Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/db_update.php
blob: 2964bf310f180ed8e7d84150167d1e02fc67fe33 (plain)
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
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
<?php

/**
 * Copyright (C) 2008-2012 FluxBB
 * based on code by Rickard Andersson copyright (C) 2002-2008 PunBB
 * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
 */

// The FluxBB version this script updates to
define('UPDATE_TO', '1.5.11');

define('UPDATE_TO_DB_REVISION', 21);
define('UPDATE_TO_SI_REVISION', 2);
define('UPDATE_TO_PARSER_REVISION', 2);

define('MIN_PHP_VERSION', '4.4.0');
define('MIN_MYSQL_VERSION', '4.1.2');
define('MIN_PGSQL_VERSION', '7.0.0');
define('PUN_SEARCH_MIN_WORD', 3);
define('PUN_SEARCH_MAX_WORD', 20);

// The MySQL connection character set that was used for FluxBB 1.2 - in 99% of cases this should be detected automatically,
// but can be overridden using the below constant if required.
//define('FORUM_DEFAULT_CHARSET', 'latin1');


// The number of items to process per page view (lower this if the update script times out during UTF-8 conversion)
define('PER_PAGE', 300);

// Don't set to UTF-8 until after we've found out what the default character set is
define('FORUM_NO_SET_NAMES', 1);

// Make sure we are running at least MIN_PHP_VERSION
if (!function_exists('version_compare') || version_compare(PHP_VERSION, MIN_PHP_VERSION, '<'))
	exit('You are running PHP version '.PHP_VERSION.'. FluxBB '.UPDATE_TO.' requires at least PHP '.MIN_PHP_VERSION.' to run properly. You must upgrade your PHP installation before you can continue.');

define('PUN_ROOT', dirname(__FILE__).'/');

// Attempt to load the configuration file config.php
if (file_exists(PUN_ROOT.'config.php'))
	include PUN_ROOT.'config.php';

// If we have the 1.3-legacy constant defined, define the proper 1.4 constant so we don't get an incorrect "need to install" message
if (defined('FORUM'))
	define('PUN', FORUM);

// If PUN isn't defined, config.php is missing or corrupt
if (!defined('PUN'))
{
	header('Location: install.php');
	exit;
}

// Enable debug mode
if (!defined('PUN_DEBUG'))
	define('PUN_DEBUG', 1);

// Load the functions script
require PUN_ROOT.'include/functions.php';

// Load UTF-8 functions
require PUN_ROOT.'include/utf8/utf8.php';

// Strip out "bad" UTF-8 characters
forum_remove_bad_characters();

// Reverse the effect of register_globals
forum_unregister_globals();

// Turn on full PHP error reporting
error_reporting(E_ALL);

// Force POSIX locale (to prevent functions such as strtolower() from messing up UTF-8 strings)
setlocale(LC_CTYPE, 'C');

// Turn off magic_quotes_runtime
if (get_magic_quotes_runtime())
	set_magic_quotes_runtime(0);

// Strip slashes from GET/POST/COOKIE (if magic_quotes_gpc is enabled)
if (get_magic_quotes_gpc())
{
	function stripslashes_array($array)
	{
		return is_array($array) ? array_map('stripslashes_array', $array) : stripslashes($array);
	}

	$_GET = stripslashes_array($_GET);
	$_POST = stripslashes_array($_POST);
	$_COOKIE = stripslashes_array($_COOKIE);
	$_REQUEST = stripslashes_array($_REQUEST);
}

// If a cookie name is not specified in config.php, we use the default (forum_cookie)
if (empty($cookie_name))
	$cookie_name = 'pun_cookie';

// If the cache directory is not specified, we use the default setting
if (!defined('FORUM_CACHE_DIR'))
	define('FORUM_CACHE_DIR', PUN_ROOT.'cache/');

// Turn off PHP time limit
@set_time_limit(0);

// Define a few commonly used constants
define('PUN_UNVERIFIED', 0);
define('PUN_ADMIN', 1);
define('PUN_MOD', 2);
define('PUN_GUEST', 3);
define('PUN_MEMBER', 4);

// Load DB abstraction layer and try to connect
require PUN_ROOT.'include/dblayer/common_db.php';

$db->start_transaction();

// Check what the default character set is - since 1.2 didn't specify any we will use whatever the default was (usually latin1)
$old_connection_charset = defined('FORUM_DEFAULT_CHARSET') ? FORUM_DEFAULT_CHARSET : $db->get_names();

// Set the connection to UTF-8 now
$db->set_names('utf8');

// Get the forum config
$result = $db->query('SELECT * FROM '.$db->prefix.'config') or error('Unable to fetch config.', __FILE__, __LINE__, $db->error());
while ($cur_config_item = $db->fetch_row($result))
	$pun_config[$cur_config_item[0]] = $cur_config_item[1];

// Load language file
$default_lang = $pun_config['o_default_lang'];

if (!file_exists(PUN_ROOT.'lang/'.$default_lang.'/update.php'))
	$default_lang = 'English';

require PUN_ROOT.'lang/'.$default_lang.'/common.php';
require PUN_ROOT.'lang/'.$default_lang.'/update.php';

// Check current version
$cur_version = $pun_config['o_cur_version'];

if (version_compare($cur_version, '1.2', '<'))
	error(sprintf($lang_update['Version mismatch error'], $db_name));

// Do some DB type specific checks
$mysql = false;
switch ($db_type)
{
	case 'mysql':
	case 'mysqli':
	case 'mysql_innodb':
	case 'mysqli_innodb':
		$mysql_info = $db->get_version();
		if (version_compare($mysql_info['version'], MIN_MYSQL_VERSION, '<'))
			error(sprintf($lang_update['You are running error'], 'MySQL', $mysql_info['version'], UPDATE_TO, MIN_MYSQL_VERSION));

		$mysql = true;
		break;

	case 'pgsql':
		$pgsql_info = $db->get_version();
		if (version_compare($pgsql_info['version'], MIN_PGSQL_VERSION, '<'))
			error(sprintf($lang_update['You are running error'], 'PostgreSQL', $pgsql_info['version'], UPDATE_TO, MIN_PGSQL_VERSION));

		break;
}

// Check the database, search index and parser revision and the current version
if (isset($pun_config['o_database_revision']) && $pun_config['o_database_revision'] >= UPDATE_TO_DB_REVISION &&
		isset($pun_config['o_searchindex_revision']) && $pun_config['o_searchindex_revision'] >= UPDATE_TO_SI_REVISION &&
		isset($pun_config['o_parser_revision']) && $pun_config['o_parser_revision'] >= UPDATE_TO_PARSER_REVISION &&
		version_compare($pun_config['o_cur_version'], UPDATE_TO, '>='))
	error($lang_update['No update error']);

$default_style = $pun_config['o_default_style'];
if (!file_exists(PUN_ROOT.'style/'.$default_style.'.css'))
	$default_style = 'Air';

// Start a session, used to queue up errors if duplicate users occur when converting from FluxBB v1.2.
session_start();

//
// Determines whether $str is UTF-8 encoded or not
//
function seems_utf8($str)
{
	$str_len = strlen($str);
	for ($i = 0; $i < $str_len; ++$i)
	{
		if (ord($str[$i]) < 0x80) continue; # 0bbbbbbb
		else if ((ord($str[$i]) & 0xE0) == 0xC0) $n=1; # 110bbbbb
		else if ((ord($str[$i]) & 0xF0) == 0xE0) $n=2; # 1110bbbb
		else if ((ord($str[$i]) & 0xF8) == 0xF0) $n=3; # 11110bbb
		else if ((ord($str[$i]) & 0xFC) == 0xF8) $n=4; # 111110bb
		else if ((ord($str[$i]) & 0xFE) == 0xFC) $n=5; # 1111110b
		else return false; # Does not match any model

		for ($j = 0; $j < $n; ++$j) # n bytes matching 10bbbbbb follow ?
		{
			if ((++$i == strlen($str)) || ((ord($str[$i]) & 0xC0) != 0x80))
				return false;
		}
	}

	return true;
}


//
// Translates the number from a HTML numeric entity into an UTF-8 character
//
function dcr2utf8($src)
{
	$dest = '';
	if ($src < 0)
		return false;
	else if ($src <= 0x007f)
		$dest .= chr($src);
	else if ($src <= 0x07ff)
	{
		$dest .= chr(0xc0 | ($src >> 6));
		$dest .= chr(0x80 | ($src & 0x003f));
	}
	else if ($src == 0xFEFF)
	{
		// nop -- zap the BOM
	}
	else if ($src >= 0xD800 && $src <= 0xDFFF)
	{
		// found a surrogate
		return false;
	}
	else if ($src <= 0xffff)
	{
		$dest .= chr(0xe0 | ($src >> 12));
		$dest .= chr(0x80 | (($src >> 6) & 0x003f));
		$dest .= chr(0x80 | ($src & 0x003f));
	}
	else if ($src <= 0x10ffff)
	{
		$dest .= chr(0xf0 | ($src >> 18));
		$dest .= chr(0x80 | (($src >> 12) & 0x3f));
		$dest .= chr(0x80 | (($src >> 6) & 0x3f));
		$dest .= chr(0x80 | ($src & 0x3f));
	}
	else
	{
		// out of range
		return false;
	}

	return $dest;
}


//
// Attempts to convert $str from $old_charset to UTF-8. Also converts HTML entities (including numeric entities) to UTF-8 characters
//
function convert_to_utf8(&$str, $old_charset)
{
	if (is_null($str) || $str == '')
		return false;

