PHP: get keys of independent arrays

Question

I have two arrays.

Example of the first array:

$arrayOne = array
(
    \'fruit\' => array(
        \'apples\' => array(),
        \'oranges\' => array(),
         


        

Answer 1

$arrayOne = //...

$arrayTwo = //...

function getPosition(array $arr, $key) {
    $it = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr),
        RecursiveIteratorIterator::SELF_FIRST);
    $pos = array();
    foreach ($it as $k => $v) {
        if (count($pos) - 1 > $it->getDepth()) {
            array_pop($pos);
            $pos[$it->getDepth()]++;
        }
        elseif (count($pos) - 1 < $it->getDepth()) {
            array_push($pos, 0);
        }
        else {
            $pos[$it->getDepth()]++;
        }
        if ($k === $key) {
            return $pos;
        }
    }
}

function getElementKey(array $arr, array $position) {
    $cur = $arr;
    $curkey = null;
    foreach ($position as $p) {
        reset($cur);
        for ($i = 0; $i < $p; $i++) {
            next($cur);
        }
        $curkey = key($cur);
        $cur = current($cur);
    }
    return $curkey;
}

var_dump(getPosition($arrayOne, "battlestar-galactica"));
var_dump(getElementKey($arrayTwo, array(1, 3, 1)));

gives:

array(3) {
  [0]=>
  int(1)
  [1]=>
  int(3)
  [2]=>
  int(1)
}
string(19) "tablestar-neglectia"

You can feed the result of getPosition to getElementKey:

getElementKey($arrayTwo, getPosition($arrayOne, "battlestar-galactica"));

Answer 2

Check out array_keys from both arrays and then map the positions. Like array_keys for your arrays will give you -

$arrayKeyOne = array('fruit', 'vegetables', 'meat', 'other');
$arrayKeyTwo = array('frewt', 'vetchteblz', 'meat', 'mother');

Then a $arrayKeyTwo[array_search($one, $arrayKeyOne)] shuld give you what you want. Let know if this helps.