1--TEST--
2Test shuffle() function : basic functionality - array with default keys
3--FILE--
4<?php
5/* Prototype  : bool shuffle(array $array_arg)
6 * Description: Randomly shuffle the contents of an array
7 * Source code: ext/standard/array.c
8*/
9
10/*
11* Test behaviour of shuffle when an array with default keys
12* is passed to the 'array_arg' argument and check for the
13* changes in the input array by printing the input array
14* before and after shuffle() function is applied on it
15*/
16
17echo "*** Testing shuffle() : with arrays having default keys ***\n";
18
19// Initialise the array with integers
20$array_arg_int = array(0, 10, 20, 30, 40, 50, 60, 70, 80);
21
22// Initialise the array with strings
23$array_arg_strings = array("one", 'two', 'three', "four", "five", " ", 'six', ' ', "seven");
24
25/* Testing shuffle() function with array of integers */
26
27// printing the input array with integers before the shuffle operation
28echo "\n-- input array of integers before shuffle() function is applied --\n";
29var_dump( $array_arg_int );
30
31// applying shuffle() function on the input array of integers
32echo "\n-- return value from shuffle() function --\n";
33var_dump( shuffle($array_arg_int) );  // prints the return value from shuffle() function
34
35echo "\n-- resultant array after shuffle() function is applied --\n";
36var_dump( $array_arg_int );
37
38/* Testing shuffle() function with array of strings */
39
40// printing the input array with strings before the shuffle operation
41echo "\n-- input array of strings before shuffle() function is applied --\n";
42var_dump( $array_arg_strings );
43
44// applying shuffle() function on the input array of strings
45echo "\n-- return value from shuffle() function --\n";
46var_dump( shuffle($array_arg_strings) );  // prints the return value from shuffle() function
47
48echo "\n-- resultant array after shuffle() function is applied --\n";
49var_dump( $array_arg_strings );
50
51echo "Done";
52?>
53--EXPECTF--
54*** Testing shuffle() : with arrays having default keys ***
55
56-- input array of integers before shuffle() function is applied --
57array(9) {
58  [0]=>
59  int(0)
60  [1]=>
61  int(10)
62  [2]=>
63  int(20)
64  [3]=>
65  int(30)
66  [4]=>
67  int(40)
68  [5]=>
69  int(50)
70  [6]=>
71  int(60)
72  [7]=>
73  int(70)
74  [8]=>
75  int(80)
76}
77
78-- return value from shuffle() function --
79bool(true)
80
81-- resultant array after shuffle() function is applied --
82array(9) {
83  [0]=>
84  int(%d)
85  [1]=>
86  int(%d)
87  [2]=>
88  int(%d)
89  [3]=>
90  int(%d)
91  [4]=>
92  int(%d)
93  [5]=>
94  int(%d)
95  [6]=>
96  int(%d)
97  [7]=>
98  int(%d)
99  [8]=>
100  int(%d)
101}
102
103-- input array of strings before shuffle() function is applied --
104array(9) {
105  [0]=>
106  string(3) "one"
107  [1]=>
108  string(3) "two"
109  [2]=>
110  string(5) "three"
111  [3]=>
112  string(4) "four"
113  [4]=>
114  string(4) "five"
115  [5]=>
116  string(1) " "
117  [6]=>
118  string(3) "six"
119  [7]=>
120  string(1) " "
121  [8]=>
122  string(5) "seven"
123}
124
125-- return value from shuffle() function --
126bool(true)
127
128-- resultant array after shuffle() function is applied --
129array(9) {
130  [0]=>
131  string(%d) "%s"
132  [1]=>
133  string(%d) "%s"
134  [2]=>
135  string(%d) "%s"
136  [3]=>
137  string(%d) "%s"
138  [4]=>
139  string(%d) "%s"
140  [5]=>
141  string(%d) "%s"
142  [6]=>
143  string(%d) "%s"
144  [7]=>
145  string(%d) "%s"
146  [8]=>
147  string(%d) "%s"
148}
149Done
150
151