	$save = $str;

	// Replace literal entities (for non-UTF-8 compliant html_entity_encode)
	if (version_compare(PHP_VERSION, '5.0.0', '<') && $old_charset == 'ISO-8859-1' || $old_charset == 'ISO-8859-15')
		$str = html_entity_decode($str, ENT_QUOTES, $old_charset);

	if ($old_charset != 'UTF-8' && !seems_utf8($str))
	{
		if (function_exists('iconv'))
			$str = iconv(!empty($old_charset) ? $old_charset : 'ISO-8859-1', 'UTF-8', $str);
		else if (function_exists('mb_convert_encoding'))
			$str = mb_convert_encoding($str, 'UTF-8', !empty($old_charset) ? $old_charset : 'ISO-8859-1');
		else if ($old_charset == 'ISO-8859-1')
			$str = utf8_encode($str);
	}

	// Replace literal entities (for UTF-8 compliant html_entity_encode)
	if (version_compare(PHP_VERSION, '5.0.0', '>='))
		$str = html_entity_decode($str, ENT_QUOTES, 'UTF-8');

	// Replace numeric entities
	$str = preg_replace_callback('%&#([0-9]+);%', 'utf8_callback_1', $str);
	$str = preg_replace_callback('%&#x([a-f0-9]+);%i', 'utf8_callback_2', $str);

	// Remove "bad" characters
	$str = remove_bad_characters($str);

	return ($save != $str);
}


function utf8_callback_1($matches)
{
	return dcr2utf8($matches[1]);
}


function utf8_callback_2($matches)
{
	return dcr2utf8(hexdec($matches[1]));
}


//
// Alter a table to be utf8. MySQL only
// Function based on update_convert_table_utf8() from the Drupal project (http://drupal.org/)
//
function alter_table_utf8($table)
{
	global $mysql, $db;
	static $types;

	if (!$mysql)
		return;

	if (!isset($types))
	{
		$types = array(
			'char'			=> 'binary',
			'varchar'		=> 'varbinary',
			'tinytext'		=> 'tinyblob',
			'mediumtext'	=> 'mediumblob',
			'text'			=> 'blob',
			'longtext'		=> 'longblob'
		);
	}

	// Set table default charset to utf8
	$db->query('ALTER TABLE '.$table.' CHARACTER SET utf8') or error('Unable to set table character set', __FILE__, __LINE__, $db->error());

	// Find out which columns need converting and build SQL statements
	$result = $db->query('SHOW FULL COLUMNS FROM '.$table) or error('Unable to fetch column information', __FILE__, __LINE__, $db->error());
	while ($cur_column = $db->fetch_assoc($result))
	{
		if (is_null($cur_column['Collation']))
			continue;

		list($type) = explode('(', $cur_column['Type']);
		if (isset($types[$type]) && strpos($cur_column['Collation'], 'utf8') === false)
		{
			$allow_null = ($cur_column['Null'] == 'YES');
			$collate = (substr($cur_column['Collation'], -3) == 'bin') ? 'utf8_bin' : 'utf8_general_ci';

			$db->alter_field($table, $cur_column['Field'], preg_replace('%'.$type.'%i', $types[$type], $cur_column['Type']), $allow_null, $cur_column['Default'], null, true) or error('Unable to alter field to binary', __FILE__, __LINE__, $db->error());
			$db->alter_field($table, $cur_column['Field'], $cur_column['Type'].' CHARACTER SET utf8 COLLATE '.$collate, $allow_null, $cur_column['Default'], null, true) or error('Unable to alter field to utf8', __FILE__, __LINE__, $db->error());
		}
	}
}

//
// Safely converts text type columns into utf8
// If finished returns true, otherwise returns $end_at
//
function convert_table_utf8($table, $callback, $old_charset, $key = null, $start_at = null, $error_callback = null)
{
	global $mysql, $db, $old_connection_charset;

	$finished = true;
	$end_at = 0;
	if ($mysql)
	{
		// Only set up the tables if we are doing this in 1 go, or it's the first go
		if (is_null($start_at) || $start_at == 0)
		{
			// Drop any temp table that exists, in-case it's left over from a failed update
			$db->drop_table($table.'_utf8', true) or error('Unable to drop left over temp table', __FILE__, __LINE__, $db->error());

			// Copy the table
			$db->query('CREATE TABLE '.$table.'_utf8 LIKE '.$table) or error('Unable to create new table', __FILE__, __LINE__, $db->error());

			// Set table default charset to utf8
			alter_table_utf8($table.'_utf8');
		}

		// Change to the old character set so MySQL doesn't attempt to perform conversion on the data from the old table
		$db->set_names($old_connection_charset);

		// Move & Convert everything
		$result = $db->query('SELECT * FROM '.$table.(is_null($start_at) ? '' : ' WHERE '.$key.'>'.$start_at).' ORDER BY '.$key.' ASC'.(is_null($start_at) ? '' : ' LIMIT '.PER_PAGE), false) or error('Unable to select from old table', __FILE__, __LINE__, $db->error());

		// Change back to utf8 mode so we can insert it into the new table
		$db->set_names('utf8');

		while ($cur_item = $db->fetch_assoc($result))
		{
			$cur_item = call_user_func($callback, $cur_item, $old_charset);

			$temp = array();
			foreach ($cur_item as $idx => $value)
				$temp[$idx] = is_null($value) ? 'NULL' : '\''.$db->escape($value).'\'';

			$db->query('INSERT INTO '.$table.'_utf8('.implode(',', array_keys($temp)).') VALUES ('.implode(',', array_values($temp)).')') or (is_null($error_callback) ? error('Unable to insert data to new table', __FILE__, __LINE__, $db->error()) : call_user_func($error_callback, $cur_item));

			$end_at = $cur_item[$key];
		}

		// If we aren't doing this all in 1 go and $end_at has a value (i.e. we have processed at least 1 row), figure out if we have more to do or not
		if (!is_null($start_at) && $end_at > 0)
		{
			$result = $db->query('SELECT 1 FROM '.$table.' WHERE '.$key.'>'.$end_at.' ORDER BY '.$key.' ASC LIMIT 1') or error('Unable to check for next row', __FILE__, __LINE__, $db->error());
			$finished = $db->num_rows($result) == 0;
		}

		// Only swap the tables if we are doing this in 1 go, or it's the last go
		if ($finished)
		{
			// Delete old table
			$db->drop_table($table, true) or error('Unable to drop old table', __FILE__, __LINE__, $db->error());

			// Rename table
			$db->query('ALTER TABLE '.$table.'_utf8 RENAME '.$table) or error('Unable to rename new table', __FILE__, __LINE__, $db->error());

			return true;
		}

		return $end_at;
	}
	else
	{
		// Convert everything
		$result = $db->query('SELECT * FROM '.$table.(is_null($start_at) ? '' : ' WHERE '.$key.'>'.$start_at).' ORDER BY '.$key.' ASC'.(is_null($start_at ) ? '' : ' LIMIT '.PER_PAGE)) or error('Unable to select from table', __FILE__, __LINE__, $db->error());
		while ($cur_item = $db->fetch_assoc($result))
		{
			$cur_item = call_user_func($callback, $cur_item, $old_charset);

			$temp = array();
			foreach ($cur_item as $idx => $value)
				$temp[] = $idx.'='.(is_null($value) ? 'NULL' : '\''.$db->escape($value).'\'');

			if (!empty($temp))
				$db->query('UPDATE '.$table.' SET '.implode(', ', $temp).' WHERE '.$key.'=\''.$db->escape($cur_item[$key]).'\'') or error('Unable to update data', __FILE__, __LINE__, $db->error());

			$end_at = $cur_item[$key];
		}

		if (!is_null($start_at) && $end_at > 0)
		{
			$result = $db->query('SELECT 1 FROM '.$table.' WHERE '.$key.'>'.$end_at.' ORDER BY '.$key.' ASC LIMIT 1') or error('Unable to check for next row', __FILE__, __LINE__, $db->error());
			if ($db->num_rows($result) == 0)
				return true;

			return $end_at;
		}

		return true;
	}
}


header('Content-type: text/html; charset=utf-8');

// Empty all output buffers and stop buffering
while (@ob_end_clean());


$stage = isset($_REQUEST['stage']) ? $_REQUEST['stage'] : '';
$old_charset = isset($_REQUEST['req_old_charset']) ? str_replace('ISO8859', 'ISO-8859', strtoupper($_REQUEST['req_old_charset'])) : 'ISO-8859-1';
$start_at = isset($_REQUEST['start_at']) ? intval($_REQUEST['start_at']) : 0;
$query_str = '';

