Re: pg_fetch_array()

On Wed, 18 Dec 2002 21:38:32 +0100
Thorsten Haude <postgresql(at)thorstenhau(dot)de> wrote:

> Hi,
>
> I want to read an unknown number of rows from a select result. I try
> this:
> - - - Schnipp - - -
> $result = pg_exec($dbh, $statement);
> $row = 0;
> while ($item = pg_fetch_array($result, $row, PGSQL_ASSOC))
> {
> doSomething($item);
> $row++;
> }
> - - - Schnapp - - -
>
> However, I get an error telling me that PHP is "Unable to jump to row
> [$nRows + 1] on PostgreSQL result index 3 in [$file] on line [$line]
>
> What do I miss?
>

your using a while loop to process each result, but the last one which you
expect to return NULL/failure has to evaluate pg_fetch_array first with the
non-existent row index. You may be able to prepend @ to pg_fetch_array to
supress the warning [you should check that $result is not NULL also], but I'd
recommend using pg_NumRows and a for-loop instead.

--
Harry Waddell
Caravan Electronic Publishing