Completed
Push — master ( d9402f...6abb29 )
by Davey
05:47
created

MySQL::mysqlFieldInfo()   B

Complexity

Conditions 6
Paths 5

Size

Total Lines 34
Code Lines 19

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 13
CRAP Score 6.0131

Importance

Changes 0
Metric Value
cc 6
eloc 19
nc 5
nop 3
dl 0
loc 34
ccs 13
cts 14
cp 0.9286
crap 6.0131
rs 8.439
c 0
b 0
f 0
1
<?php
2
/**
3
 * php7-mysql-shim
4
 *
5
 * @author Davey Shafik <[email protected]>
6
 * @copyright Copyright (c) 2017 Davey Shafik
7
 * @license MIT License
8
 * @link https://github.com/dshafik/php7-mysql-shim
9
 */
10
11
/**
12
 * A drop-in replacement for ext/mysql in PHP 7+ using ext/mysqli instead
13
 *
14
 * This library is meant to be a _stop-gap_. It will be slower than using
15
 * the native functions directly.
16
 *
17
 * You should switch to ext/pdo_mysql or ext/mysqli, and migrate to prepared
18
 * queries (@see http://php.net/manual/en/pdo.prepared-statements.php) to
19
 * ensure you are securely interacting with your database.
20
 */
21
namespace {
22
23
    if (!extension_loaded('mysql')) {
24
        define ('MYSQL_ASSOC', 1);
25
        define ('MYSQL_NUM', 2);
26
        define ('MYSQL_BOTH', 3);
27
        define ('MYSQL_CLIENT_COMPRESS', 32);
28
        define ('MYSQL_CLIENT_SSL', 2048);
29
        define ('MYSQL_CLIENT_INTERACTIVE', 1024);
30
        define ('MYSQL_CLIENT_IGNORE_SPACE', 256);
31
32
        function mysql_connect(
33
            $hostname = null,
34
            $username = null,
35
            $password = null,
36
            $new = false,
37
            $flags = 0
38
        ) {
39 62
            if ($new !== false) {
40 1
                trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
41
            }
42 61
            if (null === $hostname) {
43 1
                $hostname = ini_get('mysqli.default_host') ?: null;
44
            }
45 61
            if (null === $username) {
46 1
                $username = ini_get('mysqli.default_user') ?: null;
47
            }
48 61
            if (null === $password) {
49 58
                $password = ini_get('mysqli.default_pw') ?: null;
50
            }
51
52 61
            $hash = sha1($hostname . $username . $flags);
53
            /* persistent connections start with p: */
54 61
            if ($hostname{1} !== ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
55 10
                \Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
56 10
                \Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
57 10
                return \Dshafik\MySQL::$connections[$hash]['conn'];
58
            }
59
60
            /* No flags, means we can use mysqli_connect() */
61 52
            if ($flags === 0) {
62 50
                $conn = mysqli_connect($hostname, $username, $password);
63 49
                if (!$conn instanceof mysqli) {
64 1
                    return false;
65
                }
66 48
                \Dshafik\MySQL::$last_connection = $conn;
67 48
                $conn->hash = $hash;
68 48
                \Dshafik\MySQL::$connections[$hash] = array('refcount' => 1, 'conn' => $conn);
69
70 48
                return $conn;
71
            }
72
73
            /* Flags means we need to use mysqli_real_connect() instead, and handle exceptions */
74
            try {
75 2
                \Dshafik\MySQL::$last_connection = $conn = mysqli_init();
76
77 2
                mysqli_real_connect(
78
                    $conn,
79
                    $hostname,
80
                    $username,
81
                    $password,
82 2
                    '',
83 2
                    null,
84 2
                    '',
85
                    $flags
86
                );
87
88
                // @codeCoverageIgnoreStart
89
                // PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
90
                if ($conn === false) {
91
                    return false;
92
                }
93
                // @codeCoverageIgnoreEnd
94
95 1
                $conn->hash = $hash;
96 1
                \Dshafik\MySQL::$connections[$hash] = array('refcount' => 1, 'conn' => $conn);
97
98 1
                return $conn;
99 1
            } catch (\Throwable $e) {
100 1
                trigger_error($e->getMessage(), E_USER_WARNING);
101
                // @codeCoverageIgnoreStart
102
                // PHPUnit turns the warning into an exception, so this never runs
103
                return false;
104
                // @codeCoverageIgnoreEnd
105
            }
106
        }
107
108
        function mysql_pconnect(
109
            $hostname = null,
110
            $username = null,
111
            $password = null,
112
            $flags = 0
113
        ) {
114 1
            $hostname = 'p:' . $hostname;
115 1
            return mysql_connect($hostname, $username, $password, false, $flags);
116
        }
117
118
        function mysql_close(\mysqli $link = null)
119
        {
120 85
            $isDefault = ($link === null);
121
122 85
            $link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
