private function get_extensions()
{
$sql = 'SELECT *
FROM ' . $this->extension_table;
$result = $this->db->sql_query($sql);
$extensions_row = $this->db->sql_fetchrowset($result);
$this->db->sql_freeresult($result);
$extensions = array();
foreach ($extensions_row as $extension) {
$extensions[$extension['ext_name']] = $extension;
}
ksort($extensions);
return $extensions;
}