// Show form
if (empty($stage))
{
	if (file_exists(FORUM_CACHE_DIR.'db_update.lock'))
	{
		// Deal with newlines, tabs and multiple spaces
		$pattern = array("\t", '  ', '  ');
		$replace = array('&#160; &#160; ', '&#160; ', ' &#160;');
		$message = str_replace($pattern, $replace, $pun_config['o_maintenance_message']);

?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $lang_common['lang_identifier'] ?>" lang="<?php echo $lang_common['lang_identifier'] ?>" dir="<?php echo $lang_common['lang_direction'] ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo $lang_update['Maintenance'] ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $default_style ?>.css" />
</head>
<body>

<div id="punmaint" class="pun">
<div class="top-box"><div><!-- Top Corners --></div></div>
<div class="punwrap">

<div id="brdmain">
<div class="block">
	<h2><?php echo $lang_update['Maintenance'] ?></h2>
	<div class="box">
		<div class="inbox">
			<p><?php echo $message ?></p>
		</div>
	</div>
</div>
</div>

</div>
<div class="end-box"><div><!-- Bottom Corners --></div></div>
</div>

</body>
</html>
<?php

	}
	else
	{

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $lang_common['lang_identifier'] ?>" lang="<?php echo $lang_common['lang_identifier'] ?>" dir="<?php echo $lang_common['lang_direction'] ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo $lang_update['Update'] ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $default_style ?>.css" />
</head>
<body onload="document.getElementById('install').req_db_pass.focus();document.getElementById('install').start.disabled=false;">

<div id="pundb_update" class="pun">
<div class="top-box"><div><!-- Top Corners --></div></div>
<div class="punwrap">

<div id="brdheader" class="block">
	<div class="box">
		<div id="brdtitle" class="inbox">
			<h1><span><?php echo $lang_update['Update'] ?></span></h1>
			<div id="brddesc"><p><?php echo $lang_update['Update message'] ?></p><p><strong><?php echo $lang_update['Note']; ?></strong> <?php echo $lang_update['Members message']; ?></p></div>
		</div>
	</div>
</div>

<div id="brdmain">
<div class="blockform">
	<h2><span><?php echo $lang_update['Update'] ?></span></h2>
	<div class="box">
		<form id="install" method="post" action="db_update.php">
			<input type="hidden" name="stage" value="start" />
			<div class="inform">
				<fieldset>
				<legend><?php echo $lang_update['Administrator only'] ?></legend>
					<div class="infldset">
						<p><?php echo $lang_update['Database password info'] ?></p>
						<p><strong><?php echo $lang_update['Note']; ?></strong> <?php echo $lang_update['Database password note'] ?></p>
						<label class="required"><strong><?php echo $lang_update['Database password'] ?> <span><?php echo $lang_update['Required'] ?></span></strong><br /><input type="password" id="req_db_pass" name="req_db_pass" /><br /></label>
						<p><?php echo $lang_update['Maintenance message info'] ?></p>
						<div class="txtarea">
							<label class="required"><strong><?php echo $lang_update['Maintenance message'] ?> <span><?php echo $lang_update['Required'] ?></span></strong><br />
							<textarea name="req_maintenance_message" rows="4" cols="65"><?php echo pun_htmlspecialchars($pun_config['o_maintenance_message']) ?></textarea><br /></label>
						</div>
					</div>
				</fieldset>
			</div>
			<div class="inform">
				<div class="forminfo">
					<p><?php echo $lang_update['Intro 1'] ?></p>
					<p><?php echo $lang_update['Intro 2'] ?></p>
<?php

	if (strpos($cur_version, '1.2') === 0)
	{
		if (!function_exists('iconv') && !function_exists('mb_convert_encoding'))
		{

?>
					<p><?php echo $lang_update['No charset conversion'] ?></p>
<?php

		}

?>
				</div>
			</div>
			<div class="inform">
				<div class="forminfo">
					<p><?php echo $lang_update['Enable conversion'] ?></p>
					<p><?php echo $lang_update['Current character set'] ?></p>
				</div>
				<fieldset>
					<legend><?php echo $lang_update['Charset conversion'] ?></legend>
					<div class="infldset">
						<div class="rbox">
							<label><input type="checkbox" name="convert_charset" value="1" checked="checked" /><?php echo $lang_update['Enable conversion label'] ?><br /></label>
						</div>
						<label>
							<strong><?php echo $lang_update['Current character set label'] ?></strong><br /><?php echo $lang_update['Current character set info'] ?><br />
							<input type="text" name="req_old_charset" size="12" maxlength="20" value="<?php echo $old_charset ?>" /><br />
						</label>
					</div>
				</fieldset>
<?php

	}
	else
		echo "\t\t\t\t".'</div>'."\n";

?>
			</div>
			<p class="buttons"><input type="submit" name="start" value="<?php echo $lang_update['Start update'] ?>" /></p>
		</form>
	</div>
</div>
</div>

</div>
<div class="end-box"><div><!-- Bottom Corners --></div></div>
</div>

</body>
</html>
<?php

	}
	$db->end_transaction();
	$db->close();
	exit;

}

// Read the lock file
$lock = file_exists(FORUM_CACHE_DIR.'db_update.lock') ? trim(file_get_contents(FORUM_CACHE_DIR.'db_update.lock')) : false;
$lock_error = false;

// Generate or fetch the UID - this confirms we have a valid admin
if (isset($_POST['req_db_pass']))
{
	$req_db_pass = strtolower(pun_trim($_POST['req_db_pass']));

	switch ($db_type)
	{
		// For SQLite we compare against the database file name, since the password is left blank
		case 'sqlite':
			if ($req_db_pass != strtolower($db_name))
				error(sprintf($lang_update['Invalid file error'], 'config.php'));

			break;
		// For everything else, check the password matches
		default:
			if ($req_db_pass != strtolower($db_password))
				error(sprintf($lang_update['Invalid password error'], 'config.php'));

			break;
	}

	// Generate a unique id to identify this session, only if this is a valid session
	$uid = pun_hash($req_db_pass.'|'.uniqid(rand(), true));
	if ($lock) // We already have a lock file
		$lock_error = true;
	else // Create the lock file
	{
		$fh = @fopen(FORUM_CACHE_DIR.'db_update.lock', 'wb');
		if (!$fh)
			error(sprintf($lang_update['Unable to lock error'], 'cache'));

		fwrite($fh, $uid);
		fclose($fh);

		// Update maintenance message
		if ($_POST['req_maintenance_message'] != '')
			$maintenance_message = pun_trim(pun_linebreaks($_POST['req_maintenance_message']));
		else
		{
			// Load the admin_options.php language file
			require PUN_ROOT.'lang/'.$default_lang.'/admin_options.php';

			$maintenance_message = $lang_admin_options['Default maintenance message'];
		}

		$db->query('UPDATE '.$db->prefix.'config SET conf_value=\''.$db->escape($maintenance_message).'\' WHERE conf_name=\'o_maintenance_message\'') or error('Unable to update board config', __FILE__, __LINE__, $db->error());

		// Regenerate the config cache
		if (!defined('FORUM_CACHE_FUNCTIONS_LOADED'))
			require PUN_ROOT.'include/cache.php';

		generate_config_cache();
	}
}
else if (isset($_GET['uid']))
{
	$uid = pun_trim($_GET['uid']);
	if (!$lock || $lock !== $uid) // The lock doesn't exist or doesn't match the given UID
		$lock_error = true;
}
else
	error($lang_update['No password error']);

// If there is an error with the lock file
if ($lock_error)
	error(sprintf($lang_update['Script runs error'], FORUM_CACHE_DIR.'db_update.lock'));

switch ($stage)
{
	// Start by updating the database structure
	case 'start':
		$query_str = '?stage=preparse_posts';

		// If we don't need to update the database, skip this stage
		if (isset($pun_config['o_database_revision']) && $pun_config['o_database_revision'] >= UPDATE_TO_DB_REVISION)
			break;

		// Make all email fields VARCHAR(80)
		$db->alter_field('bans', 'email', 'VARCHAR(80)', true) or error('Unable to alter email field', __FILE__, __LINE__, $db->error());
		$db->alter_field('posts', 'poster_email', 'VARCHAR(80)', true) or error('Unable to alter poster_email field', __FILE__, __LINE__, $db->error());
		$db->alter_field('users', 'email', 'VARCHAR(80)', false, '') or error('Unable to alter email field', __FILE__, __LINE__, $db->error());
		$db->alter_field('users', 'jabber', 'VARCHAR(80)', true) or error('Unable to alter jabber field', __FILE__, __LINE__, $db->error());
		$db->alter_field('users', 'msn', 'VARCHAR(80)', true) or error('Unable to alter msn field', __FILE__, __LINE__, $db->error());
		$db->alter_field('users', 'activate_string', 'VARCHAR(80)', true) or error('Unable to alter activate_string field', __FILE__, __LINE__, $db->error());

		// Make all IP fields VARCHAR(39) to support IPv6
		$db->alter_field('posts', 'poster_ip', 'VARCHAR(39)', true) or error('Unable to alter poster_ip field', __FILE__, __LINE__, $db->error());
		$db->alter_field('users', 'registration_ip', 'VARCHAR(39)', false, '0.0.0.0') or error('Unable to alter registration_ip field', __FILE__, __LINE__, $db->error());