123 85
            if ($link === null) {
124
                // @codeCoverageIgnoreStart
125
                // PHPUnit Warning -> Exception
126
                return false;
127
                // @codeCoverageIgnoreEnd
128
            }
129
130 85
            if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
131 58
                \Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
132
            }
133
134 85
            $return = true;
135 85
            if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] === 0) {
136 49
                $return = mysqli_close($link);
137 49
                unset(\Dshafik\MySQL::$connections[$link->hash]);
138
            }
139
140 85
            if ($isDefault) {
141 85
                Dshafik\MySQL::$last_connection = null;
142
            }
143
144 85
            return $return;
145
        }
146
147
        function mysql_select_db($databaseName, \mysqli $link = null)
148
        {
149 51
            $link = \Dshafik\MySQL::getConnection($link);
150
151 51
            return mysqli_query(
152
                $link,
153 51
                'USE `' . mysqli_real_escape_string($link, $databaseName) . '`'
154 51
            ) !== false;
155
        }
156
157
        function mysql_query($query, \mysqli $link = null)
158
        {
159 54
            return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
160
        }
161
162
        function mysql_unbuffered_query($query, \mysqli $link = null)
163
        {
164 4
            $link = \Dshafik\MySQL::getConnection($link);
165 4
            if (mysqli_real_query($link, $query)) {
166 3
                return mysqli_use_result($link);
167
            }
168
169 1
            return false;
170
        }
171
172
        function mysql_db_query($databaseName, $query, \mysqli $link = null)
173
        {
174 2
            if (mysql_select_db($databaseName, $link)) {
175 1
                return mysql_query($query, $link);
176
            }
177 1
            return false;
178
        }
179
180
        function mysql_list_dbs(\mysqli $link = null)
181
        {
182 2
            return mysql_query('SHOW DATABASES', $link);
183
        }
184
185
        function mysql_list_tables($databaseName, \mysqli $link = null)
186
        {
187 3
            $link = \Dshafik\MySQL::getConnection($link);
188 3
            $query = sprintf(
189 3
                'SHOW TABLES FROM `%s`',
190
                mysql_real_escape_string($databaseName, $link)
191
            );
192 3
            return mysql_query($query, $link);
193
        }
194
195
        function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
196
        {
197 3
            $link = \Dshafik\MySQL::getConnection($link);
198
199 3
            $query = sprintf(
200 3
                'SHOW COLUMNS FROM `%s`.`%s`',
201
                mysqli_real_escape_string($link, $databaseName),
202
                mysqli_real_escape_string($link, $tableName)
203
            );
204
205 3
            $result = mysql_query($query, $link);
206
207 3
            if ($result instanceof \mysqli_result) {
208 2
                $result->table = $tableName;
209 2
                return $result;
210
            }
211
212 1
            trigger_error('mysql_list_fields(): Unable to save MySQL query result', E_USER_WARNING);
213
            // @codeCoverageIgnoreStart
214
            return false;
215
            // @codeCoverageIgnoreEnd
216
        }
217
218
        function mysql_list_processes(\mysqli $link = null)
219
        {
220
            return mysql_query('SHOW PROCESSLIST', $link);
221
        }
222
223
        function mysql_error(\mysqli $link = null)
224
        {
225 32
            return mysqli_error(\Dshafik\MySQL::getConnection($link));
226
        }
227
228
        function mysql_errno(\mysqli $link = null)
229
        {
230 1
            return mysqli_errno(\Dshafik\MySQL::getConnection($link));
231
        }
232
233
        function mysql_affected_rows(\mysqli $link = null)
234
        {
235 1
            return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
236
        }
237
238
        function mysql_insert_id($link = null) /*|*/
239
        {
240 1
            return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
241
        }
242
243
        function mysql_result($result, $row, $field = 0)
244
        {
245 8
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
246
                // @codeCoverageIgnoreStart
247
                return false;
248
                // @codeCoverageIgnoreEnd
249
            }
250
251 7
            if (!mysqli_data_seek($result, $row)) {
252 1
                trigger_error(
253
                    sprintf(
254 1
                        'mysql_result(): Unable to jump to row %d on MySQL result index %s',
255
                        $row,
256
                        spl_object_hash($result)
257
                    ),
258 1
                    E_USER_WARNING
259
                );
260
                // @codeCoverageIgnoreStart
261
