发送两个键与post在我的值=""

我想知道我如何发送两个主键与我的POST?到目前为止，我只知道如何发送一个。这就是我如何得到一个与我的按钮value='$id'，现在我需要我的$key也这样我可以更新我的sql。我需要在数组中做吗?或者把他们俩连在一起?

我的数据库

    while((db2_fetch_row($queryexe)) and ($counter < $max)) {
     $key = db2_result($queryexe, 'PKEY');
     $id = db2_result($queryexe, 'PID');
     $akt = db2_result($queryexe, 'AKT');

Tables + my button

print("<td>$key</td>'n");
print("<td class='center'>$id</td>'n");
print("<td><form class='form-horizontal' method='post'><button  name = 'test' 
type='submit' id = 'test' value='$id' class='btn btn-default'>
<i class='glyphicon glyphicon-repeat'></i> Klar
  </button></form></td>'n");

和我的按钮

       if(isset($_POST['test'])) {
                $dbhost = '***';
                $dbuser = '***';
                $dbpass = '***';
                $conn = db2_connect($dbhost, $dbuser, $dbpass);
                if(! $conn ) {
                   die('Could not connect: ');
                }

                $sql = "UPDATE MYDB SET AKT = 'X' 
                WHERE PKEY = '$key' AND PID = $id ";
                $retval =  db2_exec( $conn, $sql);
                if(! $retval ) {
                  die('Could not update data: ' . db2_stmt_errormsg());
                }
                echo "Updated data successfully'n";
                db2_close($conn); 
             }   

}