		// Make the message field MEDIUMTEXT to allow proper conversion of 65535 character posts to UTF-8
		$db->alter_field('posts', 'message', 'MEDIUMTEXT', true) or error('Unable to alter message field', __FILE__, __LINE__, $db->error());

		// Add the DST option to the users table
		$db->add_field('users', 'dst', 'TINYINT(1)', false, 0, 'timezone') or error('Unable to add dst field', __FILE__, __LINE__, $db->error());

		// Add the last_post column to the online table
		$db->add_field('online', 'last_post', 'INT(10) UNSIGNED', true, null, null) or error('Unable to add last_post field', __FILE__, __LINE__, $db->error());

		// Add the last_search column to the online table
		$db->add_field('online', 'last_search', 'INT(10) UNSIGNED', true, null, null) or error('Unable to add last_search field', __FILE__, __LINE__, $db->error());

		// Add the last_search column to the users table
		$db->add_field('users', 'last_search', 'INT(10) UNSIGNED', true, null, 'last_post') or error('Unable to add last_search field', __FILE__, __LINE__, $db->error());

		// Drop use_avatar column from users table
		$db->drop_field('users', 'use_avatar') or error('Unable to drop use_avatar field', __FILE__, __LINE__, $db->error());

		// Drop save_pass column from users table
		$db->drop_field('users', 'save_pass') or error('Unable to drop save_pass field', __FILE__, __LINE__, $db->error());

		// Drop g_edit_subjects_interval column from groups table
		$db->drop_field('groups', 'g_edit_subjects_interval');

		// Add database revision number
		if (!array_key_exists('o_database_revision', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_database_revision\', \'0\')') or error('Unable to insert config value \'o_database_revision\'', __FILE__, __LINE__, $db->error());

		// Add search index revision number
		if (!array_key_exists('o_searchindex_revision', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_searchindex_revision\', \'0\')') or error('Unable to insert config value \'o_searchindex_revision\'', __FILE__, __LINE__, $db->error());

		// Add parser revision number
		if (!array_key_exists('o_parser_revision', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_parser_revision\', \'0\')') or error('Unable to insert config value \'o_parser_revision\'', __FILE__, __LINE__, $db->error());

		// Add default email setting option
		if (!array_key_exists('o_default_email_setting', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_default_email_setting\', \'1\')') or error('Unable to insert config value \'o_default_email_setting\'', __FILE__, __LINE__, $db->error());

		// Make sure we have o_additional_navlinks (was added in 1.2.1)
		if (!array_key_exists('o_additional_navlinks', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_additional_navlinks\', \'\')') or error('Unable to insert config value \'o_additional_navlinks\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_topic_views
		if (!array_key_exists('o_topic_views', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_topic_views\', \'1\')') or error('Unable to insert config value \'o_topic_views\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_signatures
		if (!array_key_exists('o_signatures', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_signatures\', \'1\')') or error('Unable to insert config value \'o_signatures\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_smtp_ssl
		if (!array_key_exists('o_smtp_ssl', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_smtp_ssl\', \'0\')') or error('Unable to insert config value \'o_smtp_ssl\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_default_dst
		if (!array_key_exists('o_default_dst', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_default_dst\', \'0\')') or error('Unable to insert config value \'o_default_dst\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_quote_depth
		if (!array_key_exists('o_quote_depth', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_quote_depth\', \'3\')') or error('Unable to insert config value \'o_quote_depth\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_feed_type
		if (!array_key_exists('o_feed_type', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_feed_type\', \'2\')') or error('Unable to insert config value \'o_feed_type\'', __FILE__, __LINE__, $db->error());

		// Insert new config option o_feed_ttl
		if (!array_key_exists('o_feed_ttl', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_feed_ttl\', \'0\')') or error('Unable to insert config value \'o_feed_ttl\'', __FILE__, __LINE__, $db->error());

		// Insert config option o_base_url which was removed in 1.3
		if (!array_key_exists('o_base_url', $pun_config))
		{
			// If it isn't in $pun_config['o_base_url'] it should be in $base_url, but just in-case it isn't we can make a guess at it
			if (!isset($base_url))
			{
				// Make an educated guess regarding base_url
				$base_url  = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 'https://' : 'http://';	// protocol
				$base_url .= preg_replace('%:(80|443)$%', '', $_SERVER['HTTP_HOST']);							// host[:port]
				$base_url .= str_replace('\\', '/', dirname($_SERVER['SCRIPT_NAME']));							// path
			}

			if (substr($base_url, -1) == '/')
				$base_url = substr($base_url, 0, -1);

			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_base_url\', \''.$db->escape($base_url).'\')') or error('Unable to insert config value \'o_base_url\'', __FILE__, __LINE__, $db->error());
		}

		if (strpos($cur_version, '1.2') === 0)
		{
			// Groups are almost the same as 1.2:
			// unverified:	32000 -> 0

			$db->query('UPDATE '.$db->prefix.'users SET group_id = 0 WHERE group_id = 32000') or error('Unable to update unverified users', __FILE__, __LINE__, $db->error());
		}
		else if (strpos($cur_version, '1.3') === 0)
		{
			// Groups have changed quite a lot from 1.3:
			// unverified:	0 -> 0
			// admin:		1 -> 1
			// mod:			? -> 2
			// guest:		2 -> 3
			// member:		? -> 4

			$result = $db->query('SELECT MAX(g_id) + 1 FROM '.$db->prefix.'groups') or error('Unable to select temp group ID', __FILE__, __LINE__, $db->error());
			$temp_id = $db->result($result);

			$result = $db->query('SELECT g_id FROM '.$db->prefix.'groups WHERE g_moderator = 1 AND g_id > 1 LIMIT 1') or error('Unable to select moderator group', __FILE__, __LINE__, $db->error());
			if ($db->num_rows($result))
				$mod_gid = $db->result($result);
			else
			{
				$db->query('INSERT INTO '.$db->prefix.'groups (g_title, g_user_title, g_moderator, g_mod_edit_users, g_mod_rename_users, g_mod_change_passwords, g_mod_ban_users, g_read_board, g_view_users, g_post_replies, g_post_topics, g_edit_posts, g_delete_posts, g_delete_topics, g_set_title, g_search, g_search_users, g_send_email, g_post_flood, g_search_flood, g_email_flood, g_report_flood) VALUES('."'Moderators', 'Moderator', 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0)") or error('Unable to add group', __FILE__, __LINE__, $db->error());
				$mod_gid = $db->insert_id();
			}

			$member_gid = $pun_config['o_default_user_group'];

			// move the mod group to a temp place
			$db->query('UPDATE '.$db->prefix.'groups SET g_id = '.$temp_id.' WHERE g_id = '.$mod_gid) or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'users SET group_id = '.$temp_id.' WHERE group_id = '.$mod_gid) or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = '.$temp_id.' WHERE group_id = '.$mod_gid) or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());
			if ($member_gid == $mod_gid) $member_gid = $temp_id;

			// move whoever is in 3 to a spare slot
			$db->query('UPDATE '.$db->prefix.'groups SET g_id = '.$mod_gid.' WHERE g_id = 3') or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'users SET group_id = '.$mod_gid.' WHERE group_id = 3') or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = '.$mod_gid.' WHERE group_id = 3') or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());
			if ($member_gid == 3) $member_gid = $mod_gid;

			// move guest to 3
			$db->query('UPDATE '.$db->prefix.'groups SET g_id = 3 WHERE g_id = 2') or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'users SET group_id = 3 WHERE group_id = 2') or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = 3 WHERE group_id = 2') or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());
			if ($member_gid == 2) $member_gid = 3;

			// move mod group in temp place to 2
			$db->query('UPDATE '.$db->prefix.'groups SET g_id = 2 WHERE g_id = '.$temp_id) or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'users SET group_id = 2 WHERE group_id = '.$temp_id) or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
			$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = 2 WHERE group_id = '.$temp_id) or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());
			if ($member_gid == $temp_id) $member_gid = 2;

			// Only move stuff around if it isn't already in the right place
			if ($member_gid != $mod_gid || $member_gid != 4)
			{
				// move members to temp place
				$db->query('UPDATE '.$db->prefix.'groups SET g_id = '.$temp_id.' WHERE g_id = '.$member_gid) or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'users SET group_id = '.$temp_id.' WHERE group_id = '.$member_gid) or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = '.$temp_id.' WHERE group_id = '.$member_gid) or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());

				// move whoever is in 4 to members place
				$db->query('UPDATE '.$db->prefix.'groups SET g_id = '.$member_gid.' WHERE g_id = 4') or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'users SET group_id = '.$member_gid.' WHERE group_id = 4') or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = '.$member_gid.' WHERE group_id = 4') or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());

				// move members in temp place to 4
				$db->query('UPDATE '.$db->prefix.'groups SET g_id = 4 WHERE g_id = '.$temp_id) or error('Unable to update group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'users SET group_id = 4 WHERE group_id = '.$temp_id) or error('Unable to update users group ID', __FILE__, __LINE__, $db->error());
				$db->query('UPDATE '.$db->prefix.'forum_perms SET group_id = 4 WHERE group_id = '.$temp_id) or error('Unable to forum_perms group ID', __FILE__, __LINE__, $db->error());
			}