                return false;
262
                // @codeCoverageIgnoreEnd
263
            }
264
265 6
            $found = true;
266 6
            if (strpos($field, '.') !== false) {
267 3
                list($table, $name) =  explode('.', $field);
268 3
                $i = 0;
269 3
                $found = false;
270 3
		        mysqli_field_seek($result, 0);
271 3
                while ($column = mysqli_fetch_field($result)) {
272 3
                    if ($column->table === $table && $column->name === $name) {
273 2
                        $field = $i;
274 2
                        $found = true;
275 2
                        break;
276
                    }
277 3
                    $i++;
278
                }
279
            }
280
281 6
            $row = mysql_fetch_array($result);
282 6
            if ($found && array_key_exists($field, $row)) {
283 4
                return $row[$field];
284
            }
285
286 2
            trigger_error(
287
                sprintf(
288 2
                    '%s(): %s not found in MySQL result index %s',
289 2
                    __FUNCTION__,
290
                    $field,
291
                    spl_object_hash($result)
292
                ),
293 2
                E_USER_WARNING
294
            );
295
            // @codeCoverageIgnoreStart
296
            return false;
297
            // @codeCoverageIgnoreEnd
298
        }
299
300
        function mysql_num_rows($result)
301
        {
302 14
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
303
                // @codeCoverageIgnoreStart
304
                return false;
305
                // @codeCoverageIgnoreEnd
306
            }
307
308 13
            $previous = error_reporting(0);
309 13
            $rows = mysqli_num_rows($result);
310 13
            error_reporting($previous);
311
312 13
            return $rows;
313
        }
314
315
        function mysql_num_fields($result)
316
        {
317 3
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
318
                // @codeCoverageIgnoreStart
319
                return false;
320
                // @codeCoverageIgnoreEnd
321
            }
322 1
            return mysqli_num_fields($result);
323
        }
324
325
        function mysql_fetch_row($result)
326
        {
327 6
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
328
                // @codeCoverageIgnoreStart
329
                return false;
330
                // @codeCoverageIgnoreEnd
331
            }
332 5
            return mysqli_fetch_row($result) ?: false;
333
        }
334
335
        function mysql_fetch_array($result, $resultType = MYSQL_BOTH)
336
        {
337 11
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
338
                // @codeCoverageIgnoreStart
339
                return false;
340
                // @codeCoverageIgnoreEnd
341
            }
342 10
            return mysqli_fetch_array($result, $resultType) ?: false;
343
        }
344
345
        function mysql_fetch_assoc($result) /* : array|null */
346
        {
347 9
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
348
                // @codeCoverageIgnoreStart
349
                return false;
350
                // @codeCoverageIgnoreEnd
351
            }
352
353 8
            return mysqli_fetch_assoc($result) ?: false;
354
        }
355
356
        function mysql_fetch_object($result, $class = null, array $params = array()) /* : object|null */
357
        {
358 3
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
359
                // @codeCoverageIgnoreStart
360
                return false;
361
                // @codeCoverageIgnoreEnd
362
            }
363
364 2
            if ($class === null) {
365 2
                $object = mysqli_fetch_object($result);
366
            } else {
367
                $object = mysqli_fetch_object($result, $class, $params);
368
            }
369
370 2
            return $object ?: false;
371
        }
372
373
        function mysql_data_seek($result, $offset)
374
        {
375 1
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
376
                // @codeCoverageIgnoreStart
377
                return false;
378
                // @codeCoverageIgnoreEnd
379
            }
380
            return mysqli_data_seek($result, $offset);
381
        }
382
383
        function mysql_fetch_lengths($result) /* : array|*/
384
        {
385 1
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
386
                // @codeCoverageIgnoreStart
387
                return false;
388
                // @codeCoverageIgnoreEnd
389
            }
390
            return mysqli_fetch_lengths($result);
391
        }
392
393
        function mysql_fetch_field($result) /* : object|*/
394
        {
395 1
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
396
                // @codeCoverageIgnoreStart
397
                return false;
398
                // @codeCoverageIgnoreEnd
399
            }
400
            return mysqli_fetch_field($result);
401
        }
402
403
