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get checkbox value

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Join Date: Nov 2006

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fariba123

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get checkbox value

Nov 27th, 2006

i have a form with multiple checkbox. how to get the values that are checked.

pls give a quick reaply.

thanks

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Phaelax

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Re: get checkbox value

Nov 27th, 2006

var checkBox = document.getElementById(boxID);
checkBoxValue = checkBox.value;

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Join Date: Nov 2006

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the_count

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Re: get checkbox value

Nov 27th, 2006

if you are posting it using a PHP form
then you will use something like that

($_POST['checkboxname] == "ON")

if you want to see what checkboxes are checked you have to declare them as an array then loop through them

see this link

http://www.daniweb.com/techtalkforums/thread62312.html

The day will soon come.

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nickclarson nickclarson is offline

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Re: get checkbox value

Nov 27th, 2006

Or if you are talking about a group of checkboxes with the same name you would do something like this:

page_html.php

 Help with Code Tags 
 PHP Syntax (Toggle Plain Text) 
<form method="post" action="">
<input type="checkbox" id="things[]" value="red"> Cat<br>
<input type="checkbox" id="things[]" value="blue"> Mouse<br>
<input type="checkbox" id="things[]" value="green"> Car<br>
<input type="checkbox" id="things[]" value="yellow"> DaniWeb
</form>
<form method="post" action="">
<input type="checkbox" id="things[]" value="red"> Cat<br>
<input type="checkbox" id="things[]" value="blue"> Mouse<br>
<input type="checkbox" id="things[]" value="green"> Car<br>
<input type="checkbox" id="things[]" value="yellow"> DaniWeb
</form>

page_php.php

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
<?php
$things = serialize($_POST['things']);
 
$query = "INSERT INTO table(things) values($things)";
mysql_query($query) or die(mysql_error());
?>
<?php
$things = serialize($_POST['things']);

$query = "INSERT INTO table(things) values($things)";
mysql_query($query) or die(mysql_error());
?>

basically just turn it into an array and dump the crap into a db. Notice that you have to "serialize" the data first and don't forget to "unserialize" when you are taking the data back out of the db (selecting).

You will then most likely have to implement a loop when you take the "crap" out of the db (as it will be in an array). The following link is a really good article on this, I would check it out.

Storing form array data to MySQL using PHP