			$db->query('UPDATE '.$db->prefix.'config SET conf_value=\''.$member_gid.'\' WHERE conf_name=\'o_default_user_group\'') or error('Unable to update default user group ID', __FILE__, __LINE__, $db->error());
		}

		// Server time zone is now simply the default time zone
		if (!array_key_exists('o_default_timezone', $pun_config))
			$db->query('UPDATE '.$db->prefix.'config SET conf_name = \'o_default_timezone\' WHERE conf_name = \'o_server_timezone\'') or error('Unable to update time zone config', __FILE__, __LINE__, $db->error());

		// Increase visit timeout to 30 minutes (only if it hasn't been changed from the default)
		if (!array_key_exists('o_database_revision', $pun_config) && $pun_config['o_timeout_visit'] == '600')
			$db->query('UPDATE '.$db->prefix.'config SET conf_value = \'1800\' WHERE conf_name = \'o_timeout_visit\'') or error('Unable to update visit timeout config', __FILE__, __LINE__, $db->error());

		// Remove obsolete g_post_polls permission from groups table
		$db->drop_field('groups', 'g_post_polls');

		// Make room for multiple moderator groups
		if (!$db->field_exists('groups', 'g_moderator'))
		{
			// Add g_moderator column to groups table
			$db->add_field('groups', 'g_moderator', 'TINYINT(1)', false, 0, 'g_user_title') or error('Unable to add g_moderator field', __FILE__, __LINE__, $db->error());

			// Give the moderator group moderator privileges
			$db->query('UPDATE '.$db->prefix.'groups SET g_moderator = 1 WHERE g_id = 2') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());
		}

		// Replace obsolete p_mod_edit_users config setting with new per-group permission
		if (array_key_exists('p_mod_edit_users', $pun_config))
		{
			$db->query('DELETE FROM '.$db->prefix.'config WHERE conf_name = \'p_mod_edit_users\'') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());

			$db->add_field('groups', 'g_mod_edit_users', 'TINYINT(1)', false, 0, 'g_moderator') or error('Unable to add g_mod_edit_users field', __FILE__, __LINE__, $db->error());

			$db->query('UPDATE '.$db->prefix.'groups SET g_mod_edit_users = '.$pun_config['p_mod_edit_users'].' WHERE g_moderator = 1') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());
		}

		// Replace obsolete p_mod_rename_users config setting with new per-group permission
		if (array_key_exists('p_mod_rename_users', $pun_config))
		{
			$db->query('DELETE FROM '.$db->prefix.'config WHERE conf_name = \'p_mod_rename_users\'') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());

			$db->add_field('groups', 'g_mod_rename_users', 'TINYINT(1)', false, 0, 'g_mod_edit_users') or error('Unable to add g_mod_rename_users field', __FILE__, __LINE__, $db->error());

			$db->query('UPDATE '.$db->prefix.'groups SET g_mod_rename_users = '.$pun_config['p_mod_rename_users'].' WHERE g_moderator = 1') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());
		}

		// Replace obsolete p_mod_change_passwords config setting with new per-group permission
		if (array_key_exists('p_mod_change_passwords', $pun_config))
		{
			$db->query('DELETE FROM '.$db->prefix.'config WHERE conf_name = \'p_mod_change_passwords\'') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());

			$db->add_field('groups', 'g_mod_change_passwords', 'TINYINT(1)', false, 0, 'g_mod_rename_users') or error('Unable to add g_mod_change_passwords field', __FILE__, __LINE__, $db->error());

			$db->query('UPDATE '.$db->prefix.'groups SET g_mod_change_passwords = '.$pun_config['p_mod_change_passwords'].' WHERE g_moderator = 1') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());
		}

		// Replace obsolete p_mod_ban_users config setting with new per-group permission
		if (array_key_exists('p_mod_ban_users', $pun_config))
		{
			$db->query('DELETE FROM '.$db->prefix.'config WHERE conf_name = \'p_mod_ban_users\'') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());

			$db->add_field('groups', 'g_mod_ban_users', 'TINYINT(1)', false, 0, 'g_mod_change_passwords') or error('Unable to add g_mod_ban_users field', __FILE__, __LINE__, $db->error());

			$db->query('UPDATE '.$db->prefix.'groups SET g_mod_ban_users = '.$pun_config['p_mod_ban_users'].' WHERE g_moderator = 1') or error('Unable to update moderator powers', __FILE__, __LINE__, $db->error());
		}

		// We need to add a unique index to avoid users having multiple rows in the online table
		if (!$db->index_exists('online', 'user_id_ident_idx'))
		{
			$db->truncate_table('online') or error('Unable to clear online table', __FILE__, __LINE__, $db->error());

			if ($mysql)
				$db->add_index('online', 'user_id_ident_idx', array('user_id', 'ident(25)'), true) or error('Unable to add user_id_ident_idx index', __FILE__, __LINE__, $db->error());
			else
				$db->add_index('online', 'user_id_ident_idx', array('user_id', 'ident'), true) or error('Unable to add user_id_ident_idx index', __FILE__, __LINE__, $db->error());
		}

		// Remove the redundant user_id_idx on the online table
		$db->drop_index('online', 'user_id_idx') or error('Unable to drop user_id_idx index', __FILE__, __LINE__, $db->error());

		// Add an index to ident on the online table
		if ($mysql)
			$db->add_index('online', 'ident_idx', array('ident(25)')) or error('Unable to add ident_idx index', __FILE__, __LINE__, $db->error());
		else
			$db->add_index('online', 'ident_idx', array('ident')) or error('Unable to add ident_idx index', __FILE__, __LINE__, $db->error());

		// Add an index to logged in the online table
		$db->add_index('online', 'logged_idx', array('logged')) or error('Unable to add logged_idx index', __FILE__, __LINE__, $db->error());

		// Add an index to last_post in the topics table
		$db->add_index('topics', 'last_post_idx', array('last_post')) or error('Unable to add last_post_idx index', __FILE__, __LINE__, $db->error());

		// Add an index to username on the bans table
		if ($mysql)
			$db->add_index('bans', 'username_idx', array('username(25)')) or error('Unable to add username_idx index', __FILE__, __LINE__, $db->error());
		else
			$db->add_index('bans', 'username_idx', array('username')) or error('Unable to add username_idx index', __FILE__, __LINE__, $db->error());

		// Change the username_idx on users to a unique index of max size 25
		$db->drop_index('users', 'username_idx') or error('Unable to drop old username_idx index', __FILE__, __LINE__, $db->error());
		$field = $mysql ? 'username(25)' : 'username';

		// Attempt to add a unique index. If the user doesn't use a transactional database this can fail due to multiple matching usernames in the
		// users table. This is bad, but just giving up if it happens is even worse! If it fails just add a regular non-unique index.
		if (!$db->add_index('users', 'username_idx', array($field), true))
			$db->add_index('users', 'username_idx', array($field)) or error('Unable to add username_idx field', __FILE__, __LINE__, $db->error());

		// Add g_view_users column to groups table
		$db->add_field('groups', 'g_view_users', 'TINYINT(1)', false, 1, 'g_read_board') or error('Unable to add g_view_users field', __FILE__, __LINE__, $db->error());

		// Add the last_email_sent column to the users table and the g_send_email and
		// g_email_flood columns to the groups table
		$db->add_field('users', 'last_email_sent', 'INT(10) UNSIGNED', true, null, 'last_search') or error('Unable to add last_email_sent field', __FILE__, __LINE__, $db->error());
		$db->add_field('groups', 'g_send_email', 'TINYINT(1)', false, 1, 'g_search_users') or error('Unable to add g_send_email field', __FILE__, __LINE__, $db->error());
		$db->add_field('groups', 'g_email_flood', 'SMALLINT(6)', false, 60, 'g_search_flood') or error('Unable to add g_email_flood field', __FILE__, __LINE__, $db->error());

		// Add the last_report_sent column to the users table and the g_report_flood
		// column to the groups table
		$db->add_field('users', 'last_report_sent', 'INT(10) UNSIGNED', true, null, 'last_email_sent') or error('Unable to add last_report_sent field', __FILE__, __LINE__, $db->error());
		$db->add_field('groups', 'g_report_flood', 'SMALLINT(6)', false, 60, 'g_email_flood') or error('Unable to add g_report_flood field', __FILE__, __LINE__, $db->error());

		// Set non-default g_send_email, g_flood_email and g_flood_report values properly
		$db->query('UPDATE '.$db->prefix.'groups SET g_send_email = 0 WHERE g_id = 3') or error('Unable to update group email permissions', __FILE__, __LINE__, $db->error());
		$db->query('UPDATE '.$db->prefix.'groups SET g_email_flood = 0, g_report_flood = 0 WHERE g_id IN (1,2,3)') or error('Unable to update group email permissions', __FILE__, __LINE__, $db->error());

		// Add the auto notify/subscription option to the users table
		$db->add_field('users', 'auto_notify', 'TINYINT(1)', false, 0, 'notify_with_post') or error('Unable to add auto_notify field', __FILE__, __LINE__, $db->error());

