Question

Let’s say you have an array like this:

array
(
    ['one'] => array (
                      ['wantedkey'] => 5
                      ['otherkey1'] => 6
                      ['otherkey2'] => 7
                     )
    ['two'] =>  => array (
                      ['otherkey1'] => 5
                      ['otherkey2'] => 6
                      ['wantedkey'] => 7
                     )
    ['three'] =>  => array (
                      ['otherkey1'] => 5
                      ['wantedkey'] => 6
                      ['otherkey2'] => 7
                     )
)

---

If you apply sth like this to the array you get all instances of ‘wantedkey’:

function test_print($item, $key) {
  if ($key === 'wantedkey') {
    print $item;
  }
}

array_walk_recursive($myarray, 'test_print');

But array_walk_recursive doesn’t tell me (afaik) where I am in the array….is there any way to track the position where ‘wantedkey’ has been found in the example above with array_walk_recursive?

Any hint is highly appreciated, thanks in advance! 🙂
I know this has been asked before but I’m wondering if anyone has found a solution yet…

Answer 1

Use RecursiveArrayIterator if you need to track element position and hierarchy.