1--TEST--
2Test mb_substr() function : usage variations - Pass different data types as $encoding arg
3--SKIPIF--
4<?php
5extension_loaded('mbstring') or die('skip');
6function_exists('mb_substr') or die("skip mb_substr() is not available in this build");
7?>
8--FILE--
9<?php
10/* Prototype  : string mb_substr(string $str, int $start [, int $length [, string $encoding]])
11 * Description: Returns part of a string
12 * Source code: ext/mbstring/mbstring.c
13 */
14
15/*
16 * Pass different data types as $encoding argument to mb_substr() to test behaviour
17 * Where possible, 'UTF-8' is entered as string value
18 */
19
20echo "*** Testing mb_substr() : usage variations ***\n";
21
22// Initialise function arguments not being substituted
23$str = b'string_val';
24$start = 1;
25$length = 5;
26
27//get an unset variable
28$unset_var = 10;
29unset ($unset_var);
30
31// get a class
32class classA
33{
34  public function __toString() {
35    return "UTF-8";
36  }
37}
38
39// heredoc string
40$heredoc = <<<EOT
41UTF-8
42EOT;
43
44// get a resource variable
45$fp = fopen(__FILE__, "r");
46
47// unexpected values to be passed to $input argument
48$inputs = array(
49
50       // int data
51/*1*/  0,
52       1,
53       12345,
54       -2345,
55
56       // float data
57/*5*/  10.5,
58       -10.5,
59       12.3456789000e10,
60       12.3456789000E-10,
61       .5,
62
63       // null data
64/*10*/ NULL,
65       null,
66
67       // boolean data
68/*12*/ true,
69       false,
70       TRUE,
71       FALSE,
72
73       // empty data
74/*16*/ "",
75       '',
76
77       // string data
78/*18*/ "UTF-8",
79       'UTF-8',
80       $heredoc,
81
82       // object data
83/*21*/ new classA(),
84
85       // undefined data
86/*22*/ @$undefined_var,
87
88       // unset data
89/*23*/ @$unset_var,
90
91       // resource variable
92/*24*/ $fp
93);
94
95// loop through each element of $inputs to check the behavior of mb_substr
96$iterator = 1;
97foreach($inputs as $input) {
98  echo "\n-- Iteration $iterator --\n";
99  $res = mb_substr($str, $start, $length, $input);
100  if ($res === false) {
101     var_dump($res);
102  }
103  else {
104     var_dump(bin2hex($res));
105  }
106  $iterator++;
107};
108
109fclose($fp);
110echo "Done";
111?>
112--EXPECTF--
113*** Testing mb_substr() : usage variations ***
114
115-- Iteration 1 --
116
117Warning: mb_substr(): Unknown encoding "0" in %s on line %d
118bool(false)
119
120-- Iteration 2 --
121
122Warning: mb_substr(): Unknown encoding "1" in %s on line %d
123bool(false)
124
125-- Iteration 3 --
126
127Warning: mb_substr(): Unknown encoding "12345" in %s on line %d
128bool(false)
129
130-- Iteration 4 --
131
132Warning: mb_substr(): Unknown encoding "-2345" in %s on line %d
133bool(false)
134
135-- Iteration 5 --
136
137Warning: mb_substr(): Unknown encoding "10.5" in %s on line %d
138bool(false)
139
140-- Iteration 6 --
141
142Warning: mb_substr(): Unknown encoding "-10.5" in %s on line %d
143bool(false)
144
145-- Iteration 7 --
146
147Warning: mb_substr(): Unknown encoding "123456789000" in %s on line %d
148bool(false)
149
150-- Iteration 8 --
151
152Warning: mb_substr(): Unknown encoding "1.23456789E-9" in %s on line %d
153bool(false)
154
155-- Iteration 9 --
156
157Warning: mb_substr(): Unknown encoding "0.5" in %s on line %d
158bool(false)
159
160-- Iteration 10 --
161
162Warning: mb_substr(): Unknown encoding "" in %s on line %d
163bool(false)
164
165-- Iteration 11 --
166
167Warning: mb_substr(): Unknown encoding "" in %s on line %d
168bool(false)
169
170-- Iteration 12 --
171
172Warning: mb_substr(): Unknown encoding "1" in %s on line %d
173bool(false)
174
175-- Iteration 13 --
176
177Warning: mb_substr(): Unknown encoding "" in %s on line %d
178bool(false)
179
180-- Iteration 14 --
181
182Warning: mb_substr(): Unknown encoding "1" in %s on line %d
183bool(false)
184
185-- Iteration 15 --
186
187Warning: mb_substr(): Unknown encoding "" in %s on line %d
188bool(false)
189
190-- Iteration 16 --
191
192Warning: mb_substr(): Unknown encoding "" in %s on line %d
193bool(false)
194
195-- Iteration 17 --
196
197Warning: mb_substr(): Unknown encoding "" in %s on line %d
198bool(false)
199
200-- Iteration 18 --
201string(10) "7472696e67"
202
203-- Iteration 19 --
204string(10) "7472696e67"
205
206-- Iteration 20 --
207string(10) "7472696e67"
208
209-- Iteration 21 --
210string(10) "7472696e67"
211
212-- Iteration 22 --
213
214Warning: mb_substr(): Unknown encoding "" in %s on line %d
215bool(false)
216
217-- Iteration 23 --
218
219Warning: mb_substr(): Unknown encoding "" in %s on line %d
220bool(false)
221
222-- Iteration 24 --
223
224Warning: mb_substr() expects parameter 4 to be string, resource given in %s on line %d
225string(0) ""
226Done
227
228