The conversion of an Adabas-D syskey in prepared statements don't work since php4.0RC1.
The following code discribes the problem:

$syskey = "00000000005A59AA"; // hex representation of an char(8)byte syskey

$query = "insert into table (id) values ( ?)";
$pre = odbc_prepare($conn, $query);
$data[0] = $syskey;
$result = odbc_execute($pre, $data);

The odbc_execute command will produce the following error:
source: [SOFTWARE AG][ODBCLIB A][ADABAS]
message: INPUT STRING VARIABLE TOO LONG.
               String data, right truncated
error-code: 743
State: 01004

When I'm inserting a substring of the key ($data[0] = substr($syskey, 8) it works, but it isn't the same key!!!