Hola, no encontre la manera de hacerlo "limpiamente", igual les paso el codigo que utilice para hacerlo por si les sirve
<?php
$limit = 8;
$w = Mage::getSingleton('core/resource')->getConnection('core_write');
$result = $w->query("Select query_text, popularity From catalogsearch_query Order By popularity Asc Limit 0, $limit");
if (!$result) {
return false;
}
for($i=0;$i<$limit;$i++)
{
if($row = $result->fetch(PDO::FETCH_ASSOC))
{
if($i < 3)
{
$textkey = ereg_replace(' ','+',$row['query_text']);
$tags_could[] = $row['query_text'][0].'<span class="select-tags-1"><a href="catalogsearch/result/?q='.$textkey.'">'.$textkey.'</a></span> ';
}
else if($i < 7)
{
$textkey = ereg_replace(' ','+',$row['query_text']);
$tags_could[] = $row['query_text'][0].'<span class="select-tags-1"><a href="catalogsearch/result/?q='.$textkey.'">'.$textkey.'</a></span> ';
}
else
{
$textkey = ereg_replace(' ','+',$row['query_text']);
$tags_could[] = $row['query_text'][0].'<span class="select-tags-1"><a href="catalogsearch/result/?q='.$textkey.'">'.$textkey.'</a></span> ';
}
}
}
sort($tags_could);
echo '<p class="links">';
foreach($tags_could as $v)
{
$tag = substr($v,1);
echo $tag;
}
echo '</p>';
if (!$row) {
return false;
}
?>
Usando tu codigo como referencia subi una extension. Muy buen aporte!