How to show table based on variable?

[Jack]

I want to display a table on a page based on whether a button is
pressed or not. I'm new at php so I'm sure I'm making a basic
mistake. Here's what I am trying. My thought was that $show_summary
would switch states with each click but it is coming up always true.
So I'm guessing that is the default setting when the page loads. Can
someone please point out where I am going wrong?

if(isset($_POST['summary'])) {
$show_summary = true;
} else {
$show_summary = false;
}

<FORM method="POST" action="testpag e.php">
<INPUT type="submit" name="summary" value="Show Summary">
</FORM>

<?php if ($show_summary == true) { ?>
<table border="1" cellpadding="3" >
<tr>
<td class="smallTex t" align="center" width="80%"><?p hp echo "URL";
?></td>
</tr>
</table>
<?php } ?>

Jack

[Pedro Graca]

Jack wrote:

I want to display a table on a page based on whether a button is
pressed or not.
If the button is not pressed, how does PHP receive the data?
I'm new at php so I'm sure I'm making a basic
mistake. Here's what I am trying. My thought was that $show_summary
would switch states with each click but it is coming up always true.
So I'm guessing that is the default setting when the page loads. Can
someone please point out where I am going wrong?
You have to have a way to post the form /other/ than the submit button
named "summary".

You can do that with another submit button (or maybe with JavaScript).

if(isset($_POST['summary'])) {
$show_summary = true;
} else {
$show_summary = false;
}

<FORM method="POST" action="testpag e.php">
<INPUT type="submit" name="summary" value="Show Summary">

<INPUT type="submit" name="no_summar y" value="Don't Show Summary">

</FORM>

<?php if ($show_summary == true) { ?>
<table border="1" cellpadding="3" >
<tr>
<td class="smallTex t" align="center" width="80%"><?p hp echo "URL";
?></td>
</tr>
</table>
<?php } ?>

HTH

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[Jon Beckett]

On 27 May 2004 10:29:58 -0700, ve****@twmi.rr. com (Jack) wrote:

I want to display a table on a page based on whether a button is
pressed or not. I'm new at php so I'm sure I'm making a basic
mistake. Here's what I am trying. My thought was that $show_summary
would switch states with each click but it is coming up always true.
So I'm guessing that is the default setting when the page loads. Can
someone please point out where I am going wrong?

if(isset($_POS T['summary'])) {
$show_summary = true;
} else {
$show_summary = false;
}

<FORM method="POST" action="testpag e.php">
<INPUT type="submit" name="summary" value="Show Summary">
</FORM>

<?php if ($show_summary == true) { ?>
<table border="1" cellpadding="3" >
<tr>
<td class="smallTex t" align="center" width="80%"><?p hp echo "URL";
?></td>
</tr>
</table>
<?php } ?>

Jack

Keep things more simple...

You don't need the FORM.

Just put an anchor in with a value in the GET data - e.g.
<a href='page.php? field=x'>button </a>

Then check $_GET["field"] to see if it's got anything in it.

If you do use a form,

<form method='POST' action='page.ph p'>
<input type='hidden' name='field' value='x'>
<input type='submit'>
</form>

then in the page, access
$_POST["field"] to see if theres anything in it
Regards

Jonathan Beckett
jonbeckett_at_p luggedout.com
http://www.pluggedout.com/blog

[Jack]

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:

I want to display a table on a page based on whether a button is
pressed or not.

If the button is not pressed, how does PHP receive the data?

I'm new at php so I'm sure I'm making a basic
mistake. Here's what I am trying. My thought was that $show_summary
would switch states with each click but it is coming up always true.
So I'm guessing that is the default setting when the page loads. Can
someone please point out where I am going wrong?

You have to have a way to post the form /other/ than the submit button
named "summary".

