Question

Array in my code is quite big so I pasting it in pastebin. http://pastebin.com/6tviT2Xj

I don’t understand why I am getting endless loop

Logic of this script is:

$it = new ArrayIterator($options);
while($it->valid()) {
    print $it->key();
    print $it->current();
}

Answer 1

Because you never move in you iterator (with ArrayIterator::next()).

while ($it->valid()) {
    ...
    $it->next();
}