odbc_fetch_object() works nice with PHP 4.3.3 under W2K with IBM DB2 V.7.2 and V.8.1:

<?php
$conn = odbc_connect($db_name, $username, $password) or die(odbc_error_msg()); 
$sql = "SELECT * FROM TABLE"; 
$result = odbc_exec($conn, $sql);
while ($rows = odbc_fetch_object($result)) { 
    print $rows->COLUMNNAME;
    }
odbc_close($conn); 
?>