We will look into this, but can you provide a simple example that displays this problem with expected and actual output?  Thanks,

This is sample program. Could you try it?

Program:
print('This is PDO_ODBC.<br>');
$con = new PDO('odbc:dbname','user','password');

print('This is PDO_IBM.<br>');
$con = new PDO('ibm:DSN=dbname','user','password');

$con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

print('beginTran<br>');
$con->beginTransaction();

$stmt = $con->prepare("insert into TEST (TEST_ID, TEST_NM ) values (?, ?)");

try {
    print('execute<br>');
    $res = $stmt->execute(array(1,'a'));
	
    if($res){
        print('commit<br>');
        $con->commit();   
    } else {
        $err = $stmt->errorInfo();
        print('execute failed<br>');
        print($err[0].'<br>');
        print($err[1].'<br>');
        print($err[2].'<br>');
        $con->rollBack();
    }
}
catch(Exception $e) {
    $err = $stmt->errorInfo();
    print('exception occured<br>');
    print($err[0].'<br>');
    print($err[1].'<br>');
    print($err[2].'<br>');
    $con->rollBack();   
}



Result of PDO_ODBC.
This is PDO_ODBC.
beginTran
execute
exception occured
23505
-803
[IBM][CLI Driver][DB2/LINUX] SQL0803N "1" ~Japanese message~ SQLSTATE=23505 (SQLExecute[-803] at /usr/local/src/php-5.2.0/ext/pdo_odbc/odbc_stmt.c:133)

Result of PDO_IBM
This is PDO_IBM.
beginTran
execute
execute failed
00000
0
(SQLExecute[0] at /usr/local/src/php-5.2.0/ext/pdo_ibm/ibm_statement.c:717)

This bug has been fixed in CVS.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.

This has been fixed in CVS Head.