PHP Recursive Iterator: Parent key of current array iteration? - php

Question

I have an array like this:
$arr = array(
$foo = array(
'donuts' => array(
'name' => 'lionel ritchie',
'animal' => 'manatee',
)
)
);
Using that magic of the 'SPL Recursive Iterator' and this code:
$bar = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr));
foreach($bar as $key => $value)
{
echo $key . ": " . $value . "<br>";
}
I can traverse the multidimensional array and return the key => value pairs, such as:
name: lionel ritchie
animal: manatee
However, I need to return the PARENT element of the current iterated array as well, so...
donuts name: lionel richie
donuts animal: manatee
Is this possible?
(I've only become aware of all the 'Recursive Iterator' stuff, so if I'm missing something obvious, I apologise.)

Answer 1

You can access the iterator via getSubIterator, and in your case you want the key:
<?php
$arr = array(
$foo = array(
'donuts' => array(
'name' => 'lionel ritchie',
'animal' => 'manatee',
)
)
);
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr));
foreach ($iterator as $key => $value) {
// loop through the subIterators...
$keys = array();
// in this case i skip the grand parent (numeric array)
for ($i = $iterator->getDepth()-1; $i>0; $i--) {
$keys[] = $iterator->getSubIterator($i)->key();
}
$keys[] = $key;
echo implode(' ',$keys).': '.$value.'<br>';
}
?>