Question

I want to display an error if one of the <input> boxes the user has submitted is empty, but I also want to process the boxes that do not have empty names.

Here is the form: http://jsfiddle.net/Draven/rEPXM/27/

PHP:

if(isset($_POST['addFolder']))
{    
    foreach($_POST['folder'] as $id => $value)
    {
        $database->query('INSERT INTO folders (name) VALUES (?)', array($value));
    }
    $success[] = "Folder(s) added";                 
}

Answer 1

Try as below

foreach($folder as $id => $value)
{
    if($value){
      $database->query('INSERT INTO folders (name) VALUES (?)', array($value));
    }
    else {
       $error[]=$id;
    }
}

$error contains all indexes which doesn’t have value.