1--TEST--
2Test mb_substr() function : usage variations - pass unexpected arguments (including strings) in place of $str
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 $str to mb_substr() to test behaviour
17 */
18
19echo "*** Testing mb_substr() : usage variations ***\n";
20
21// Initialise function arguments not being substituted
22$start = 0;
23$length = 5;
24
25//get an unset variable
26$unset_var = 10;
27unset ($unset_var);
28
29// get a class
30class classA
31{
32  public function __toString() {
33    return "Class A object";
34  }
35}
36
37// heredoc string
38$heredoc = <<<EOT
39hello world
40EOT;
41
42// get a resource variable
43$fp = fopen(__FILE__, "r");
44
45// unexpected values to be passed to $str argument
46$inputs = array(
47
48       // int data
49/*1*/  0,
50       1,
51       12345,
52       -2345,
53
54       // float data
55/*5*/  10.5,
56       -10.5,
57       12.3456789000e10,
58       12.3456789000E-10,
59       .5,
60
61       // null data
62/*10*/ NULL,
63       null,
64
65       // boolean data
66/*12*/ true,
67       false,
68       TRUE,
69       FALSE,
70
71       // empty data
72/*16*/ "",
73       '',
74
75       // string data
76/*18*/ "string",
77       'string',
78       $heredoc,
79
80       // object data
81/*21*/ new classA(),
82
83       // undefined data
84/*22*/ @$undefined_var,
85
86       // unset data
87/*23*/ @$unset_var,
88
89       // resource variable
90/*24*/ $fp
91);
92
93// loop through each element of $inputs to check the behavior of mb_substr()
94$iterator = 1;
95foreach($inputs as $input) {
96  echo "\n-- Iteration $iterator --\n";
97  var_dump( mb_substr($input, $start, $length));
98  $iterator++;
99};
100
101fclose($fp);
102echo "Done";
103?>
104--EXPECTF--
105*** Testing mb_substr() : usage variations ***
106
107-- Iteration 1 --
108string(1) "0"
109
110-- Iteration 2 --
111string(1) "1"
112
113-- Iteration 3 --
114string(5) "12345"
115
116-- Iteration 4 --
117string(5) "-2345"
118
119-- Iteration 5 --
120string(4) "10.5"
121
122-- Iteration 6 --
123string(5) "-10.5"
124
125-- Iteration 7 --
126string(5) "12345"
127
128-- Iteration 8 --
129string(5) "1.234"
130
131-- Iteration 9 --
132string(3) "0.5"
133
134-- Iteration 10 --
135string(0) ""
136
137-- Iteration 11 --
138string(0) ""
139
140-- Iteration 12 --
141string(1) "1"
142
143-- Iteration 13 --
144string(0) ""
145
146-- Iteration 14 --
147string(1) "1"
148
149-- Iteration 15 --
150string(0) ""
151
152-- Iteration 16 --
153string(0) ""
154
155-- Iteration 17 --
156string(0) ""
157
158-- Iteration 18 --
159string(5) "strin"
160
161-- Iteration 19 --
162string(5) "strin"
163
164-- Iteration 20 --
165string(5) "hello"
166
167-- Iteration 21 --
168string(5) "Class"
169
170-- Iteration 22 --
171string(0) ""
172
173-- Iteration 23 --
174string(0) ""
175
176-- Iteration 24 --
177
178Warning: mb_substr() expects parameter 1 to be string, resource given in %s on line %d
179NULL
180Done
181