取得phpcms网站下所有栏目的内容链接

<?php      $conf['DB_USER'] = 'user';      $conf['DB_PWD'] = 'pwd';      $conf['DB_NAME'] = 'dbname';      $conn = mysql_connect('localhost',$conf['DB_USER'],$conf['DB_PWD']);      if (!$conn) {          echo '数据库连接错误！';      }      mysql_set_charset('utf8', $conn);        //set charset      mysql_select_db($conf['DB_NAME']);       //select datebase         $sql2 = 'select catid,catname from v9_category';      $cat = mysql_query($sql2);      while ($catrow=mysql_fetch_array($cat)) {          echo $catrow['catname'].'</br>';          $sql = '(select title,url from v9_news where catid='.$catrow["catid"].' order by id desc)            UNION (select title,url from v9_product where catid='.$catrow["catid"].' order by id desc)';          $result = mysql_query($sql);          while ($row=mysql_fetch_array($result)) {                 echo $row['url']."</br>";                   }      }  ?>