get check box value

[hi2you]

Hello,

 

I have a list of check box

 

<form name="form" action="test.php" method="POST">

 

<input type="checkbox" name="option1" value="a"> a<br>

<input type="checkbox" name="option2" value="b" > b<br>

<input type="checkbox" name="option3" value="c"> c<br>

 

</form>

 

and in test.php,  I have a String varible $text, and if a and b are checked, then $text = "ab".

 

if a, c are checked, then $text becomes "ac".

 

How to do so??

 

Thanks!!

[fooDigi]

try this,

 

form page...

<form name="form" action="test.php" method="POST">
<input type="checkbox" name="opt[]" value="a"> a
<input type="checkbox" name="opt[]" value="b" > b
<input type="checkbox" name="opt[]" value="c"> c
<input type="submit" />
</form>

 

test.php...

<?php
foreach($_POST['opt'] as $opt)
$text .= $opt;
echo $text;
?>

[hi2you]

Thanks, I see how it works now, but what if the box is unchecked and I dont want the value of the unchecked into $text??  your example will String up all checked as well as the unchecked values right?

[fooDigi]

it shouldn't, try it

for me it worked

[thebadbad]

or

 

<form action="test.php" method="post">
<input type="checkbox" name="option1" value="a" /> a
<input type="checkbox" name="option2" value="b" /> b
<input type="checkbox" name="option3" value="c" /> c
<input type="submit" />
</form>

 

test.php

<?php
$text = '';
for ($i = 1; $i <= 3; $i++) {
	$text .= $_POST['option'.$i];
}
?>

 

To answer your question, unchecked checkboxes won't get submitted at all.

[hi2you]

Thanks guys!