        function mysql_field_seek($result, $field)
404
        {
405 1
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
406
                // @codeCoverageIgnoreStart
407
                return false;
408
                // @codeCoverageIgnoreEnd
409
            }
410
            return mysqli_field_seek($result, $field);
411
        }
412
413
        function mysql_free_result($result)
414
        {
415 2
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
416
                // @codeCoverageIgnoreStart
417
                return false;
418
                // @codeCoverageIgnoreEnd
419
            }
420 1
            return mysqli_free_result($result);
421
        }
422
423 View Code Duplication
        function mysql_field_name($result, $field)
424
        {
425 4
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
426
                // @codeCoverageIgnoreStart
427
                return false;
428
                // @codeCoverageIgnoreEnd
429
            }
430 3
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
431
        }
432
433
        function mysql_field_table($result, $field)
434
        {
435 4
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
436
                // @codeCoverageIgnoreStart
437
                return false;
438
                // @codeCoverageIgnoreEnd
439
            }
440 3
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
441
        }
442
443
        function mysql_field_len($result, $field)
444
        {
445 4
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
446
                // @codeCoverageIgnoreStart
447
                return false;
448
                // @codeCoverageIgnoreEnd
449
            }
450 3
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'length');
451
        }
452
453 View Code Duplication
        function mysql_field_type($result, $field)
454
        {
455 4
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
456
                // @codeCoverageIgnoreStart
457
                return false;
458
                // @codeCoverageIgnoreEnd
459
            }
460 3
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
461
        }
462
463
        function mysql_field_flags($result, $field)
464
        {
465 4
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
466
                // @codeCoverageIgnoreStart
467
                return false;
468
                // @codeCoverageIgnoreEnd
469
            }
470 3
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
471
        }
472
473
        function mysql_escape_string($unescapedString)
474
        {
475 2
            if (\Dshafik\MySQL::$last_connection === null) {
476 2
                trigger_error(
477
                    sprintf(
478 2
                        '%s() is insecure; use mysql_real_escape_string() instead!',
479 2
                        __FUNCTION__
480
                    ),
481 2
                    E_USER_NOTICE
482
                );
483
484 1
                return \Dshafik\MySQL::escapeString($unescapedString);
485
            }
486
            return mysql_real_escape_string($unescapedString, null);
487
        }
488
489
        function mysql_real_escape_string($unescapedString, \mysqli $link = null)
490
        {
491 3
            return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
492
        }
493
494
        function mysql_stat(\mysqli $link = null)
495
        {
496
            return mysqli_stat(\Dshafik\MySQL::getConnection($link));
497
        }
498
499
        function mysql_thread_id(\mysqli $link = null)
500
        {
501
            return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
502
        }
503
504
        function mysql_client_encoding(\mysqli $link = null)
505
        {
506
            return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
507
        }
508
509
        function mysql_ping(\mysqli $link = null)
510
        {
511
            return mysqli_ping($link);
512
        }
513
514
        function mysql_get_client_info(\mysqli $link = null)
515
        {
516
            return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
517
        }
518
519
        function mysql_get_host_info(\mysqli $link = null)
520
        {
521
            return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
522
        }
523
524
        function mysql_get_proto_info(\mysqli $link = null)
525
        {
526
            return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
527
        }
528
529
        function mysql_get_server_info(\mysqli $link = null)
530
        {
531
            return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
532
        }
533
534
        function mysql_info(\mysqli $link = null)
535
        {
536
            return mysqli_info(\Dshafik\MySQL::getConnection($link));
537
        }
538
539
        function mysql_set_charset($charset, \mysqli $link = null)
540
        {
541
            return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
542
        }
543
544
        function mysql_db_name($result, $row, $field = 0)
545
