how to process a form with multiple checkboxes?

[eluser]wh1tel1te[/eluser]

Code:

function submit()
    {
        //$this->output->enable_profiler(TRUE);
        
        foreach($_POST['plId'] as $plGrp) {
            echo $plGrp; // This is not an array
            echo '<br />';
        };
        
    }