Create and Clean up array from form fields.

[denoteone]

i have my form with 5 fields that are not required to be filled out.

<input class="inputbg" type="text" name="MAC[]"  />
<input class="inputbg" type="text" name="MAC[]"  />
<input class="inputbg" type="text" name="MAC[]"  />
<input class="inputbg" type="text" name="MAC[]"  />
<input class="inputbg" type="text" name="MAC[]"  />

 

On my process page I want to remove all of the empty index's that did not have data entered. I am new to sending array data via POST do I need to do anything else other then what is below?

 

            

    foreach($MAC as $key => $value) {
                  if($value == "") {
                     unset($MAC[$key]);
                   }
            }

            $mac_addresses = array_values($MAC); 

  if(empty($mac_addresses)){ 
      $error = "You did not enter any MAC adresses.";
     $valid = "false";
    }

[AbraCadaver]

Probably simpler:

 

if(!$mac_addresses = array_filter($_POST['MAC'])) {
   $error = "You did not enter any MAC adresses.";
   $valid = "false";
}