Wierd Array Result

Anon

I have a few checkboxes in a form with the name='list[]' and a value.

Now on the next page, where the form gets submitted to, im imploding it, to get it into a comma sperated varaible.

$csv = implode($list, ",");

Now if print $csv i get:

on,on,on

what the heck is this about?

Derek C.

Anon

checkboxes either return 'on' or 'off'

originally i expected 1 or 0. justhave a little script to go through the array and convert first ifyouwant

Anon

Well this is odd because what im trying to do i have done many times.

Have a form with checkboxes, whith the name, and a value.

On the next page, would create an string comma seperated, then do:

$csv = implode($del, ",");

mysql_query("DELETE FROM table WHERE ID IN($csv)");

what it should do is return the values of the checkboxes that were checked. I dont know why all of a sudden its doing it like this now.

Derek

Anon

Here is an example of how it will print the value of the checkbox:

<?
if ($page == 'submit')
{
$csvID = implode($list, ",");

echo $csvID;
}
else
{
?>
<form action="<?echo $PHP_SELF;?>?page=submit" method="post">
<input type="Checkbox" name="list[]" value="1">
<input type="Checkbox" name="list[]" value="2">
<input type="Submit" name="submit">
</form>
<?
}
?>

Now basicaly this is exactly whatim doing, but isntead of the value of, its pretting 'on'

Still Confused...

Derek C.

Anon

When submitting a checkbox, a browser sends name=on if it's checked, and... nothing if it's not. You may find this a bit strange (I do). To distinguish what checkboxes are checked, you can give different names to them or use the following technique :

In HTML form :

name='list[1]'
...
name='list[n]'

In PHP :

for($i=1;$i<=$n;$i++)
{
if(isset($list[$i]))
print "Checkbox $i is on";
else
print "Checkbox $i is off";
}

Anon

Ok i understand that (its still wierd) that it sais if its on or not, but the example i just posted, works and will print the value...

Anon

Problem solved...
It will return on, if the box is checked and has no value

it will return the value if the box is checked and has a value

it will return off if the box is not checked and does not have any value.

Anon

Are you sure you get "off" if the box is not checked ? What browser do you use ? With IE4, nothing is transmitted (not even the name).

Anon

Olivier wrote:

When submitting a checkbox, a browser sends name=on if it's checked, and... nothing if it's not.

Not if you give the checkbox a value:

If you tick that checkbox then the browser will submit
abox=avalue. In fact, I recommend that all checkboxes be given the value "on". That way you don't have to worry about different browsers possibly doing different things when the checkbox has no value.