How can I get the contents of the largest key of an array of arrays?

[NeedExpertHelp]

Hi,

How can I get the contents of the array key containing the largest amount of data (string) within an array of arrays?

Thanks!

[Readie]

A recursive function involving a lot of foreach and strlen might do it:

[pre]function find_longest_key($input, $out = '') {
  foreach($input as $key => $value) {
    if(strlen($key) > strlen($out)) {
      $out = $key;
    }
    if(is_array($value)) {
      $out = find_longest_key($value, $out);
    }
  }
  return $out;
}[/pre]