		// Add the first_post_id column to the topics table
		if (!$db->field_exists('topics', 'first_post_id'))
		{
			$db->add_field('topics', 'first_post_id', 'INT(10) UNSIGNED', false, 0, 'posted') or error('Unable to add first_post_id field', __FILE__, __LINE__, $db->error());
			$db->add_index('topics', 'first_post_id_idx', array('first_post_id')) or error('Unable to add first_post_id_idx index', __FILE__, __LINE__, $db->error());

			// Now that we've added the column and indexed it, we need to give it correct data
			$result = $db->query('SELECT MIN(id) AS first_post, topic_id FROM '.$db->prefix.'posts GROUP BY topic_id') or error('Unable to fetch first_post_id', __FILE__, __LINE__, $db->error());

			while ($cur_post = $db->fetch_assoc($result))
				$db->query('UPDATE '.$db->prefix.'topics SET first_post_id = '.$cur_post['first_post'].' WHERE id = '.$cur_post['topic_id']) or error('Unable to update first_post_id', __FILE__, __LINE__, $db->error());
		}

		// Move any users with the old unverified status to their new group
		$db->query('UPDATE '.$db->prefix.'users SET group_id=0 WHERE group_id=32000') or error('Unable to move unverified users', __FILE__, __LINE__, $db->error());

		// Add the ban_creator column to the bans table
		$db->add_field('bans', 'ban_creator', 'INT(10) UNSIGNED', false, 0) or error('Unable to add ban_creator field', __FILE__, __LINE__, $db->error());

		// Add the time/date format settings to the user table
		$db->add_field('users', 'time_format', 'TINYINT(1)', false, 0, 'dst') or error('Unable to add time_format field', __FILE__, __LINE__, $db->error());
		$db->add_field('users', 'date_format', 'TINYINT(1)', false, 0, 'dst') or error('Unable to add date_format field', __FILE__, __LINE__, $db->error());

		// Change the search_data column to mediumtext
		$db->alter_field('search_cache', 'search_data', 'MEDIUMTEXT', true) or error('Unable to alter search_data field', __FILE__, __LINE__, $db->error());

		// Add the group promotion columns to the groups table
		$db->add_field('groups', 'g_promote_min_posts', 'INT(10) UNSIGNED', false, 0, 'g_user_title') or error('Unable to add g_promote_min_posts field', __FILE__, __LINE__, $db->error());
		$db->add_field('groups', 'g_promote_next_group', 'INT(10) UNSIGNED', false, 0, 'g_promote_min_posts') or error('Unable to add g_promote_next_group field', __FILE__, __LINE__, $db->error());

		// Add a field for the per-group permission to post links
		$db->add_field('groups', 'g_post_links', 'TINYINT(1)', false, 1, 'g_delete_topics') or error('Unable to add per-group permission to post links', __FILE__, __LINE__, $db->error());

		// Add a field for the per-group permission to promote users to the next auto-promote group
		$db->add_field('groups', 'g_mod_promote_users', 'TINYINT(1)', false, 0, 'g_mod_ban_users') or error('Unable to add per-group permission to promote users', __FILE__, __LINE__, $db->error());

		// In case we had the fulltext search extension installed (1.3-legacy), remove it
		$db->drop_index('topics', 'subject_idx') or error('Unable to drop subject_idx index', __FILE__, __LINE__, $db->error());
		$db->drop_index('posts', 'message_idx') or error('Unable to drop message_idx index', __FILE__, __LINE__, $db->error());
		// In case we had the fulltext search mod installed (1.2), remove it
		$db->drop_index('topics', 'subject_fulltext_search') or error('Unable to drop subject_fulltext_search index', __FILE__, __LINE__, $db->error());
		$db->drop_index('posts', 'message_fulltext_search') or error('Unable to drop message_fulltext_search index', __FILE__, __LINE__, $db->error());

		// If the search_cache table has been dropped by the fulltext search extension, recreate it
		if (!$db->table_exists('search_cache'))
		{
			$schema = array(
				'FIELDS'		=> array(
					'id'			=> array(
						'datatype'		=> 'INT(10) UNSIGNED',
						'allow_null'	=> false,
						'default'		=> '0'
					),
					'ident'			=> array(
						'datatype'		=> 'VARCHAR(200)',
						'allow_null'	=> false,
						'default'		=> '\'\''
					),
					'search_data'	=> array(
						'datatype'		=> 'MEDIUMTEXT',
						'allow_null'	=> true
					)
				),
				'PRIMARY KEY'	=> array('id'),
				'INDEXES'		=> array(
					'ident_idx'	=> array('ident')
				)
			);

			if ($db_type == 'mysql' || $db_type == 'mysqli' || $db_type == 'mysql_innodb' || $db_type == 'mysqli_innodb')
				$schema['INDEXES']['ident_idx'] = array('ident(8)');

			$db->create_table('search_cache', $schema);
		}

		// If the search_matches table has been dropped by the fulltext search extension, recreate it
		if (!$db->table_exists('search_matches'))
		{
			$schema = array(
				'FIELDS'		=> array(
					'post_id'		=> array(
						'datatype'		=> 'INT(10) UNSIGNED',
						'allow_null'	=> false,
						'default'		=> '0'
					),
					'word_id'		=> array(
						'datatype'		=> 'INT(10) UNSIGNED',
						'allow_null'	=> false,
						'default'		=> '0'
					),
					'subject_match'	=> array(
						'datatype'		=> 'TINYINT(1)',
						'allow_null'	=> false,
						'default'		=> '0'
					)
				),
				'INDEXES'		=> array(
					'word_id_idx'	=> array('word_id'),
					'post_id_idx'	=> array('post_id')
				)
			);

			$db->create_table('search_matches', $schema);
		}

		// If the search_words table has been dropped by the fulltext search extension, recreate it
		if (!$db->table_exists('search_words'))
		{
			$schema = array(
				'FIELDS'		=> array(
					'id'			=> array(
						'datatype'		=> 'SERIAL',
						'allow_null'	=> false
					),
					'word'			=> array(
						'datatype'		=> 'VARCHAR(20)',
						'allow_null'	=> false,
						'default'		=> '\'\'',
						'collation'		=> 'bin'
					)
				),
				'PRIMARY KEY'	=> array('word'),
				'INDEXES'		=> array(
					'id_idx'	=> array('id')
				)
			);

			if ($db_type == 'sqlite')
			{
				$schema['PRIMARY KEY'] = array('id');
				$schema['UNIQUE KEYS'] = array('word_idx'	=> array('word'));
			}

			$db->create_table('search_words', $schema);
		}

		// Rename the subscription table
		$db->rename_table('subscriptions', 'topic_subscriptions');

		// if we don't have the forum_subscriptions table, create it
		if (!$db->table_exists('forum_subscriptions'))
		{
			$schema = array(
				'FIELDS'		=> array(
					'user_id'		=> array(
						'datatype'		=> 'INT(10) UNSIGNED',
						'allow_null'	=> false,
						'default'		=> '0'
					),
					'forum_id'		=> array(
						'datatype'		=> 'INT(10) UNSIGNED',
						'allow_null'	=> false,
						'default'		=> '0'
					)
				),
				'PRIMARY KEY'	=> array('user_id', 'forum_id')
			);

			$db->create_table('forum_subscriptions', $schema) or error('Unable to create forum subscriptions table', __FILE__, __LINE__, $db->error());
		}

		// Insert new config option o_forum_subscriptions
		if (!array_key_exists('o_forum_subscriptions', $pun_config))
			$db->query('INSERT INTO '.$db->prefix.'config (conf_name, conf_value) VALUES (\'o_forum_subscriptions\', \'1\')') or error('Unable to insert config value \'o_forum_subscriptions\'', __FILE__, __LINE__, $db->error());

		// Rename config option o_subscriptions to o_topic_subscriptions
		if (!array_key_exists('o_topic_subscriptions', $pun_config))
			$db->query('UPDATE '.$db->prefix.'config SET conf_name=\'o_topic_subscriptions\' WHERE conf_name=\'o_subscriptions\'') or error('Unable to rename config value \'o_subscriptions\'', __FILE__, __LINE__, $db->error());

		// Change the default style if the old doesn't exist anymore
		if ($pun_config['o_default_style'] != $default_style)
			$db->query('UPDATE '.$db->prefix.'config SET conf_value = \''.$db->escape($default_style).'\' WHERE conf_name = \'o_default_style\'') or error('Unable to update default style config', __FILE__, __LINE__, $db->error());

		// For MySQL(i) without InnoDB, change the engine of the online table (for performance reasons)
		if ($db_type == 'mysql' || $db_type == 'mysqli')
			$db->query('ALTER TABLE '.$db->prefix.'online ENGINE = MyISAM') or error('Unable to change engine type of online table to MyISAM', __FILE__, __LINE__, $db->error());

		// Remove config option o_ranks
		if (array_key_exists('o_ranks', $pun_config))
			$db->query('DELETE FROM '.$db->prefix.'config WHERE conf_name=\'o_ranks\'') or error('Unable to remove config value \'o_ranks\'', __FILE__, __LINE__, $db->error());

