RE: [PHP] Need some advice concerning forms (multi select pulldown) and arrays
Shouldn't it be
count($_REQUEST['animals'])
and
count($_REQUEST['animals'][2]), etc...
??
---John Holmes...
> -Original Message-
> From: Victor Spång Arthursson [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, May 26, 2002 1:29 PM
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: [PHP] Need some advice concerning forms (multi select
> pulldown) and arrays
>
> Ok, I can't get this right...
>
> Have the following code:
>
>
>$choices = array(1 => 'dog', 2 => 'cat', 3 => 'mouse', 4 =>
'frog');
>
> if (is_array($_REQUEST['animals']))
> {
> // get the number of selectcases
> echo "get the number of selectcases: " . count($animals)
.
> "";
>
> // get the number of provided selects from select with
name
> "2"
> echo "get the number of provided selects from select
with name
> \"2\": " . count($animals[2]) . "";
>
> // test to print some data
> echo $animals[2][0]. "";
> echo $animals[2][1]. "";
> echo $animals[2][2]. "";
> echo $animals[2][3]. "";
> }
>?>
>
>
> dog
> cat
> mouse
> frog
>
>
>
> dog
> cat
> mouse
> frog
>
>
>
> Why does it not work?
>
> // get the number of selectcases
> echo "get the number of selectcases: " . count($animals)
.
> "";
>
> This works great
>
> // get the number of provided selects from select with
name
> "2"
> echo "get the number of provided selects from select
with name
> \"2\": " . count($animals[2]) . "";
>
> But this doesn't...
>
> Thankful for any help,
>
> /Victor
>
> On Sunday, May 26, 2002, at 05:35 PM, John Holmes wrote:
>
> > You can supply an "whateverID" for the select if you want to.
> >
> >
> > >
> >
> >
> > >
> >
> > etc...
> >
> > That will give you an array $select[] on the processing page. If the
> > selects are multi-selects, you'll have a multidimensional array. The
> > first chosen element in the first select box can be referenced like
this
> >
> > $select[0][0]
> >
> > You can get a count of how many select boxes there are by doing
> >
> > count($select);
> >
> > You can get a count of how many elements were selected within a
select
> > you can do this:
> >
> > count($select[x]);
> >
> > Where x is the number of the select box you want to know about.
> >
> > Confusing, eh?
> >
> > ---John Holmes...
> >
> >> -Original Message-
> >> From: Victor Spång Arthursson [mailto:[EMAIL PROTECTED]]
> >> Sent: Sunday, May 26, 2002 7:44 AM
> >> To: [EMAIL PROTECTED]
> >> Subject: Re: [PHP] Need some advice concerning forms (multi select
> >> pulldown) and arrays
> >>
> >>
> >> On Sunday, May 26, 2002, at 01:14 PM, John Holmes wrote:
> >>
> >>> Just give each select its own name.
> >>
> >> Can't do that, don't know from time to time how many there'll
be
> > And
> >> I've to have some case which iterates on the following page...
> >>
> >>> Or name them all the same followed
> >>> by an [] and you'll end up with a multi-dimensional array if
things
> > go
> >>> right...
> >>
> >> Sounds better - but I've a lot of items and I'ld like to know which
of
> >> the arrays that go to which item... Can I just write
> >>
name=array[whateverid] and then in some way reveal the
whateverid's?
> >>
> >> Sincerely
> >>
> >> Victor
> >
> >
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Re: [PHP] Need some advice concerning forms (multi select pulldown)and arrays
On Sun, 26 May 2002, Victor Spång Arthursson wrote: > change this to: > and this to: because you want animals[2] and animals[4] to be arrays, not scalar values. miguel -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Need some advice concerning forms (multi select pulldown) and arrays
Ok, I can't get this right...
Have the following code:
'dog', 2 => 'cat', 3 => 'mouse', 4 => 'frog');
if (is_array($_REQUEST['animals']))
{
// get the number of selectcases
echo "get the number of selectcases: " . count($animals) . "";
// get the number of provided selects from select with name "2"
echo "get the number of provided selects from select with name
\"2\": " . count($animals[2]) . "";
// test to print some data
echo $animals[2][0]. "";
echo $animals[2][1]. "";
echo $animals[2][2]. "";
echo $animals[2][3]. "";
}
?>
dog
cat
mouse
frog
dog
cat
mouse
frog
Why does it not work?
