checkbox variables

[point86]

Hi.

 

I have a system where the user types things into a few form boxes, and then the system does things accordingly.

 

My problem is as follows.

 

I have a checkbox, defined in index.php as:

 

<input type="checkbox" name="check1" value="" id="check1" onchange="checkcheck(this);">

var ischecked = false;

          function checkcheck(cbObj)

{

          ischecked = cbObj.checked;

          }

 

Now in my search.php file (the back-end of index.php), I want the system to do the following:

 

1. look to see if the index.php checkbox has been ticked by the user

2. if it isn't, just run the system as normal

3. if it is checked, do X instead.

 

How do I do this?

 

I am quite new to PHP so if you could explain things as clearly as possible it would be appreciated!!

 

Thanks!

 

P86

[Balmung-San]

if(isset($_POST['check1']) && $_POST['check1'] == value_here)

{

do X instead

}

else

{

run normal

}

 

That's the basics of it. You still want to sanitize your variables. Also, you'll want some value in your HTML code for it.

[point86]

Thanks very much; what do you mean by "value_here"?

 

P86.

[boo_lolly]

Thanks very much; what do you mean by "value_here"?

 

P86.

 

the checkbox will return one of two value. 0 or 1. as far as i know (i could be wrong) it can also be defined as false or true.

 

0, false = not checked

1, true = checked

 

hope this helps.

[hitman6003]

If you don't specify a value for the checkbox in your html, the $_POST will contain an element where the key is equal to the name (as always) and the value is "on" if it is checked, or simply empty if it is not.

[boo_lolly]

thanks for clearing that up hitman!