Tags listing with tagged pages (Wolf CMS)

<?php
function allTags() {
    global $__CMS_CONN__;
    $sql = 'SELECT name FROM '.TABLE_PREFIX.'tag';
    $arr = array();

    $stmt = $__CMS_CONN__->prepare($sql);
    $stmt->execute();
    while ($obj = $stmt->fetchObject())
        array_push($arr, $obj->name);
    return $arr;
}
print_r(allTags());
// echo allTags();
?>

<?php foreach (allTags() as $tag) : ?>

<?php $findTag = $tag; // REPLACE hello WITH THE TAG YOU WANT TO FIND ?>
<h3>Pages with the tag "<?php echo $findTag; ?>":</h3>
<ul>
<?php foreach ($this->find('articles')->children() as $child): ?>
<?php $childTags = join(',', $child->tags()); ?>
  <?php if (preg_match("/\b".$findTag."\b/i", $childTags)) : ?>
    <li><?php echo $child->link(); ?></li>
  <?php endif; ?>
<?php endforeach; ?>
</ul>

<?php endforeach; ?>