// get the number of selectcases
echo "get the number of selectcases: " . count($animals) . "";
This works great
// get the number of provided selects from select with name "2"
echo "get the number of provided selects from select with name
\"2\": " . count($animals[2]) . "";
But this doesn't...
Thankful for any help,
/Victor
On Sunday, May 26, 2002, at 05:35 PM, John Holmes wrote:
> You can supply an "whateverID" for the select if you want to.
>
>
>
>
>
>
>
> etc...
>
> That will give you an array $select[] on the processing page. If the
> selects are multi-selects, you'll have a multidimensional array. The
> first chosen element in the first select box can be referenced like this
>
> $select[0][0]
>
> You can get a count of how many select boxes there are by doing
>
> count($select);
>
> You can get a count of how many elements were selected within a select
> you can do this:
>
> count($select[x]);
>
> Where x is the number of the select box you want to know about.
>
> Confusing, eh?
>
> ---John Holmes...
>
>> -Original Message-
>> From: Victor Spång Arthursson [mailto:[EMAIL PROTECTED]]
>> Sent: Sunday, May 26, 2002 7:44 AM
>> To: [EMAIL PROTECTED]
>> Subject: Re: [PHP] Need some advice concerning forms (multi select
>> pulldown) and arrays
>>
>>
>> On Sunday, May 26, 2002, at 01:14 PM, John Holmes wrote:
>>
>>> Just give each select its own name.
>>
>> Can't do that, don't know from time to time how many there'll be
> And
>> I've to have some case which iterates on the following page...
>>
>>> Or name them all the same followed
>>> by an [] and you'll end up with a multi-dimensional array if things
> go
>>> right...
>>
>> Sounds better - but I've a lot of items and I'ld like to know which of
>> the arrays that go to which item... Can I just write
>>
name=array[whateverid] and then in some way reveal the whateverid's?
>>
>> Sincerely
>>
>> Victor
>
>
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Re: [PHP] Need some advice concerning forms (multi select pulldown) and arrays
On Sunday, May 26, 2002, at 01:14 PM, John Holmes wrote: > Just give each select its own name. Can't do that, don't know from time to time how many there'll be And I've to have some case which iterates on the following page... > Or name them all the same followed > by an [] and you'll end up with a multi-dimensional array if things go > right... Sounds better - but I've a lot of items and I'ld like to know which of the arrays that go to which item... Can I just write name=array[whateverid] and then in some way reveal the whateverid's? Sincerely Victor -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Need some advice concerning forms (multi select pulldown) and arrays
Just give each select its own name. Or name them all the same followed
by an [] and you'll end up with a multi-dimensional array if things go
right...
...
---John Holmes...
> -Original Message-
> From: Victor Spång Arthursson [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, May 26, 2002 5:49 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [PHP] Need some advice concerning forms (multi select
> pulldown) and arrays
>
> Hello and thanks for your fast answer!
>
> I'ld like to know if there is any possibility to distinguish the
selects
> if I've multiple multiple selects, that is, more than one on the same
> page? What I'm loooking for is the possibility to have an unknown
number
> of multiple selects on the same page
>
> Is it possible? Anyone who can describe how to do this or provide a
link
> to some tutorial? And also, where in the manual can I read about this?
>
> Sincerely,
>
> Victor
>
> On lördag, maj 25, 2002, at 08:59 , Miguel Cruz wrote:
>
> > Have a play with this little program - it should demonstrate all of
the
> > things you'd want to do with getting data in and out of mult
selects. If
> > it doesn't work, you may have an older version of PHP - in that
case,
> > change "$_REQUEST" to "$HTTP_POST_VARS" and "$_SERVER['PHP_SELF']"
to
> > "$PHP_SELF".
