Re: problems with self referential sticky forms

"eoghan" <php@redry.net> wrote in message news:24A4AA20-7196-4DDD-BD92-60FB93C6DFE9@redry.net... > On 20 Jul 2005, at 02:22, Linda H wrote: > > > fahreheit is here: > > > > <? > > $fahr = $_GET['fahrenheit']; > > if (is_null($fahr)){ echo 'fahr is null';} > > $> > > > > The error was on the line: $fahr = $_GET['fahrenheit']; > > try: > <input name="fahrenheit" type="text" value="<?php echo $fahr; > ?>" /> Do as previously suggested and check that $fahr=isset($_GET['fahrenheit'])?$_GET['fahrenheit']:null; (although since you are dealing with a string here, perhaps an empty string ''might be a better bet than null) then your test is if($fahr==''){echo 'fahr is empty'); note the semicolon at the end of each line, and your closing php tag should be ?>, not $>