On Wed, Nov 19, 2008 at 9:32 AM, Craige Leeder <cleeder@xxxxxxxxx> wrote:
> Alain Roger wrote:
>>
>> Hi,
>>
>> how can i do to test if the row number (record number) sent by
>> mysql_fetch_object is odd or even ?
>> i mean that:
>> while ($row = mysql_fetch_object($result))
>> {
>> if($row%2 == 1)
>> {
>> ...
>> }
>> }
>>
>> the $row doesn't return a value... like 1, 2 or 6 for example...
>> thx.
>> F
>>
>>
>
> That's because $row is an object. Return your row uid (unique identifier;
> primary key w/ auto increment) and do:
>
> while ( $row = mysql_fetch_object($result) )
> {
> if( $row->UID % 2 == 1 )
> {
> ...
> }
> }
>
>
>
> replacing UID with whatever you called the field in the database.
>
> Hope this helps,
> - Craige
>
That only works if the query returns rows with contiguous IDs, which
is not always the case. If rows get deleted there will be gaps in an
autonumber field. Even if no rows are deleted, it is quite common for
a query to return rows with non-adjacent ID numbers because of the
query conditions. It's better to use the counter approach that Nathan
demonstrated.
Andrew
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