generating a FAIL message

[phppup]

I am using this code to evaluate whether checkboxes within a group have been selected:

    
    function IsChecked($chkname,$value)
    {
        if(!empty($_POST[$chkname]))
        {
            foreach($_POST[$chkname] as $chkval)
            {
                if($chkval == $value)
                {
                    return true;
                }
            }
        }
        return false;
    }

Now, I've decided that I want to add a message upon finding NO SELECTED checkbox items, but it is not functioning as desired.

 if(empty($_POST[$chkname]))
	  {
	    echo("You didn't select any checkboxes.");        
        }

How can I get this or something similar to trigger?

[Barand]

Only checkboxes that have been checked are posted. If it's there it's checked. If it's not there it ain't.

[phppup]

That makes an incredible amount of sense.

Will something like if($value=null) or value==zero work for me?

[Barand]

To check if it's there
 

if ( isset($_POST['checkname']) ) {

     // it's there - process it

}