--TEST--
Bug #42850 (array_walk_recursive() leaves references)
--FILE--
<?php
function apply_dumb($item, $key)
{
}
// Bug #34982
function myfunc($data)
{
    array_walk_recursive($data, 'apply_changed');
}
function apply_changed(&$input, $key)
{
    $input = 'changed';
}
function main()
{
    // Bug #42850
    $data = array('key1' => 'val1', array('key2' => 'val2'));
    var_dump($data);
    array_walk_recursive($data, 'apply_dumb');
    $data2 = $data;
    $data2[0] = 'altered';
    var_dump($data);
    var_dump($data2);
    myfunc($data);
    var_dump($data);
}
?>
--EXPECT--
array(2) {
  ["key1"]=>
  string(4) "val1"
  [0]=>
  array(1) {
    ["key2"]=>
    string(4) "val2"
  }
}
array(2) {
  ["key1"]=>
  string(4) "val1"
  [0]=>
  array(1) {
    ["key2"]=>
    string(4) "val2"
  }
}
array(2) {
  ["key1"]=>
  string(4) "val1"
  [0]=>
  string(7) "altered"
}
array(2) {
  ["key1"]=>
  string(4) "val1"
  [0]=>
  array(1) {
    ["key2"]=>
    string(4) "val2"
  }
}