1--TEST--
2Test array_keys() function (variation - 1)
3--FILE--
4<?php
5
6echo "\n*** Testing array_keys() on various arrays ***";
7$arrays = array(
8  array(),
9  array(0),
10  array( array() ),
11  array("Hello" => "World"),
12  array("" => ""),
13  array(1,2,3, "d" => array(4,6, "d")),
14  array("a" => 1, "b" => 2, "c" =>3, "d" => array()),
15  array(0 => 0, 1 => 1, 2 => 2, 3 => 3),
16  array(0 =>3.000, 1 =>2, 1 =>3, "a"=>3, 3=>5, "5"=>3.000),
17  array(TRUE => TRUE, FALSE => FALSE, NULL => NULL, "\x000", "\000"),
18  array("a" => "abcd", "a" => "", "ab" => -6, "cd" => -0.5 ),
19  array(0 => array(), 1=> array(0), 2 => array(1), ""=> array(),""=>"" )
20);
21
22$i = 0;
23/* loop through to test array_keys() with different arrays */
24foreach ($arrays as $array) {
25  echo "\n-- Iteration $i --\n";
26  var_dump(array_keys($array));
27  $i++;
28}
29
30echo "Done\n";
31?>
32--EXPECT--
33*** Testing array_keys() on various arrays ***
34-- Iteration 0 --
35array(0) {
36}
37
38-- Iteration 1 --
39array(1) {
40  [0]=>
41  int(0)
42}
43
44-- Iteration 2 --
45array(1) {
46  [0]=>
47  int(0)
48}
49
50-- Iteration 3 --
51array(1) {
52  [0]=>
53  string(5) "Hello"
54}
55
56-- Iteration 4 --
57array(1) {
58  [0]=>
59  string(0) ""
60}
61
62-- Iteration 5 --
63array(4) {
64  [0]=>
65  int(0)
66  [1]=>
67  int(1)
68  [2]=>
69  int(2)
70  [3]=>
71  string(1) "d"
72}
73
74-- Iteration 6 --
75array(4) {
76  [0]=>
77  string(1) "a"
78  [1]=>
79  string(1) "b"
80  [2]=>
81  string(1) "c"
82  [3]=>
83  string(1) "d"
84}
85
86-- Iteration 7 --
87array(4) {
88  [0]=>
89  int(0)
90  [1]=>
91  int(1)
92  [2]=>
93  int(2)
94  [3]=>
95  int(3)
96}
97
98-- Iteration 8 --
99array(5) {
100  [0]=>
101  int(0)
102  [1]=>
103  int(1)
104  [2]=>
105  string(1) "a"
106  [3]=>
107  int(3)
108  [4]=>
109  int(5)
110}
111
112-- Iteration 9 --
113array(5) {
114  [0]=>
115  int(1)
116  [1]=>
117  int(0)
118  [2]=>
119  string(0) ""
120  [3]=>
121  int(2)
122  [4]=>
123  int(3)
124}
125
126-- Iteration 10 --
127array(3) {
128  [0]=>
129  string(1) "a"
130  [1]=>
131  string(2) "ab"
132  [2]=>
133  string(2) "cd"
134}
135
136-- Iteration 11 --
137array(4) {
138  [0]=>
139  int(0)
140  [1]=>
141  int(1)
142  [2]=>
143  int(2)
144  [3]=>
145  string(0) ""
146}
147Done
148