$a = array ( 'a' => 0 , 'b' => 0 , 'c' => 0);
$b = array ( 'b' => 12 , 'c' => 3 , 'a' => 5);

print_r(array_merge($a,$b));

// special handling for checkboxes (let them unchecked)
$aCheckboxes = array(
    'activation_mail'   => 0,
    'checkedin_mail'    => 0,
    'locked_mail'       => 0,
    'unlocked_mail'     => 0,
    'checkedout_mail'   => 0,
    'max_illustrations_disabled' => 0,
    'max_uploadsize_disabled'    => 0);

$aDefaultForm = array(
    'title'             => '',
    'max_illustrations' => 10,
    'max_uploadsize'    => 512,
    'activation_mail'   => 1,
    'checkedin_mail'    => 1,
    'checkedout_mail'   => 1);

if (isset($_POST['project'])) {
    // checkboxes
    $aForm = array_merge($aCheckboxes, $_POST['project']);
} else {
    $aForm = array_merge($aCheckboxes, $aDefaultForm);
}

$oTemplate->assign('project', $aForm);

if (isset($_POST['project'])) {