Posting a checkbox group and accessing it in PHP

May 17, 2008 07:25am pdt

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05.09.2008 at 07:09AM PDT, ID: 23389370

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9.6

Posting a checkbox group and accessing it in PHP

Zone: PHP Scripting Language

Hi
I have a form with a checkbox group like this for example:
<input type="checkbox" value="Hank Greenberg" name="checkb[]">Hank Greenberg<br>
<input type="checkbox" value="Stan Musial" name="checkb[]">Stan Musial<br>
<input type="checkbox" value="Willie Mays" name="checkb[]">Willie Mays<br>
<input type="checkbox" value="Joe DiMaggio" name="checkb[]">Joe DiMaggio<br>

I do this to see the contents of the 'checkb' array in PHP:
echo "<pre>";
print_r($_POST['checkb');
echo "</pre>";

but I see nothing

Tried this too:
foreach($_POST['checkb'] as $key => $value)
{
echo "$key, $value<BR>";
}
also doesn't work - doesn't show the contents of my checkbox array.
I am doing something stupid. What is it?
Thanks
tr5

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Question Stats

Zone: Web Development

Question Asked By: tr5

Solution Provided By: hielo

Participating Experts: 4

Solution Grade: A

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05.09.2008 at 07:14AM PDT, ID: 21533012

level9wizard:

I see you have a missing bracket in your code here: print_r($_POST['checkb');

05.09.2008 at 07:14AM PDT, ID: 21533017

Rank: Guru

nplib:

this may sound dumb, but are you checking them, and is your form's method set to post?

form method="post" ...

05.09.2008 at 07:15AM PDT, ID: 21533032

Rank: Master

MrEne:

here you are

                       
                          
                             
                             
                                <form method="post">
<input type="checkbox" value="Hank Greenberg" name="checkb[]">Hank Greenberg<br>
<input type="checkbox" value="Stan Musial" name="checkb[]">Stan Musial<br>
<input type="checkbox" value="Willie Mays" name="checkb[]">Willie Mays<br>
<input type="checkbox" value="Joe DiMaggio" name="checkb[]">Joe DiMaggio<br>
<input type="submit" />
</form>
<br />
<?php if ( !empty ( $_POST ) ) { print_r ( $_POST ); } ?>
<hr />
<?php
if ( is_array ( $_POST['checkb'] ) ) {
	foreach ( $_POST['checkb'] as $k => $v ) {
		print $v . "<br />";
	}
}
?>

                             
                          

                    

Open in New Window

05.09.2008 at 07:16AM PDT, ID: 21533042

level9wizard:

Are you able to get any post values?

try this in a file called test.php:

                       
                                <form method="post" action="test.php">
    <input type="hidden" value="test" name="test_post" />
    <input type="submit" />
</form>
 
<?php
 
echo $_POST['test_post'];
    
?>

Open in New Window

05.09.2008 at 07:19AM PDT, ID: 21533071

Rank: Sage

hielo:

>>foreach($_POST['checkb'] as $key => $value) also doesn't
IF you are actually submitting the form, most likely it is not submitting a POST request. If instead you use:

foreach($_REQUEST['checkb'] as $key => $value)

then you will see the submitted data regardless of whether it is POST or GET

Accepted Solution

05.09.2008 at 07:46AM PDT, ID: 21533364

tr5:

I am using POST. I can see all my other POSTed variables no problem.

This worked (hielo):
echo "<pre>";
print_r($_REQUEST);
echo "</pre>";
It printed :
[checkb] => Array
(
[0] => Hank Greenberg
[1] => Stan Musial
[2] => Willie Mays
[3] => Joe DiMaggio
)

This :
echo "<pre>";
print_r($_POST);
echo "</pre>";
just diplayed:
[checkb] => Array

This:
echo "<pre>";
print_r($_POST['checkb']);
echo "</pre>";
displayed:
Array

REQUEST also worked when using foreach to display the array contents

20080236-EE-VQP-29 / EE_QW_2_20070628