Where is an error (BLOB/PostgreSQL)?

[RussianMan]

i have some code for UPLOAD and DOWNLOAD files on server, but it is not work correctly. Result: i'm try to download uploaded file, but seen this: /tmp/phpUkLSm9!
Please help me to find error.
UPLOAD code

                pg_exec ($dbase,"begin");
                $oid=pg_locreate ($dbase);
                $handle=pg_loopen($dbase, $oid, "w");               

                pg_lowrite($handle, "$prodfile");
                pg_loclose($handle);
                pg_exec($dbase, "commit");

//where $prodfile=<INPUT TYPE=FILE NAME=prodfile>

DOWNLOAD code:

        pg_exec ($dbase,"begin");
        $handle=pg_loopen($dbase, $prod_fileoid, "r");
        pg_loreadall($handle);
        pg_loclose($handle);
        pg_exec($dbase, "commit");
//where $prod_fileoid - object id from database

Thank you!