Form processing $_POST to variables automatically

Question

I have about 40 items in my FORM and i'm trying to give all the Name= properties a variable for process without having to write each out manually. am I missing something here, cause the code below is not working. (name="comp1", name="comp2"... $comp1, $comp2)

$en = array_merge($em, $_POST);
$valid = true; 
foreach($_POST as $value) { 
    if(!isset($value)) { 
        $valid = false;
    } 
}

Answer 1

If something is not in $_POST, the foreach will not loop through it. Isset() will always return true, because the foreach loops through all values in $_POST.