weird PHP warning

[Net Llama!]

I've got this PHP script which is pulling data from a PostgreSQL database. 
In my web browser, its working fine, however when I happened to be tailing 
the apache error log, I see tons of the following PHP warning:

Unable to jump to row 0 on PostgreSQL result index on line 207

Line 207 is:

$current_update2=pg_result($result2,$lt,0);

Anyone have any ideas what i'm doing wrong here?

Line 207 appears inside the following function:

  function pickColorWIN_cudasmoke($gpu, $arch, $subtest, $hostemu, 
$build_type, $tot_compiler) {

                 $db = pg_connect('host=localhost dbname=nightly 
user=lfriedman');
                 if (!$db) {
                         echo ("Cannot connect to DB!");
                         echo pg_last_error();
                         exit();
                 }
                 $query0 = "SELECT current_status FROM cudasmoke where 
os='WINXP32' AND gpu='$gpu' AND arch='$arch' AND subtest='$subtest' AND 
hostemu='$hostemu' AND build_type='$build_type' AND 
tot_compiler='$tot_compiler' ORDER BY last_update DESC LIMIT 1" ;
                 $query2 = "SELECT last_update FROM cudasmoke where 
os='WINXP32' AND gpu='$gpu' AND arch='$arch' AND subtest='$subtest' AND 
hostemu='$hostemu' AND build_type='$build_type' AND 
tot_compiler='$tot_compiler' AND (SELECT now() - interval '24 hours' < 
date_created::timestamp)='t' ORDER BY last_update DESC LIMIT 1" ;
                 $result = pg_exec($db, $query0);
                 $result2 = pg_exec($db, $query2);
                 if (!$result) {
                     echo "Problem with query " . $query0 . "<br/>";
                     echo pg_last_error();
                     exit();
                 }

                 if ( pg_numrows($result) == 0 ) {
                         print ("<td 
style=\"background-color:999999\"\></td>") ;
                         }
                 else    {
                         for ($lt=0; $lt < pg_numrows($result); $lt++) {
                                 $current_status=pg_result($result,$lt,0);

$current_update1=pg_result($result1,$lt,0);

$current_update2=pg_result($result2,$lt,0);
                                 if ( $current_update1 == $current_update2 
) {
                                         if ( $current_status == '<FONT 
COLOR=Red><B>FAILED</B></FONT>' ) {
                                                 print ("<td 
style=\"background-color:FF3300\"\></td>"); }
                                         else {
                                                 print ("<td 
style=\"background-color:66CC00\"\></td>"); } }
                                 else {
                                         if ( $current_status == '<FONT 
COLOR=Red><B>FAILED</B></FONT>' ) {
                                                 print ("<td 
style=\"background-color:990000\"\></td>"); }
                                         else {
                                                 print ("<td 
style=\"background-color:336600\"\></td>"); }
                                 }
                         }
                 }

                 pg_close($db);
         }


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman                        netllama at linux-sxs.org
LlamaLand				http://netllama.linux-sxs.org