php mysql 테이블 목록 구하기

<?
$dbconn2=mysql_connect("localhost","root","1234");

$dbname="onlinebee_net";

$result = mysql_list_tables($dbname);

while ($row = mysql_fetch_row($result)) {

    echo"$row[0] <br>";

      $sql2="SHOW COLUMNS FROM ".$row[0]; 

      $q2=mysql_query($sql2,$dbconn2);

       while ($dbrow = mysql_fetch_assoc($q2))
       {

               foreach($dbrow as $key=>$value)
              {
                     echo"a: $key :: b: $value <br> ";

              }

       }

}

?>