sorteren van 2 kolommen (Opgelost)

for ... {
  $sortable[$naam] = $value;
}
sort($sortable);
$sortedNames = array_keys($sortable);

for ... {
  $sortable[$naam] = $value;
}
sort($sortable);
$sortedNames = array_keys($sortable);

for ($i... {
  $both[$i][0] = $value;
  $both[$i][1] = $name;
}
sort($both)

for ($i... {
  $both[$i][0] = $value;
  $both[$i][1] = $name;
}
sort($both)