</a>&nbsp;"; 
}
?>

<a href='index.php?adres'>kelime3</a>&nbsp;<a href='index.php?adres'>kelime1</a>&nbsp;<a href='index.php?adres'>kelime2</a>&nbsp;