--TEST--
Bug #25671 (subarrays not copied correctly)
--FILE--
<?php
  $arr = array(
    "This is string one.",
    "This is string two.",
    array(
        "This is another string.",
        "This is a last string."),
    "This is a last string.");

  echo serialize(str_replace("string", "strung", $arr)) . "\n";
  echo serialize(str_replace("string", "strung", $arr)) . "\n";
  echo serialize(str_replace(" ", "", $arr)) . "\n";
  echo serialize(str_replace(" ", "", $arr)) . "\n";
?>
--EXPECTF--
Warning: Array to string conversion in %s on line %d
a:4:{i:0;s:19:"This is strung one.";i:1;s:19:"This is strung two.";i:2;s:5:"Array";i:3;s:22:"This is a last strung.";}

Warning: Array to string conversion in %s on line %d
a:4:{i:0;s:19:"This is strung one.";i:1;s:19:"This is strung two.";i:2;s:5:"Array";i:3;s:22:"This is a last strung.";}

Warning: Array to string conversion in %s on line %d
a:4:{i:0;s:16:"Thisisstringone.";i:1;s:16:"Thisisstringtwo.";i:2;s:5:"Array";i:3;s:18:"Thisisalaststring.";}

Warning: Array to string conversion in %s on line %d
a:4:{i:0;s:16:"Thisisstringone.";i:1;s:16:"Thisisstringtwo.";i:2;s:5:"Array";i:3;s:18:"Thisisalaststring.";}