function getProviderCategories($providerId)
 {
     $categories = array();
     $sql = "SELECT DISTINCT category_id\n                FROM \t\t    service_category_cache AS scc\n                INNER JOIN\t    service as s ON scc.service_id = s.id\n                WHERE\t\t    s.active = 'T'\n                AND  \t\t\ts.provider_id = " . Database::SqlInt($providerId);
     foreach ($this->db->getResultset($sql) as $row) {
         $categories[] = Database::GetInt($row['category_id']);
     }
     return $categories;
 }