		// Remove the ranks table
		if ($db->table_exists('ranks'))
			$db->drop_table('ranks') or error('Unable to drop ranks table', __FILE__, __LINE__, $db->error());

		// Should we do charset conversion or not?
		if (strpos($cur_version, '1.2') === 0 && isset($_POST['convert_charset']))
			$query_str = '?stage=conv_bans&req_old_charset='.$old_charset;

		break;


	// Convert bans
	case 'conv_bans':
		$query_str = '?stage=conv_categories&req_old_charset='.$old_charset;

		function _conv_bans($cur_item, $old_charset)
		{
			global $lang_update;

			echo sprintf($lang_update['Converting item'], $lang_update['ban'], $cur_item['id']).'<br />'."\n";

			convert_to_utf8($cur_item['username'], $old_charset);
			convert_to_utf8($cur_item['message'], $old_charset);

			return $cur_item;
		}

		$end_at = convert_table_utf8($db->prefix.'bans', '_conv_bans', $old_charset, 'id', $start_at);

		if ($end_at !== true)
			$query_str = '?stage=conv_bans&req_old_charset='.$old_charset.'&start_at='.$end_at;

		break;


	// Convert categories
	case 'conv_categories':
		$query_str = '?stage=conv_censors&req_old_charset='.$old_charset;

		echo sprintf($lang_update['Converting'], $lang_update['categories']).'<br />'."\n";

		function _conv_categories($cur_item, $old_charset)
		{
			convert_to_utf8($cur_item['cat_name'], $old_charset);

			return $cur_item;
		}

		convert_table_utf8($db->prefix.'categories', '_conv_categories', $old_charset, 'id');

		break;


	// Convert censor words
	case 'conv_censors':
		$query_str = '?stage=conv_config&req_old_charset='.$old_charset;

		echo sprintf($lang_update['Converting'], $lang_update['censor words']).'<br />'."\n";

		function _conv_censoring($cur_item, $old_charset)
		{
			convert_to_utf8($cur_item['search_for'], $old_charset);
			convert_to_utf8($cur_item['replace_with'], $old_charset);

			return $cur_item;
		}

		convert_table_utf8($db->prefix.'censoring', '_conv_censoring', $old_charset, 'id');

		break;


	// Convert config
	case 'conv_config':
		$query_str = '?stage=conv_forums&req_old_charset='.$old_charset;

		echo sprintf($lang_update['Converting'], $lang_update['configuration']).'<br />'."\n";

		function _conv_config($cur_item, $old_charset)
		{
			convert_to_utf8($cur_item['conf_value'], $old_charset);

			return $cur_item;
		}

		convert_table_utf8($db->prefix.'config', '_conv_config', $old_charset, 'conf_name');

		break;


	// Convert forums
	case 'conv_forums':
		$query_str = '?stage=conv_perms&req_old_charset='.$old_charset;

		echo sprintf($lang_update['Converting'], $lang_update['forums']).'<br />'."\n";

		function _conv_forums($cur_item, $old_charset)
		{
			$moderators = ($cur_item['moderators'] != '') ? unserialize($cur_item['moderators']) : array();
			$moderators_utf8 = array();
			foreach ($moderators as $mod_username => $mod_user_id)
			{
				convert_to_utf8($mod_username, $old_charset);
				$moderators_utf8[$mod_username] = $mod_user_id;
			}

			convert_to_utf8($cur_item['forum_name'], $old_charset);
			convert_to_utf8($cur_item['forum_desc'], $old_charset);
			convert_to_utf8($cur_item['last_poster'], $old_charset);

			if (!empty($moderators_utf8))
				$cur_item['moderators'] = serialize($moderators_utf8);

			return $cur_item;
		}

		convert_table_utf8($db->prefix.'forums', '_conv_forums', $old_charset, 'id');

		break;


	// Convert forum permissions
	case 'conv_perms':
		$query_str = '?stage=conv_groups&req_old_charset='.$old_charset;

		alter_table_utf8($db->prefix.'forum_perms');

		break;


	// Convert groups
	case 'conv_groups':
		$query_str = '?stage=conv_online&req_old_charset='.$old_charset;

		echo sprintf($lang_update['Converting'], $lang_update['groups']).'<br />'."\n";

		function _conv_groups($cur_item, $old_charset)
		{
			convert_to_utf8($cur_item['g_title'], $old_charset);
			convert_to_utf8($cur_item['g_user_title'], $old_charset);

			return $cur_item;
		}

		convert_table_utf8($db->prefix.'groups', '_conv_groups', $old_charset, 'g_id');

		break;


	// Convert online
	case 'conv_online':
		$query_str = '?stage=conv_posts&req_old_charset='.$old_charset;

		// Truncate the table
		$db->truncate_table('online') or error('Unable to empty online table', __FILE__, __LINE__, $db->error());

		alter_table_utf8($db->prefix.'online');

		break;


	// Convert posts
	case 'conv_posts':
		$query_str = '?stage=conv_reports&req_old_charset='.$old_charset;

		function _conv_posts($cur_item, $old_charset)
		{
			global $lang_update;

			echo sprintf($lang_update['Converting item'], $lang_update['post'], $cur_item['id']).'<br />'."\n";

			convert_to_utf8($cur_item['poster'], $old_charset);
			convert_to_utf8($cur_item['message'], $old_charset);
			convert_to_utf8($cur_item['edited_by'], $old_charset);

			return $cur_item;
		}

		$end_at = convert_table_utf8($db->prefix.'posts', '_conv_posts', $old_charset, 'id', $start_at);

		if ($end_at !== true)
			$query_str = '?stage=conv_posts&req_old_charset='.$old_charset.'&start_at='.$end_at;

		break;


	// Convert reports
	case 'conv_reports':
		$query_str = '?stage=conv_search_cache&req_old_charset='.$old_charset;

		function _conv_reports($cur_item, $old_charset)
		{
			global $lang_update;

			echo sprintf($lang_update['Converting item'], $lang_update['report'], $cur_item['id']).'<br />'."\n";

			convert_to_utf8($cur_item['message'], $old_charset);

			return $cur_item;
		}

		$end_at = convert_table_utf8($db->prefix.'reports', '_conv_reports', $old_charset, 'id', $start_at);

		if ($end_at !== true)
			$query_str = '?stage=conv_reports&req_old_charset='.$old_charset.'&start_at='.$end_at;

		break;


	// Convert search cache
	case 'conv_search_cache':
		$query_str = '?stage=conv_search_matches&req_old_charset='.$old_charset;

		// Truncate the table
		$db->truncate_table('search_cache') or error('Unable to empty search cache table', __FILE__, __LINE__, $db->error());

		alter_table_utf8($db->prefix.'search_cache');

		break;


	// Convert search matches
	case 'conv_search_matches':
		$query_str = '?stage=conv_search_words&req_old_charset='.$old_charset;

		// Truncate the table
		$db->truncate_table('search_matches') or error('Unable to empty search index match table', __FILE__, __LINE__, $db->error());

		alter_table_utf8($db->prefix.'search_matches');

		break;


	// Convert search words
	case 'conv_search_words':
		$query_str = '?stage=conv_subscriptions&req_old_charset='.$old_charset;

		// Truncate the table
		$db->truncate_table('search_words') or error('Unable to empty search index words table', __FILE__, __LINE__, $db->error());

		// Reset the sequence for the search words (not needed for SQLite)
		switch ($db_type)
		{
			case 'mysql':
			case 'mysqli':
			case 'mysql_innodb':
			case 'mysqli_innodb':
				$db->query('ALTER TABLE '.$db->prefix.'search_words auto_increment=1') or error('Unable to update table auto_increment', __FILE__, __LINE__, $db->error());
				break;

			case 'pgsql';
				$db->query('SELECT setval(\''.$db->prefix.'search_words_id_seq\', 1, false)') or error('Unable to update sequence', __FILE__, __LINE__, $db->error());
				break;
		}

		alter_table_utf8($db->prefix.'search_words');

		break;


	// Convert subscriptions
	case 'conv_subscriptions':
		$query_str = '?stage=conv_topics&req_old_charset='.$old_charset;

		// By this stage we should have already renamed the subscription table
		alter_table_utf8($db->prefix.'topic_subscriptions');
		alter_table_utf8($db->prefix.'forum_subscriptions'); // This should actually already be utf8, but for consistency...

		break;


	// Convert topics
	case 'conv_topics':
		$query_str = '?stage=conv_users&req_old_charset='.$old_charset;

		function _conv_topics($cur_item, $old_charset)
		{
			global $lang_update;

			echo sprintf($lang_update['Converting item'], $lang_update['topic'], $cur_item['id']).'<br />'."\n";

			convert_to_utf8($cur_item['poster'], $old_charset);
			convert_to_utf8($cur_item['subject'], $old_charset);
			convert_to_utf8($cur_item['last_poster'], $old_charset);

			return $cur_item;
		}

		$end_at = convert_table_utf8($db->prefix.'topics', '_conv_topics', $old_charset, 'id', $start_at);

		if ($end_at !== true)
			$query_str = '?stage=conv_topics&req_old_charset='.$old_charset.'&start_at='.$end_at;

		break;


