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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
|
<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Implements PMA_StringByte interface using the "mbstring" extension.
*
* @package PhpMyAdmin-String
* @subpackage MB
*/
if (! defined('PHPMYADMIN')) {
exit;
}
require_once 'libraries/StringByte.int.php';
/**
* Implements PMA_StringByte interface using the "mbstring" extension.
*
* @package PhpMyAdmin-String
* @subpackage MB
*/
class PMA_StringMB implements PMA_StringByte
{
/**
* Returns length of string depending on current charset.
*
* @param string $string string to count
*
* @return int|false string length
*/
public function strlen($string)
{
return mb_strlen($string);
}
/**
* Returns substring from string, works depending on current charset.
*
* @param string $string string to count
* @param int $start start of substring
* @param int $length length of substring
*
* @return string|false the sub string
*/
public function substr($string, $start, $length = 2147483647)
{
$stringLength = $this->strlen($string);
if ($stringLength <= $start) {
return false;
}
if ($stringLength + $length < $start) {
return false;
}
return mb_substr($string, $start, $length, 'utf-8');
}
/**
* Returns number of substring from string.
*
* @param string $string string to check
* @param int $needle string to count
*
* @return int number of substring from the string
*/
public function substrCount($string, $needle)
{
return mb_substr_count($string, $needle, 'utf-8');
}
/**
* Returns position of $needle in $haystack or false if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param int $offset the search offset
*
* @return int|false position of $needle in $haystack or false
*/
public function strpos($haystack, $needle, $offset = 0)
{
if (null === $haystack) {
return false;
}
if (false === $needle) {
return false;
}
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
return mb_strpos($haystack, $needle, $offset);
}
/**
* Returns position of $needle in $haystack - case insensitive - or false if
* not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param int $offset the search offset
*
* @return int|false position of $needle in $haystack or false
*/
public function stripos($haystack, $needle, $offset = 0)
{
if (null === $haystack) {
return false;
}
if (false === $needle) {
return false;
}
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
return mb_stripos($haystack, $needle, $offset);
}
/**
* Returns position of last $needle in $haystack or false if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param int $offset the search offset
*
* @return int|false position of last $needle in $haystack or false
*/
public function strrpos($haystack, $needle, $offset = 0)
{
if (null === $haystack) {
return false;
}
if (false === $needle) {
return false;
}
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
return mb_strrpos($haystack, $needle, $offset);
}
/**
* Returns position of last $needle in $haystack - case insensitive - or false
* if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param int $offset the search offset
*
* @return int|false position of last $needle in $haystack or false
*/
public function strripos($haystack, $needle, $offset = 0)
{
if (null === $haystack) {
return false;
}
if (false === $needle) {
return false;
}
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
return mb_strripos($haystack, $needle, $offset);
}
/**
* Returns part of $haystack string starting from and including the first
* occurrence of $needle to the end of $haystack or false if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param bool $before_needle the part before the needle
*
* @return string|false part of $haystack or false
*/
public function strstr($haystack, $needle, $before_needle = false)
{
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
if (!is_string($haystack) || !is_string($needle) || null === $needle) {
return false;
}
return mb_strstr($haystack, $needle, $before_needle);
}
/**
* Returns part of $haystack string starting from and including the first
* occurrence of $needle to the end of $haystack - case insensitive - or false
* if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
* @param bool $before_needle the part before the needle
*
* @return string|false part of $haystack or false
*/
public function stristr($haystack, $needle, $before_needle = false)
{
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
if (!is_string($haystack) || !is_string($needle) || null === $needle) {
return false;
}
return mb_stristr($haystack, $needle, $before_needle);
}
/**
* Returns the portion of haystack which starts at the last occurrence or false
* if not found
*
* @param string $haystack the string being checked
* @param string $needle the string to find in haystack
*
* @return string|false portion of haystack which starts at the last occurrence or
* false
*/
public function strrchr($haystack, $needle)
{
if (!is_string($needle) && is_numeric($needle)) {
$needle = (int)$needle;
$needle = $this->chr($needle);
}
if (!is_string($haystack) || !is_string($needle) || null === $needle) {
return false;
}
return mb_strrchr($haystack, $needle);
}
/**
* Make a string lowercase
*
* @param string $string the string being lowercased
*
* @return string the lower case string
*/
public function strtolower($string)
{
return mb_strtolower($string);
}
/**
* Make a string uppercase
*
* @param string $string the string being uppercased
*
* @return string the upper case string
*/
public function strtoupper($string)
{
return mb_strtoupper($string);
}
/**
* Get the ordinal value of a multibyte string
* (Adapted from http://www.php.net/manual/en/function.ord.php#72463)
*
* @param string $string the string for which ord is required
*
* @return string the ord value
*/
public function ord($string)
{
if (false === $string || null === $string || '' === $string) {
return 0;
}
$str = mb_convert_encoding($string, "UCS-4BE", "UTF-8");
$substr = mb_substr($str, 0, 1, "UCS-4BE");
$val = unpack("N", $substr);
return $val[1];
}
/**
* Get the multibyte character of an ASCII
* (from http://fr2.php.net/manual/en/function.chr.php#69082)
*
* @param int $ascii the ASCII code for which character is required
*
* @return string the multibyte character
*/
public function chr($ascii)
{
return mb_convert_encoding(
pack("N", $ascii),
mb_internal_encoding(),
'UCS-4BE'
);
}
/**
* Perform a regular expression match
*
* Take care: might not work with lookbehind expressions.
*
* @param string $pattern Pattern to search for
* @param string $subject Input string
* @param int $offset Start from search
*
* @return int|false 1 if matched, 0 if doesn't, false on failure
*/
public function pregStrpos($pattern, $subject, $offset = 0)
{
$matches = array();
$bFind = preg_match(
$pattern, $this->substr($subject, $offset), $matches, PREG_OFFSET_CAPTURE
);
if (1 !== $bFind) {
return false;
}
return $matches[1][1] + $offset;
}
}
?>
|