Currently, COM does not support variant type 1. This is type NULL.

This should be easy to fix as we can make it equivalent to false. Does PHP support null as a constant?

The bug can be replicated by accessing a database with nulls in the records using ADO.

<?
        $dbc = new COM("ADODB.Connection");
        $dbc->open ("driver={Microsoft Access Driver (*.mdb)};dbq=d:/test/DB/guestbook.mdb;uid=Admin");
        $rs = $dbc->Execute("select * from guestbook");
        $i = 0;
        while (!$rs->EOF) {
                $i += 1;
                $fld0 = $rs->Fields(0);
                $fld1 = $rs->Fields(1);
                $fld2 = $rs->Fields(2);
                print "$fld0->value $fld1->value $fld2->value<BR>";
                $rs->MoveNext();
        }
        $rs->Close();
?>