1--TEST--
2Test array_diff() function : basic functionality
3--FILE--
4<?php
5/* Prototype  : array array_diff(array $arr1, array $arr2 [, array ...])
6 * Description: Returns the entries of $arr1 that have values which are not present
7 * in any of the others arguments.
8 * Source code: ext/standard/array.c
9 */
10
11/*
12 * Test basic functionality of array_diff
13 */
14
15echo "*** Testing array_diff() : basic functionality ***\n";
16
17//Test indexed array with integers as elements
18$array_int1 = array (1, 2, 3, 4);
19$array_int2 = array (3, 4, 5, 6);
20
21echo "-- Test indexed array with integers as elements --\n";
22var_dump(array_diff($array_int1, $array_int2));
23var_dump(array_diff($array_int2, $array_int1));
24
25
26//Test indexed array with strings as elements
27$array_string1 = array ('one', 'two', 'three', 'four');
28$array_string2 = array ('three', 'four', 'five', 'six');
29
30echo "-- Test indexed array with strings as elements --\n";
31var_dump(array_diff($array_string1, $array_string2));
32var_dump(array_diff($array_string2, $array_string1));
33
34//Test associative array with strings as keys and integers as elements
35$array_assoc_int1 = array ('one' => 1, 'two' => 2, 'three' => 3, 'four' => 4);
36$array_assoc_int2 = array ('three' => 3, 'four' => 4, 'five' => 5, 'six' => 6);
37
38echo "-- Test associative array with strings as keys and integers as elements --\n";
39var_dump(array_diff($array_assoc_int1, $array_assoc_int2));
40var_dump(array_diff($array_assoc_int2, $array_assoc_int1));
41
42//Test associative array with strings as keys and elements
43$array_assoc_str1 = array ('one' => 'un', 'two' => 'deux', 'three' => 'trois', 'four' => 'quatre');
44$array_assoc_str2 = array ('three' => 'trois', 'four' => 'quatre', 'five' => 'cinq', 'six' => 'six');
45
46echo "-- Test associative array with strings as keys and integers as elements --\n";
47var_dump(array_diff($array_assoc_str1, $array_assoc_str2));
48var_dump(array_diff($array_assoc_str2, $array_assoc_str1));
49
50echo "-- Test array_diff with more than 2 arguments --\n";
51var_dump(array_diff($array_int1, $array_int2, $array_string1, $array_string2));
52
53echo "Done";
54?>
55--EXPECT--
56*** Testing array_diff() : basic functionality ***
57-- Test indexed array with integers as elements --
58array(2) {
59  [0]=>
60  int(1)
61  [1]=>
62  int(2)
63}
64array(2) {
65  [2]=>
66  int(5)
67  [3]=>
68  int(6)
69}
70-- Test indexed array with strings as elements --
71array(2) {
72  [0]=>
73  string(3) "one"
74  [1]=>
75  string(3) "two"
76}
77array(2) {
78  [2]=>
79  string(4) "five"
80  [3]=>
81  string(3) "six"
82}
83-- Test associative array with strings as keys and integers as elements --
84array(2) {
85  ["one"]=>
86  int(1)
87  ["two"]=>
88  int(2)
89}
90array(2) {
91  ["five"]=>
92  int(5)
93  ["six"]=>
94  int(6)
95}
96-- Test associative array with strings as keys and integers as elements --
97array(2) {
98  ["one"]=>
99  string(2) "un"
100  ["two"]=>
101  string(4) "deux"
102}
103array(2) {
104  ["five"]=>
105  string(4) "cinq"
106  ["six"]=>
107  string(3) "six"
108}
109-- Test array_diff with more than 2 arguments --
110array(2) {
111  [0]=>
112  int(1)
113  [1]=>
114  int(2)
115}
116Done
117