You can do that with another submit button (or maybe with JavaScript).

if(isset($_POST['summary'])) {
$show_summary = true;
} else {

$show_summary = false;

}

<FORM method="POST" action="testpag e.php">
<INPUT type="submit" name="summary" value="Show Summary">

<INPUT type="submit" name="no_summar y" value="Don't Show Summary">

</FORM>

<?php if ($show_summary == true) { ?>
<table border="1" cellpadding="3" >
<tr>
<td class="smallTex t" align="center" width="80%"><?p hp echo "URL";
?></td>
</tr>
</table>
<?php } ?>

HTH

Thanks for the help. This does work. I'll look into your suggestion
about javascript too since I would really rather have just the one
button.

Jack

[Jack]

Jon Beckett <jonbeckett@nos pam_yahoo.co.uk > wrote in message news:<r5******* *************** **********@4ax. com>...

On 27 May 2004 10:29:58 -0700, ve****@twmi.rr. com (Jack) wrote:

I want to display a table on a page based on whether a button is
pressed or not. I'm new at php so I'm sure I'm making a basic
mistake. Here's what I am trying. My thought was that $show_summary
would switch states with each click but it is coming up always true.
So I'm guessing that is the default setting when the page loads. Can
someone please point out where I am going wrong?

if(isset($_POS T['summary'])) {
$show_summary = true;
} else { $show_summary = false;

}

<FORM method="POST" action="testpag e.php">
<INPUT type="submit" name="summary" value="Show Summary">
</FORM>

<?php if ($show_summary == true) { ?>
<table border="1" cellpadding="3" >
<tr>
<td class="smallTex t" align="center" width="80%"><?p hp echo "URL";
?></td>
</tr>
</table>
<?php } ?>

Jack

Keep things more simple...

You don't need the FORM.

Just put an anchor in with a value in the GET data - e.g.
<a href='page.php? field=x'>button </a>

Then check $_GET["field"] to see if it's got anything in it.

I tried this but, probably due to my inexperience, I don't see the
difference. If I click on the link and $_GET returns an x, then that
could be the "on" setting. Then, when I click on it again, I need it
to be turned off. But $_GET will still return an x won't it? Am I
totally missing the point?
If you do use a form,

<form method='POST' action='page.ph p'>
<input type='hidden' name='field' value='x'>
<input type='submit'>
</form>

then in the page, access
$_POST["field"] to see if theres anything in it

As I mentioned, I'm new at this so I am probably missing the obvious,
but can you explain to me how $_POST["field"] checks for two different
values since the form is only submitting one?

Regards

Jonathan Beckett
jonbeckett_at_p luggedout.com
http://www.pluggedout.com/blog

[Pedro Graca]

Jack wrote:

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:

> I want to display a table on a page based on whether a button is
> pressed or not.
If the button is not pressed, how does PHP receive the data?

Thanks for the help. This does work. I'll look into your suggestion
about javascript too since I would really rather have just the one
button.

I still don't understand how you're going to submit a form without
pressing a button :-)
Try this:

========
<?php
$hidden = 1;
$show_form = true;
$show_summary = false;
$show_thanks = false;
if (isset($_POST['hidden'])) {
if ($_POST['hidden'] == '1') { $hidden = 2; $show_summary = true; }
if ($_POST['hidden'] == '2') { $hidden = 3; $show_form = false; $show_thanks = true; }
}

if ($show_form) {
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="hidden" value="<?php echo $hidden; ?>"/>
text: <input type="text" name="text" value="text"/>
<input type="submit"/>
</form>
<?php
}

if ($show_summary) {
?>
<br/><br/>Summary:<br/>
The text you entered is: [<strong><?php echo $_POST['text']; ?></strong>]<br/>
<?php
}

if ($show_thanks) {
?>
<p>Thank you!</p>
<p>Turn your computer off, and go read a book.</p>
<?php
}
?>
========

--
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[Jack]

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:
> I want to display a table on a page based on whether a button is
> pressed or not.

If the button is not pressed, how does PHP receive the data?

Thanks for the help. This does work. I'll look into your suggestion
about javascript too since I would really rather have just the one
button.

