1--TEST--
2Test array_multisort() function : usage variation - test sort order of all types
3--FILE--
4<?php
5echo "*** Testing array_multisort() : usage variation  - test sort order of all types***\n";
6
7// Define error handler
8function test_error_handler($err_no, $err_msg, $filename, $linenum) {
9    // We're testing sort order not errors so ignore.
10}
11set_error_handler('test_error_handler');
12
13// define some classes
14class classWithToString {
15    public function __toString() {
16        return "Class A object";
17    }
18}
19
20class classWithoutToString { }
21
22$inputs = array(
23      'int 0' => 0,
24      'float -10.5' => -10.5,
25      array(),
26      'uppercase NULL' => NULL,
27      'lowercase true' => true,
28      'empty string DQ' => "",
29      'string DQ' => "string",
30      'instance of classWithToString' => new classWithToString(),
31      'undefined var' => @$undefined_var,
32);
33
34var_dump(array_multisort($inputs, SORT_STRING));
35var_dump($inputs);
36
37?>
38--EXPECT--
39*** Testing array_multisort() : usage variation  - test sort order of all types***
40bool(true)
41array(9) {
42  ["uppercase NULL"]=>
43  NULL
44  ["empty string DQ"]=>
45  string(0) ""
46  ["undefined var"]=>
47  NULL
48  ["float -10.5"]=>
49  float(-10.5)
50  ["int 0"]=>
51  int(0)
52  ["lowercase true"]=>
53  bool(true)
54  [0]=>
55  array(0) {
56  }
57  ["instance of classWithToString"]=>
58  object(classWithToString)#1 (0) {
59  }
60  ["string DQ"]=>
61  string(6) "string"
62}
63