Question

I have a checkbox group which works fine when you tick one but it returns an error if all are left unticked.

Here’s the code:

foreach ($_SESSION['CheckboxGroup1'] as $val) {
$checkbox1results .= $val.",\n";
}

This is the error I’m getting back:

Warning: Invalid argument supplied for foreach() in 
/home/medicom/public_html/memberappform1.php on line 492

I’m not great with php so need a way to return nothing in the loop if nothing is ticked.

Answer 1

if( is_array($_SESSION['CheckboxGroup1']) ){
    foreach ($_SESSION['CheckboxGroup1'] as $val) {
        $checkbox1results .= $val.",\n";
    }
}