Ive been going crazy about this shit for a couple of months now! AND FINALLY SOME ONE DOES THE TRICK! :D

Cant thank you enough!

You can definitely do it that way, but it gets tedious if you have a lot of checkboxes – to have to pay attention to it in both your HTML and the PHP code. Consider the situation where you’re matching submitted form data against database field – only the matching set gets saved, you either have to manually write-in checks for every single checkbox field (a pain and error-prone if you forget one), or you can do something like this and not have to worry about it.

if ( empty($_POST['box1']) ) {
$my_value = 0;
} else {
$my_value = $_POST['box1'];
}

Or we can also evaluate for isset instead of empty().

And with this we may not even need the hidden input helper there on the form.

No?

class MyBean {
…
Boolean checkval;
…
public void setCheckval (boolean b) {
if (checkval == null)
checkval = b;
else
checkval = checkval | b;
}
…
}

That will OR all of the “checkval” parameters together, but still leave MyBean.checkval as null if none were specified. If you aren’t using a bean, you can still apply similar logic when going through the request parameter map (go through the entire array of “checkval” values and do the same thing).