Use... $dr = !$dr
if you want.... Notice: Undefined variable: dr All variables MUST be initialized before using. If you PHP does not complains about it you should read about error_reporting On Mon, Aug 10, 2009 at 8:18 PM, Daevid Vincent <dae...@daevid.com> wrote: > NO! For the love of God and all that is holy, don't do that accumulator / > mod "hack". > That's sooooo 1980's. And why make the CPU do all that math for every > row... > > Just do this. It's quick and simple: > > CSS: > .dataRow1 { background-color: #DFDFDF; } > .dataRow2 { background-color: #FFFFFF; } > > foreach ($foo_array as $foo) { > ?><tr class="<?= ($dr = !$dr) ? "dataRow1" : "dataRow2" ?>"><td><?= $foo > ?></td></tr><?php > } > > No need to initialize $dr as by default PHP will make it a boolean "false", > then each itteration, it will toggle true/false and substitute the CSS > class > > > -----Original Message----- > > From: Jim Lucas [mailto:li...@cmsws.com] > > Sent: Monday, August 10, 2009 4:03 PM > > To: John Butler > > Cc: PHP-General List > > Subject: Re: [PHP] how to say "inverse your value" (to a boolean)? > > > > John Butler wrote: > > > quick Q: > > > I have this inside a foreach{} that I want to alternate > > between on and > > > off so I can alternate the background-color of my <tr>'s. > > > > > > $tableRowBGcolorBoolCounter != $tableRowBGcolorBoolCounter; > > //-boolean > > > on and off > > > > > > I am looking thru' docs and books, but can't remember (nor > > find now) in > > > PHP how to say "inverse your value" (to a boolean). > > > ? > > > > > > TIA! -G > > > > > > > > > > <?php > > > > $arr = range(1, 10); > > > > $i = 0; > > foreach ( $arr AS $row ) { > > > > $row_color = ( ( $i++ % 2 ) ? 'green' : 'red'); > > > > echo $row_color; > > > > } > > > > ?> > > > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Martin Scotta