RE: [PHP-DB] HTML Forms question...

I think it's because you're incrementing $a BEFORE you echo it out. That would cause your echo statement to start at the second item [1]. > -----Original Message----- > From: NIPP, SCOTT V (SBCSI) [mailto:sn4265@sbc.com] > Sent: Tuesday, November 19, 2002 3:36 PM > To: '1LT John W. Holmes'; 'Ryan Jameson (USA)'; php-db@lists.php.net > Subject: RE: [PHP-DB] HTML Forms question... > > > OK. This has been most helpful, but now I am getting something > strange. The first element of the array of data is behaving > strangely. For > the code snippet below I am not getting the first selected element > displayed: > > <?php > ... Some stuff snipped... > $a = 0; > ?> > <?php > while (isset($_POST['system'][$a])) { > $a++; > echo $_POST['system'][$a]; > } > ?> > > The second, third, and so forth selections all print, > just not the > first one. Also, I can test the contents of the first > element by placing an > echo before the while loop. Thanks in advance. > > > -----Original Message----- > From: 1LT John W. Holmes [mailto:holmes072000@charter.net] > Sent: Tuesday, November 19, 2002 11:11 AM > To: NIPP, SCOTT V (SBCSI); 'Ryan Jameson (USA)'; php-db@lists.php.net > Subject: Re: [PHP-DB] HTML Forms question... > > > > OK. If I am using the POST method and the checkbox 'name' for all > > of the checkboxes is 'system', how do I access the results? I am > > researching on the PHP site trying to figure out what this > array is, and > how > > I access this if the index name is the same for all > elements. I am hoping > > that this data will be in an array and I can simply loop through the > > contents of the array. If this data is stored in a hash > (Perl word for > this > > type of array, not sure if it's the same in PHP), how do I > access this > data > > since the index for every element would be the same? > > I am SURE that I am probably missing some important conceptual > > issues here, but still learning as I go. Unfortunately, > this probably > means > > that I will be completely rewriting this application at > least once in the > > future. Oh well, live and learn. Thanks again for the help. > > If you have multiple checkboxes with the same 'name' then you > should name > then with brackets, [], such as 'system[]'. This will tell > PHP to make the > results an array when the form is submitted. > > For any of the 'submit[]' checkboxes that are checked, they > will be present > in PHP array on the processing page. Those unchecked will not > be present. > > Say you have the following. > > <input type="checkbox" name="submit[]" value="1">One > <input type="checkbox" name="submit[]" value="2">Two > <input type="checkbox" name="submit[]" value="3">Three > > If the method on your form is POST, and the user checks One > and Three, then > you'll have the following values in PHP on the ACTION page of > the FORM. > > $_POST['submit'][0] ==> 1 > $_POST['submit'][1] ==> 3 > > From that data, though, there's no way to tell that checkbox > "Two" was not > checked, unless you go through and check all of the values. > That's fine for > small forms, but a hassle for large ones. > > You could also name your checkboxes like this: > > <input type="checkbox" name="submit[1]" value="1">One > <input type="checkbox" name="submit[2]" value="2">Two > <input type="checkbox" name="submit[3]" value="3">Three > > and if the user checks one and three again, you'll get > > $_POST['submit'][1] ==> 1 > $_POST['submit'][3] ==> 3 > > Hopefully that clears some things up. If you have any other > questions, just > ask. > > ---John Holmes... > > -- > PHP Database Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php >