Convert PHP object to array

obj_to_array.php

<?php
function object_to_array($data, $visited = array()) {
  if (!is_array($data) and !is_object($data)) {
    return $data;
  }
  if (is_object($data)) {
    // Detect object cycles, overwise recursion occurs.
    $hash = spl_object_hash($data);
    if (isset($visited[$hash])) {
      return '** RECURSION **';
    }
    $visited[$hash] = TRUE;
    $data = (array) $data;
  }
  $ret = array();
  foreach ($data as $key => $value) {
    if (is_object($value) || is_array($value)) {
      $value = object_to_array($value, $visited);
    }
    // Remove private and protected properties NULL delimited prefix.
    if ($key[0] === "\x00") {
      $property_name = substr($key, strpos($key, "\x0", 1));
    }
    else {
      $property_name = $key;
    }
    $ret[$property_name] = $value;
  }
  return $ret;
}