1--TEST--
2Test prev() function : usage variation - Pass different data types as $array_arg
3--FILE--
4<?php
5/* Prototype  : mixed prev(array $array_arg)
6 * Description: Move array argument's internal pointer to the previous element and return it
7 * Source code: ext/standard/array.c
8 */
9
10/*
11 * Pass different data types as $array_arg argument to prev() to test behaviour
12 */
13
14echo "*** Testing prev() : variation ***\n";
15
16//get an unset variable
17$unset_var = 10;
18unset ($unset_var);
19
20// get a class
21class classA
22{
23  public function __toString() {
24    return "Class A object";
25  }
26}
27
28// heredoc string
29$heredoc = <<<EOT
30hello world
31EOT;
32
33// get a resource variable
34$fp = fopen(__FILE__, "r");
35
36// unexpected values to be passed to $array_arg argument
37$inputs = array(
38
39       // int data
40/*1*/  0,
41       1,
42       12345,
43       -2345,
44
45       // float data
46/*5*/  10.5,
47       -10.5,
48       12.3456789000e10,
49       12.3456789000E-10,
50       .5,
51
52       // null data
53/*10*/ NULL,
54       null,
55
56       // boolean data
57/*12*/ true,
58       false,
59       TRUE,
60       FALSE,
61
62       // empty data
63/*16*/ "",
64       '',
65       array(),
66
67       // string data
68/*19*/ "string",
69       'string',
70       $heredoc,
71
72       // object data
73/*22*/ new classA(),
74
75       // undefined data
76/*23*/ @$undefined_var,
77
78       // unset data
79/*24*/ @$unset_var,
80
81       // resource variable
82/*25*/ $fp
83);
84
85// loop through each element of $inputs to check the behavior of prev()
86$iterator = 1;
87foreach($inputs as $input) {
88  echo "\n-- Iteration $iterator --\n";
89  var_dump( prev($input) );
90  $iterator++;
91};
92
93fclose($fp);
94?>
95===DONE===
96--EXPECTF--
97*** Testing prev() : variation ***
98
99-- Iteration 1 --
100
101Warning: prev() expects parameter 1 to be array, integer given in %s on line %d
102NULL
103
104-- Iteration 2 --
105
106Warning: prev() expects parameter 1 to be array, integer given in %s on line %d
107NULL
108
109-- Iteration 3 --
110
111Warning: prev() expects parameter 1 to be array, integer given in %s on line %d
112NULL
113
114-- Iteration 4 --
115
116Warning: prev() expects parameter 1 to be array, integer given in %s on line %d
117NULL
118
119-- Iteration 5 --
120
121Warning: prev() expects parameter 1 to be array, float given in %s on line %d
122NULL
123
124-- Iteration 6 --
125
126Warning: prev() expects parameter 1 to be array, float given in %s on line %d
127NULL
128
129-- Iteration 7 --
130
131Warning: prev() expects parameter 1 to be array, float given in %s on line %d
132NULL
133
134-- Iteration 8 --
135
136Warning: prev() expects parameter 1 to be array, float given in %s on line %d
137NULL
138
139-- Iteration 9 --
140
141Warning: prev() expects parameter 1 to be array, float given in %s on line %d
142NULL
143
144-- Iteration 10 --
145
146Warning: prev() expects parameter 1 to be array, null given in %s on line %d
147NULL
148
149-- Iteration 11 --
150
151Warning: prev() expects parameter 1 to be array, null given in %s on line %d
152NULL
153
154-- Iteration 12 --
155
156Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d
157NULL
158
159-- Iteration 13 --
160
161Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d
162NULL
163
164-- Iteration 14 --
165
166Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d
167NULL
168
169-- Iteration 15 --
170
171Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d
172NULL
173
174-- Iteration 16 --
175
176Warning: prev() expects parameter 1 to be array, string given in %s on line %d
177NULL
178
179-- Iteration 17 --
180
181Warning: prev() expects parameter 1 to be array, string given in %s on line %d
182NULL
183
184-- Iteration 18 --
185bool(false)
186
187-- Iteration 19 --
188
189Warning: prev() expects parameter 1 to be array, string given in %s on line %d
190NULL
191
192-- Iteration 20 --
193
194Warning: prev() expects parameter 1 to be array, string given in %s on line %d
195NULL
196
197-- Iteration 21 --
198
199Warning: prev() expects parameter 1 to be array, string given in %s on line %d
200NULL
201
202-- Iteration 22 --
203bool(false)
204
205-- Iteration 23 --
206
207Warning: prev() expects parameter 1 to be array, null given in %s on line %d
208NULL
209
210-- Iteration 24 --
211
212Warning: prev() expects parameter 1 to be array, null given in %s on line %d
213NULL
214
215-- Iteration 25 --
216
217Warning: prev() expects parameter 1 to be array, resource given in %s on line %d
218NULL
219===DONE===
220