BUG id #12006
Dear Derick
/* Table: LOTTERY, Owner: SYSDBA */

CREATE TABLE "LOTTERY" 
(
  "INSTALL1"	DATE NOT NULL,
  "RATE1"	NUMERIC(9, 2),
  "INSTALL2"	DATE,
  "RATE2"	NUMERIC(9, 2),
  "TOTAL"	 COMPUTED BY (rate1 + rate2),
CONSTRAINT "pkLOTTERY" PRIMARY KEY ("INSTALL1")
);
The above is my table structure.
the following is my php code that produce previous mentioned bug.
ibase_timefmt("%d/%m/%Y", IBASE_DATE);
$db = ibase_pconnect('c:/mydb.gdb', 'SYSDBA', 'masterkey');
$query = "select * from lot";
$result = ibase_query($db, $query );
$sum = 0;
$rowcount = 0;
print "<h1><center>Lottery</center></h2>";
print "<table border>";
print "<tr><th>DATE01</th><th>TOTAL1</th><th>DATE16</th><th>TOTAL2</th><th>TOTALSUM</th></tr>";
 while( $row = ibase_fetch_row( $result )){
  $s = sprintf( "<tr><td>$row[0]</td><td align = right>%s</td><td>$row[2]</td><td align = right>%s</td><td align = right>%s</td></tr>", number_format($row[1], 2),number_format($row[3], 2), number_format($row[4], 2));
  print $s;
  $sum += $row[4];
  $rowcount++;
}
 ibase_free_result($result);
 ibase_commit();
 ibase_close($db);
  sorry for any incoutesy I'm very novice for responding by this system.