I still don't understand how you're going to submit a form without
pressing a button :-)

I'm not really wanting to submit a form. That was the only way I
could think of to try to do what I wanted. All I want is a button
that acts as an on/off switch. Press it once and a table is
displayed. Press it again and the table is hidden.
Try this:

========
<?php
$hidden = 1;
$show_form = true;
$show_summary = false;
$show_thanks = false;
if (isset($_POST['hidden'])) {
if ($_POST['hidden'] == '1') { $hidden = 2; $show_summary = true; }
if ($_POST['hidden'] == '2') { $hidden = 3; $show_form = false; $show_thanks = true; }
}

if ($show_form) {
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="hidden" value="<?php echo $hidden; ?>"/>
text: <input type="text" name="text" value="text"/>
<input type="submit"/>
</form>
<?php
}

if ($show_summary) {
?>
<br/><br/>Summary:<br/>
The text you entered is: [<strong><?php echo $_POST['text']; ?></strong>]<br/>
<?php
}

if ($show_thanks) {
?>
<p>Thank you!</p>
<p>Turn your computer off, and go read a book.</p>
<?php
}
?>
========

I do appreciate you taking the time to enter this code but it is
getting farther away from what I need.

Jack

[Moxley Stratton]

Jack wrote:

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:

Pedro Graca <he****@hotpop. com> wrote in message news:<2h******* *****@uni-berlin.de>...

Jack wrote:

>I want to display a table on a page based on whether a button is
>pressed or not.

If the button is not pressed, how does PHP receive the data?

Thanks for the help. This does work. I'll look into your suggestion
about javascript too since I would really rather have just the one
button.

I still don't understand how you're going to submit a form without
pressing a button :-)

I'm not really wanting to submit a form. That was the only way I
could think of to try to do what I wanted. All I want is a button
that acts as an on/off switch. Press it once and a table is
displayed. Press it again and the table is hidden.

If you don't mind using javascript and css:

<script type="text/javascript">
var visibility = 'hidden';
function toggleTable()
{
if( visibility == 'visible' ) visibility = 'hidden';
else visibility = 'visible';

document.getEle mentById('myTab le').style.cssT ext =
'visibility: ' + visibility;
}
</script>

<table id="myTable" style="visibili ty: hidden">
<tr><th>My Table</th></tr>
</table>

<input type="button" onclick="toggle Table()" value="table">
--
-Moxley
moxleystratton. com

[Pedro Graca]

Jack wrote:

I'm not really wanting to submit a form. That was the only way I
could think of to try to do what I wanted. All I want is a button
that acts as an on/off switch. Press it once and a table is
displayed. Press it again and the table is hidden.

As Moxley said you can do it with JavaScript.
If you want to do it with PHP, I think your best bet is to use a session
variable and toggle it with each submit. Then check that toggle and send
(or do not send) the table to the browser; something like:
<?php
session_start() ;
if (!isset($_SESSI ON['table_toggle'])) $_SESSION['table_toggle'] = true;

if (isset($_POST['submit_button'])) {
// reverse table_toggle
$_SESSION['table_toggle'] = !$_SESSION['table_toggle'];
}

if ($_SESSION['table_toggle']) {
// send table to browser
}
?>

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http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
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[Kevin Thorpe]

I'm not really wanting to submit a form. That was the only way I
could think of to try to do what I wanted. All I want is a button
that acts as an on/off switch. Press it once and a table is
displayed. Press it again and the table is hidden.

Can't you use javascript?

<input id='thebutton' type='submit' value='show' onClick='return
showtable()'>
<table id='thetable' style='display: none'>
...
...
</table>

<script language='javas cript'>
function showtable() {
b = document.getEle mentById('thebu tton');
t = document.getEle mentById('theta ble');
if (b.value == 'show') {
b.value = 'hide';
t.style.display = '';
} else {
b.value = 'show';
t.style.display = 'none';
}
}
</script>