        {
546 2
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
547
                // @codeCoverageIgnoreStart
548
                return false;
549
                // @codeCoverageIgnoreEnd
550
            }
551
552
            // Alias as per https://github.com/php/php-src/blob/PHP-5.6/ext/mysql/php_mysql.c#L319
553 1
            return mysql_result($result, $row, $field);
554
        }
555
556
        function mysql_tablename($result, $row)
557
        {
558 1
            if (!\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
559
                // @codeCoverageIgnoreStart
560
                return false;
561
                // @codeCoverageIgnoreEnd
562
            }
563
564
            // Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
565
            return mysql_result($result, $row, 'Table');
566
        }
567
568
        /* Aliases */
569
570
        function mysql_fieldname($result, $field)
571
        {
572
            return mysql_field_name($result, $field);
573
        }
574
575
        function mysql_fieldtable($result, $field)
576
        {
577
            return mysql_field_table($result, $field);
578
        }
579
580
        function mysql_fieldlen($result, $field)
581
        {
582
            return mysql_field_len($result, $field);
583
        }
584
585
        function mysql_fieldtype($result, $field)
586
        {
587
            return mysql_field_type($result, $field);
588
        }
589
590
        function mysql_fieldflags($result, $field)
591
        {
592
            return mysql_field_flags($result, $field);
593
        }
594
595
        function mysql_selectdb($databaseName, $link = null)
596
        {
597
            return mysql_select_db($databaseName, $link);
598
        }
599
600
        function mysql_freeresult($result)
601
        {
602
            return mysql_free_result($result);
603
        }
604
605
        function mysql_numfields($result)
606
        {
607
            return mysql_num_fields($result);
608
        }
609
610
        function mysql_numrows($result)
611
        {
612
            return mysql_num_rows($result);
613
        }
614
615
        function mysql_listdbs($link)
616
        {
617
            return mysql_list_dbs($link);
618
        }
619
620
        function mysql_listtables($databaseName, $link = null)
621
        {
622
            return mysql_list_tables($databaseName, $link);
623
        }
624
625
        function mysql_listfields($databaseName, $tableName, $link = null)
626
        {
627
            return mysql_list_fields($databaseName, $tableName, $link);
628
        }
629
630
        function mysql_dbname($result, $row, $field = 0)
631
        {
632
            return mysql_db_name($result, $row, $field);
633
        }
634
635
        function mysql_table_name($result, $row)
636
        {
637
            return mysql_tablename($result, $row);
638
        }
639
    }
640
}
641
642
namespace Dshafik {
643
644
    class MySQL
645
    {
646
        public static $last_connection = null;
647
        public static $connections = array();
648
649 85
        public static function getConnection($link = null, $func = null)
650
        {
651 85
            if ($link !== null) {
652 9
                return $link;
653
            }
654
655 85
            if (static::$last_connection === null) {
656 27
                $err = 'A link to the server could not be established';
657 27
                if ($func !== null) {
658 27
                    $err = $func . '(): no MySQL-Link resource supplied';
659
                }
660 27
                trigger_error($err, E_USER_WARNING);
661 27
                return false;
662
            }
663
664 59
            return static::$last_connection;
665
        }
666
667 7
        public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
668
        {
669
            try {
670 7
                $field = mysqli_fetch_field_direct($result, $field);
671 5
            } catch (\Exception $e) {
672 5
                trigger_error(
673
                    sprintf(
674 5
                        'mysql_field_%s(): Field %d is invalid for MySQL result index %s',
675 5
                        ($what !== 'length') ? $what : 'len',
676
                        $field,
677
                        spl_object_hash($result)
678
                    ),
679 5
                    E_USER_WARNING
680
                );
681
                // @codeCoverageIgnoreStart
682
                // PHPUnit turns the warning into an exception, so this never runs
683
                return false;
684
                // @codeCoverageIgnoreEnd
685
            }
686
687 2
            if ($what === 'type') {
688 2
                return static::getFieldType($field->type);
689
            }
690
691 2
            if ($what === 'flags') {
692 2
                return static::getFieldFlags($field->flags);
693
            }
694
695 2
            if (isset($field->{$what})) {
696 2
                return $field->{$what};
697
            }
698
699
            return false;
