first, set up the array something like:
$artist("Bon Jovi","N\'Sync","Boyzone","Britney Spears","Jethro Tull",
"Crosby\, Stills & Nash"); // note escape slash before single quote and
comma I think they'll be needed, but maybe not.
then set up your checkbox array something like:
<?php
print <form action=test.php method=GET>
for ($i=0;$i<=count($artist)-1;$i++)
{
print "<input type=checkbox name=artist[$i]
value=\'$artist[$i]\'>$artist[$i]"; // The escape slashes are important here
}
print <input type=submit name=submit>
print </form>
if (isset($submit))
{
for ($i=0;$i<=count($artist)-1;$i++)
{
if (isset($artist[$i])) print $artist[$i];
if (isset($artist[$i])) $number=$number+1;
}
print $number;
if ($number=="0") die ("go back and select something"); / / or do
something else here.
}
The above is untested especially the array set up, but the rest should give
you a hint on how to do what you want.
Hugh
----- Original Message -----
From: "Michael P. Carel" <[EMAIL PROTECTED]>
To: "php" <[EMAIL PROTECTED]>
Sent: Wednesday, January 23, 2002 11:31 PM
Subject: [PHP] Displaying array of elements problem
> Hi there,
>
> I have another problem out here. Im using the for loop to display an array
> of element in the checkbox form.
> My problem is how could i set the this if to an error message if their are
a
> NULL selection. By default this will display blank for no selection which
i
> whant to be avoided. I dont know what particular variable should i declare
> if there are NULL selection so that i can incorporate that in an error
> script.
>
> Please help me.
>
>
> Sample script:
>
> <?
> // check for $submit
> if (!$submit)
> {
> // and display form
> ?>
> <form action="test.php" method="GET">
for
> <input type="checkbox" name="artist[]" value="Bon Jovi">Bon Jovi
> <input type="checkbox" name="artist[]" value="N'Sync">N'Sync
> <input type="checkbox" name="artist[]" value="Boyzone">Boyzone
> <input type="checkbox" name="artist[]" value="Britney Spears">Britney
Spears
> <input type="checkbox" name="artist[]" value="Jethro Tull">Jethro Tull
> <input type="checkbox" name="artist[]" value="Crosby, Stills &
> Nash">Crosby, Stills & Nash
> <br>
> <input type="submit" name="submit" value="Select">
> </form>
> <?
> }
> // or display the selected artists
> else
> {
>
> ?>
> <b>And here are your selections:</b>
> <br>
> <?
> -----error script line should be here----------
>
>
> for($count = 0; $count < sizeof($artist); $count++)
> {
> echo "<i>$artist[$count]</i><br>";
> }
>
> }
> ?>
>
>
>
>
> Regards,
> Mike
>
>
>
> --
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