RE: [PHP] how to say "inverse your value" (to a boolean)?

Then YOU have more aggressive error_reporting than the default setting turned on. You might consider turning it down a notch. NOTICEs are basically useless and bloat your code IMHO -- and apparently the PHP devs too as per this... http://us2.php.net/manual/en/function.error-reporting.php // Report all errors except E_NOTICE // This is the default value set in php.ini error_reporting(E_ALL ^ E_NOTICE); Don't tell me what to do! You're not my father! ;-) http://daevid.com "Some people, when confronted with a problem, think 'I know, I'll use XML.'" Now they have two problems. > -----Original Message----- > From: Martin Scotta [mailto:martinscotta@gmail.com] > Sent: Monday, August 10, 2009 5:39 PM > To: Daevid Vincent > Cc: PHP-General List > Subject: Re: [PHP] how to say "inverse your value" (to a boolean)? > > 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 > <daevid@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:lists@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 >