700
        }
701
702 56
        public static function checkValidResult($result, $function)
703
        {
704 56
            if (!($result instanceof \mysqli_result)) {
705 20
                if ($function !== 'mysql_fetch_object') {
706 19
                    trigger_error(
707 19
                        $function . '() expects parameter 1 to be resource, ' . strtolower(gettype($result)) . ' given',
708 19
                        E_USER_WARNING
709
                    );
710
                }
711
712 1
                if ($function === 'mysql_fetch_object') {
713 1
                    trigger_error(
714 1
                        $function . '(): supplied argument is not a valid MySQL result resource',
715 1
                        E_USER_WARNING
716
                    );
717
                }
718
                return false;
719
            }
720
721 36
            return true;
722
        }
723
724 1
        public static function escapeString($unescapedString)
725
        {
726 1
            $escapedString = '';
727 1
            for ($i = 0, $max = strlen($unescapedString); $i < $max; $i++) {
728 1
                $escapedString .= self::escapeChar($unescapedString{$i});
729
            }
730
731 1
            return $escapedString;
732
        }
733
734 2
        protected static function getFieldFlags($what)
735
        {
736
            // Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
737
            $flags = array(
738 2
                MYSQLI_NOT_NULL_FLAG => 'not_null',
739 2
                MYSQLI_PRI_KEY_FLAG => 'primary_key',
740 2
                MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
741 2
                MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
742 2
                MYSQLI_BLOB_FLAG => 'blob',
743 2
                MYSQLI_UNSIGNED_FLAG => 'unsigned',
744 2
                MYSQLI_ZEROFILL_FLAG => 'zerofill',
745 2
                MYSQLI_BINARY_FLAG => 'binary',
746 2
                MYSQLI_ENUM_FLAG => 'enum',
747 2
                MYSQLI_SET_FLAG => 'set',
748 2
                MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
749 2
                MYSQLI_TIMESTAMP_FLAG => 'timestamp',
750
            );
751
752 2
            $fieldFlags = array();
753 2
            foreach ($flags as $flag => $value) {
754 2
                if ($what & $flag) {
755 2
                    $fieldFlags[] = $value;
756
                }
757
            }
758
759 2
            return implode(' ', $fieldFlags);
760
        }
761
762 2
        protected static function getFieldType($what)
763
        {
764
            $types = array(
765 2
                MYSQLI_TYPE_STRING => 'string',
766 2
                MYSQLI_TYPE_VAR_STRING => 'string',
767 2
                MYSQLI_TYPE_ENUM => 'string',
768 2
                MYSQLI_TYPE_SET => 'string',
769
770 2
                MYSQLI_TYPE_LONG => 'int',
771 2
                MYSQLI_TYPE_TINY => 'int',
772 2
                MYSQLI_TYPE_SHORT => 'int',
773 2
                MYSQLI_TYPE_INT24 => 'int',
774 2
                MYSQLI_TYPE_CHAR => 'int',
775 2
                MYSQLI_TYPE_LONGLONG => 'int',
776
777 2
                MYSQLI_TYPE_DECIMAL => 'real',
778 2
                MYSQLI_TYPE_FLOAT => 'real',
779 2
                MYSQLI_TYPE_DOUBLE => 'real',
780 2
                MYSQLI_TYPE_NEWDECIMAL => 'real',
781
782 2
                MYSQLI_TYPE_TINY_BLOB => 'blob',
783 2
                MYSQLI_TYPE_MEDIUM_BLOB => 'blob',
784 2
                MYSQLI_TYPE_LONG_BLOB => 'blob',
785 2
                MYSQLI_TYPE_BLOB => 'blob',
786
787 2
                MYSQLI_TYPE_NEWDATE => 'date',
788 2
                MYSQLI_TYPE_DATE => 'date',
789 2
                MYSQLI_TYPE_TIME => 'time',
790 2
                MYSQLI_TYPE_YEAR => 'year',
791 2
                MYSQLI_TYPE_DATETIME => 'datetime',
792 2
                MYSQLI_TYPE_TIMESTAMP => 'timestamp',
793
794 2
                MYSQLI_TYPE_NULL => 'null',
795
796 2
                MYSQLI_TYPE_GEOMETRY => 'geometry',
797
            );
798
799 2
            return isset($types[$what]) ? $types[$what] : 'unknown';
800
        }
801
802 1
        protected static function escapeChar($char)
803
        {
804
            switch ($char) {
805 1
                case "\0":
806 1
                    $esc = "\\0";
807 1
                    break;
808 1
                case "\n":
809 1
                    $esc = "\\n";
810 1
                    break;
811 1
                case "\r":
812 1
                    $esc = "\\r";
813 1
                    break;
814 1
                case '\\':
815 1
                case '\'':
816 1
                case '"':
817 1
                    $esc = "\\{$char}";
818 1
                    break;
819 1
                case "\032":
820 1
                    $esc = "\\Z";
821 1
                    break;
822
                default:
823 1
                    $esc = $char;
824 1
                    break;
825
            }
826
827 1
            return $esc;
828
        }
829
    }
830
}
831