PHP -> Pick value from two-dimensional array based on key - php

Question

I need to pick a value based on a specific key from an two-dimensional array, how would I do that?
I only know the key of the second level in the array in my code, and not in which array key it sits in level 1...
example:
Array
(
[0] => Array
(
[1] => http://stackoverflow.com/
)
[1] => Array
(
[0] => http://www.google.com
)
[2] => Array
(
[20567] => http://www.yahoo.com
)
)
Now I would like to pick the value of the key 20567 dynamically, I don't know where it sits in level 1, could be 0, 1,2 or any other key.
I hope I explained that well enough :)

Answer 1

You could use a RecursiveArrayIterator and RecursiveIteratorIterator:
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));
foreach ($iterator as $key => $value) {
if ($key == 20567) {
var_dump($value);
break;
}
}
Example in a function:
function valueForKey($array, $key) {
$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));
foreach ($iterator as $arrayKey => $arrayValue) {
if ($arrayKey == $key) {
return $arrayValue
}
}
return null;
}

Answer 2

Another option is: (should work)
function getURLbyRedirects($redirectNumber , $array)
{
foreach($array as $lvl => $elems)
{
if(array_key_exists($redirectNumber , $elems))
return $elems[$redirectNumber];
}
return false;
}
By the way , consider using a different structre for this array, something like this:
Array (
[0] => Array
(
[url] => http://stackoverflow.com/
[redirects] => 2067
)