Why doesn't this PHP recursive function return the value?

Question

I was working on an API for ustream which returns the following array

Array
(
[results] => Array
    (
        [0] => Array
            (
                 


        

Answer 1

You could use iterators to make your function a whole lot easier:

function findSourceChannel($array)
{
    foreach (new RecursiveIteratorIterator(new RecursiveArrayIterator($array)) as $key => $value) {
        if ($key == 'sourceChannel') {
            return $value['id'];
        }
    }
    return null;
}

That said, I'm not sure why you can't just do a search like this:

foreach ($array['results'] as $result) {
    if (isset($result['sourceChannel'])) {
        return $result['sourceChannel']['id'];
    }
}
return null;