> >
> > ---
> >>
> > $choices = array(1 => 'dog', 2 => 'cat', 3 => 'mouse', 4 =>
'frog');
> >
> > if (is_array($_REQUEST['animals']))
> > {
> > print 'You chose:';
> > foreach ($_REQUEST['animals'] as $animal_id)
> > print "{$choices[$animal_id]}";
> > print '';
> > }
> >
> > ?>
> >>
> > foreach ($choices as $id => $name)
> > print ' > . (in_array($id, $_REQUEST['animals']) ? 'selected ' : '')
> > . "value='$id'>$name";
> >
> > ?>
> >
>
>
> --
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Re: [PHP] Need some advice concerning forms (multi select pulldown) and arrays
Hello and thanks for your fast answer!
I'ld like to know if there is any possibility to distinguish the selects
if I've multiple multiple selects, that is, more than one on the same
page? What I'm loooking for is the possibility to have an unknown number
of multiple selects on the same page
Is it possible? Anyone who can describe how to do this or provide a link
to some tutorial? And also, where in the manual can I read about this?
Sincerely,
Victor
On lördag, maj 25, 2002, at 08:59 , Miguel Cruz wrote:
> Have a play with this little program - it should demonstrate all of the
> things you'd want to do with getting data in and out of mult selects. If
> it doesn't work, you may have an older version of PHP - in that case,
> change "$_REQUEST" to "$HTTP_POST_VARS" and "$_SERVER['PHP_SELF']" to
> "$PHP_SELF".
>
> ---
>
> $choices = array(1 => 'dog', 2 => 'cat', 3 => 'mouse', 4 => 'frog');
>
> if (is_array($_REQUEST['animals']))
> {
> print 'You chose:';
> foreach ($_REQUEST['animals'] as $animal_id)
> print "{$choices[$animal_id]}";
> print '';
> }
>
> ?>
>
> foreach ($choices as $id => $name)
> print ' . (in_array($id, $_REQUEST['animals']) ? 'selected ' : '')
> . "value='$id'>$name";
>
> ?>
>
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Re: [PHP] Need some advice concerning forms (multi select pulldown)and arrays
Oops. I actually tried running it (cleverly waiting until after I posted
it to the list) and I see that there are some warnings in the event that
nothing has been selected (due to in_array operating on an undefined
variable). Don't worry about them. Or change that last foreach clause to
look like this:
foreach ($choices as $id => $name)
print '$name";
(I added an is_array to make sure we don't send a null value as the second
argument to in_array).
miguel
On Sat, 25 May 2002, Miguel Cruz wrote:
> Have a play with this little program - it should demonstrate all of the
> things you'd want to do with getting data in and out of mult selects. If
> it doesn't work, you may have an older version of PHP - in that case,
> change "$_REQUEST" to "$HTTP_POST_VARS" and "$_SERVER['PHP_SELF']" to
> "$PHP_SELF".
>
> ---
>
> $choices = array(1 => 'dog', 2 => 'cat', 3 => 'mouse', 4 => 'frog');
>
> if (is_array($_REQUEST['animals']))
> {
> print 'You chose:';
> foreach ($_REQUEST['animals'] as $animal_id)
> print "{$choices[$animal_id]}";
> print '';
> }
>
> ?>
>
> foreach ($choices as $id => $name)
> print ' . (in_array($id, $_REQUEST['animals']) ? 'selected ' : '')
> . "value='$id'>$name";
>
> ?>
>
> ---
> miguel
>
>
>
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Re: [PHP] Need some advice concerning forms (multi select pulldown)and arrays
On Sat, 25 May 2002, Victor Spång Arthursson wrote:
> I know it's possible to use arrays in combination with forms, but I need
> some advice about where to find some information/tutorial concerning how
> to use arrays together with "multi-select-tags"...
Have a play with this little program - it should demonstrate all of the
things you'd want to do with getting data in and out of mult selects. If
it doesn't work, you may have an older version of PHP - in that case,
change "$_REQUEST" to "$HTTP_POST_VARS" and "$_SERVER['PHP_SELF']" to
"$PHP_SELF".
---
'dog', 2 => 'cat', 3 => 'mouse', 4 => 'frog');
if (is_array($_REQUEST['animals']))
{
print 'You chose:';
foreach ($_REQUEST['animals'] as $animal_id)
print "{$choices[$animal_id]}";
print '';
}
?>
$name)
print '$name";
?>
---
miguel
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