1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
--TEST--
Testing substr() function
--FILE--
<?php
$strings_array = array( "", 12345, "abcdef", "123abc", "_123abc");
$counter = 1;
foreach ($strings_array as $str) {
/* variations with two arguments */
/* start values >, < and = 0 */
echo ("\n--- Iteration ".$counter." ---\n");
echo ("\n-- Variations for two arguments --\n");
var_dump ( substr($str, 1) );
var_dump ( substr($str, 0) );
var_dump ( substr($str, -2) );
/* variations with three arguments */
/* start value variations with length values */
echo ("\n-- Variations for three arguments --\n");
var_dump ( substr($str, 1, 3) );
var_dump ( substr($str, 1, 0) );
var_dump ( substr($str, 1, -3) );
var_dump ( substr($str, 0, 3) );
var_dump ( substr($str, 0, 0) );
var_dump ( substr($str, 0, -3) );
var_dump ( substr($str, -2, 3) );
var_dump ( substr($str, -2, 0 ) );
var_dump ( substr($str, -2, -3) );
$counter++;
}
/* variation of start and length to point to same element */
echo ("\n*** Testing for variations of start and length to point to same element ***\n");
var_dump (substr("abcde" , 2, -2) );
var_dump (substr("abcde" , -3, -2) );
/* Testing to return empty string when start denotes the position beyond the truncation (set by negative length) */
echo ("\n*** Testing for start > truncation ***\n");
var_dump (substr("abcdef" , 4, -4) );
/* String with null character */
echo ("\n*** Testing for string with null characters ***\n");
var_dump (substr("abc\x0xy\x0z" ,2) );
/* String with international characters */
echo ("\n*** Testing for string with international characters ***\n");
var_dump (substr('\xIñtërnâtiônàlizætiøn',3) );
/* start <0 && -start > length */
echo "\n*** Start before the first char ***\n";
var_dump (substr("abcd" , -8) );
/* Omitting length and passing a NULL length */
echo "\n*** Omitting length or using NULL length ***\n";
var_dump (substr("abcdef" , 2) );
var_dump (substr("abcdef" , 2, NULL) );
echo"\nDone";
?>
--EXPECTF--
--- Iteration 1 ---
-- Variations for two arguments --
string(0) ""
string(0) ""
string(0) ""
-- Variations for three arguments --
string(0) ""
string(0) ""
string(0) ""
string(0) ""
string(0) ""
string(0) ""
string(0) ""
string(0) ""
string(0) ""
--- Iteration 2 ---
-- Variations for two arguments --
string(4) "2345"
string(5) "12345"
string(2) "45"
-- Variations for three arguments --
string(3) "234"
string(0) ""
string(1) "2"
string(3) "123"
string(0) ""
string(2) "12"
string(2) "45"
string(0) ""
string(0) ""
--- Iteration 3 ---
-- Variations for two arguments --
string(5) "bcdef"
string(6) "abcdef"
string(2) "ef"
-- Variations for three arguments --
string(3) "bcd"
string(0) ""
string(2) "bc"
string(3) "abc"
string(0) ""
string(3) "abc"
string(2) "ef"
string(0) ""
string(0) ""
--- Iteration 4 ---
-- Variations for two arguments --
string(5) "23abc"
string(6) "123abc"
string(2) "bc"
-- Variations for three arguments --
string(3) "23a"
string(0) ""
string(2) "23"
string(3) "123"
string(0) ""
string(3) "123"
string(2) "bc"
string(0) ""
string(0) ""
--- Iteration 5 ---
-- Variations for two arguments --
string(6) "123abc"
string(7) "_123abc"
string(2) "bc"
-- Variations for three arguments --
string(3) "123"
string(0) ""
string(3) "123"
string(3) "_12"
string(0) ""
string(4) "_123"
string(2) "bc"
string(0) ""
string(0) ""
*** Testing for variations of start and length to point to same element ***
string(1) "c"
string(1) "c"
*** Testing for start > truncation ***
string(0) ""
*** Testing for string with null characters ***
string(6) "c%0xy%0z"
*** Testing for string with international characters ***
string(26) "ñtërnâtiônàlizætiøn"
*** Start before the first char ***
string(4) "abcd"
*** Omitting length or using NULL length ***
string(4) "cdef"
string(4) "cdef"
Done
|
