problem with odbc, mysql and placeholders

[Jake Edge <jake@xxxxxxxxx>]

I am running into a problem using placeholders in a SELECT statement 
using odbc_prepare and odbc_execute with a mysql driver from php 
(version numbers, etc. after the code sample).  The following code works 
just fine for postgresql, but not for mysql:

#!/usr/bin/php

<?php

$conn = odbc_connect('tstdb', 'xxxxx', 'yyyyy');
if ($conn == 0) {
    echo("connect failed");
    $sqlerr = odbc_errormsg($conn);
    echo($sqlerr);
}
$stmt = odbc_prepare($conn, 'SELECT firstname, lastname FROM tst where 
id=?');
$result = odbc_execute($stmt, array(1));
if (!$result) {
    echo("SELECT failed");
    $sqlerr = odbc_errormsg($conn);
    echo($sqlerr);
}
while (odbc_fetch_into($stmt, $row)) {
    print $row[0];
    print $row[1];
    print "\n";
}
?>

With postgres i get the firstname and lastname as expected, but with 
mysql, i get some kind of gibberish (stdn_u) ... another interesting 
thing is that if I change the prepare to use 'where id=1', it works fine 
for mysql (and postgres for that matter).  There is nothing tricky about 
the table (int id and varchar(20) for the names) and I can do all of 
this kind of stuff using ODBC from C (unixODBC) with both database 
systems.  Also, UPDATEs using placeholders seem to work fine for MySQL 
also ...

I understand that this may not be a problem with the php odbc code but 
instead with one of the other layers ... how would i narrow that down? 
Any other places that I could post this question that might be better 
than here?

I get substantially the same results on an FC3 and a RH9 linux box with 
the following versions:

FC3:  php-4.3.10-3.2, php-odbc-4.3.10-3.2, unixODBC-2.2.9-1, 
MyODBC-2.50.39-19.1, mysql-3.23.58-14

RH9:  php-4.2.2-17, php-odbc-4.2.2-17, unixODBC-2.2.3-6, 
MyODBC-2.50.39-11, mysql-3.23.54a-11

thanks in advance for any help you can provide!

jake

--
Jake Edge - jake@xxxxxxxxx - http://www.edge2.net

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