	// Convert users
	case 'conv_users':
		$query_str = '?stage=preparse_posts';

		if ($start_at == 0)
			$_SESSION['dupe_users'] = array();

		function _conv_users($cur_item, $old_charset)
		{
			global $lang_update;

			echo sprintf($lang_update['Converting item'], $lang_update['user'], $cur_item['id']).'<br />'."\n";

			convert_to_utf8($cur_item['username'], $old_charset);
			convert_to_utf8($cur_item['title'], $old_charset);
			convert_to_utf8($cur_item['realname'], $old_charset);
			convert_to_utf8($cur_item['location'], $old_charset);
			convert_to_utf8($cur_item['signature'], $old_charset);
			convert_to_utf8($cur_item['admin_note'], $old_charset);

			return $cur_item;
		}

		function _error_users($cur_user)
		{
			$_SESSION['dupe_users'][$cur_user['id']] = $cur_user;
		}

		$end_at = convert_table_utf8($db->prefix.'users', '_conv_users', $old_charset, 'id', $start_at, '_error_users');

		if ($end_at !== true)
			$query_str = '?stage=conv_users&req_old_charset='.$old_charset.'&start_at='.$end_at;
		else if (!empty($_SESSION['dupe_users']))
			$query_str = '?stage=conv_users_dupe';

		break;


	// Handle any duplicate users which occured due to conversion
	case 'conv_users_dupe':
		$query_str = '?stage=preparse_posts';

		if (!$mysql || empty($_SESSION['dupe_users']))
			break;

		if (isset($_POST['form_sent']))
		{
			$errors = array();

			require PUN_ROOT.'include/email.php';

			foreach ($_SESSION['dupe_users'] as $id => $cur_user)
			{
				$errors[$id] = array();

				$username = pun_trim($_POST['dupe_users'][$id]);

				if (pun_strlen($username) < 2)
					$errors[$id][] = $lang_update['Username too short error'];
				else if (pun_strlen($username) > 25) // This usually doesn't happen since the form element only accepts 25 characters
					$errors[$id][] = $lang_update['Username too long error'];
				else if (!strcasecmp($username, 'Guest'))
					$errors[$id][] = $lang_update['Username Guest reserved error'];
				else if (preg_match('%[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}%', $username) || preg_match('%((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))%', $username))
					$errors[$id][] = $lang_update['Username IP format error'];
				else if ((strpos($username, '[') !== false || strpos($username, ']') !== false) && strpos($username, '\'') !== false && strpos($username, '"') !== false)
					$errors[$id][] = $lang_update['Username bad characters error'];
				else if (preg_match('%(?:\[/?(?:b|u|s|ins|del|em|i|h|colou?r|quote|code|img|url|email|list|\*)\]|\[(?:img|url|quote|list)=)%i', $username))
					$errors[$id][] = $lang_update['Username BBCode error'];

				$result = $db->query('SELECT username FROM '.$db->prefix.'users WHERE (UPPER(username)=UPPER(\''.$db->escape($username).'\') OR UPPER(username)=UPPER(\''.$db->escape(ucp_preg_replace('%[^\p{L}\p{N}]%u', '', $username)).'\')) AND id>1') or error('Unable to fetch user info', __FILE__, __LINE__, $db->error());

				if ($db->num_rows($result))
				{
					$busy = $db->result($result);
					$errors[$id][] = sprintf($lang_update['Username duplicate error'], pun_htmlspecialchars($busy));
				}

				if (empty($errors[$id]))
				{
					$old_username = $cur_user['username'];
					$_SESSION['dupe_users'][$id]['username'] = $cur_user['username'] = $username;

					$temp = array();
					foreach ($cur_user as $idx => $value)
						$temp[$idx] = is_null($value) ? 'NULL' : '\''.$db->escape($value).'\'';

					// Insert the renamed user
					$db->query('INSERT INTO '.$db->prefix.'users('.implode(',', array_keys($temp)).') VALUES ('.implode(',', array_values($temp)).')') or error('Unable to insert data to new table', __FILE__, __LINE__, $db->error());

					// Renaming a user also affects a bunch of other stuff, lets fix that too...
					$db->query('UPDATE '.$db->prefix.'posts SET poster=\''.$db->escape($username).'\' WHERE poster_id='.$id) or error('Unable to update posts', __FILE__, __LINE__, $db->error());

					// TODO: The following must compare using collation utf8_bin otherwise we will accidently update posts/topics/etc belonging to both of the duplicate users, not just the one we renamed!
					$db->query('UPDATE '.$db->prefix.'posts SET edited_by=\''.$db->escape($username).'\' WHERE edited_by=\''.$db->escape($old_username).'\' COLLATE utf8_bin') or error('Unable to update posts', __FILE__, __LINE__, $db->error());
					$db->query('UPDATE '.$db->prefix.'topics SET poster=\''.$db->escape($username).'\' WHERE poster=\''.$db->escape($old_username).'\' COLLATE utf8_bin') or error('Unable to update topics', __FILE__, __LINE__, $db->error());
					$db->query('UPDATE '.$db->prefix.'topics SET last_poster=\''.$db->escape($username).'\' WHERE last_poster=\''.$db->escape($old_username).'\' COLLATE utf8_bin') or error('Unable to update topics', __FILE__, __LINE__, $db->error());
					$db->query('UPDATE '.$db->prefix.'forums SET last_poster=\''.$db->escape($username).'\' WHERE last_poster=\''.$db->escape($old_username).'\' COLLATE utf8_bin') or error('Unable to update forums', __FILE__, __LINE__, $db->error());
					$db->query('UPDATE '.$db->prefix.'online SET ident=\''.$db->escape($username).'\' WHERE ident=\''.$db->escape($old_username).'\' COLLATE utf8_bin') or error('Unable to update online list', __FILE__, __LINE__, $db->error());

					// If the user is a moderator or an administrator we have to update the moderator lists
					$result = $db->query('SELECT g_moderator FROM '.$db->prefix.'groups WHERE g_id='.$cur_user['group_id']) or error('Unable to fetch group', __FILE__, __LINE__, $db->error());
					$group_mod = $db->result($result);

					if ($cur_user['group_id'] == PUN_ADMIN || $group_mod == '1')
					{
						$result = $db->query('SELECT id, moderators FROM '.$db->prefix.'forums') or error('Unable to fetch forum list', __FILE__, __LINE__, $db->error());

						while ($cur_forum = $db->fetch_assoc($result))
						{
							$cur_moderators = ($cur_forum['moderators'] != '') ? unserialize($cur_forum['moderators']) : array();

							if (in_array($id, $cur_moderators))
							{
								unset($cur_moderators[$old_username]);
								$cur_moderators[$username] = $id;
								uksort($cur_moderators, 'utf8_strcasecmp');

								$db->query('UPDATE '.$db->prefix.'forums SET moderators=\''.$db->escape(serialize($cur_moderators)).'\' WHERE id='.$cur_forum['id']) or error('Unable to update forum', __FILE__, __LINE__, $db->error());
							}
						}
					}

					// Email the user alerting them of the change
					if (file_exists(PUN_ROOT.'lang/'.$cur_user['language'].'/mail_templates/rename.tpl'))
						$mail_tpl = trim(file_get_contents(PUN_ROOT.'lang/'.$cur_user['language'].'/mail_templates/rename.tpl'));
					else if (file_exists(PUN_ROOT.'lang/'.$pun_config['o_default_lang'].'/mail_templates/rename.tpl'))
						$mail_tpl = trim(file_get_contents(PUN_ROOT.'lang/'.$pun_config['o_default_lang'].'/mail_templates/rename.tpl'));
					else
						$mail_tpl = trim(file_get_contents(PUN_ROOT.'lang/English/mail_templates/rename.tpl'));

					// The first row contains the subject
					$first_crlf = strpos($mail_tpl, "\n");
					$mail_subject = trim(substr($mail_tpl, 8, $first_crlf-8));
					$mail_message = trim(substr($mail_tpl, $first_crlf));

					$mail_subject = str_replace('<board_title>', $pun_config['o_board_title'], $mail_subject);
					$mail_message = str_replace('<base_url>', get_base_url().'/', $mail_message);
					$mail_message = str_replace('<old_username>', $old_username, $mail_message);
					$mail_message = str_replace('<new_username>', $username, $mail_message);
					$mail_message = str_replace('<board_mailer>', $pun_config['o_board_title'], $mail_message);

					pun_mail($cur_user['email'], $mail_subject, $mail_message);

					unset($_SESSION['dupe_users'][$id]);
				}
			}
		}

		if (!empty($_SESSION['dupe_users']))
		{
			$query_str = '';

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $lang_common['lang_identifier'] ?>" lang="<?php echo $lang_common['lang_identifier'] ?>" dir="<?php echo $lang_common['lang_direction'] ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo $lang_update['Update'] ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $default_style ?>.css" />
</head>
<body>

<div id="pundb_update" class="pun">
<div class="top-box"><div><!-- Top Corners --></div></div>
<div class="punwrap">

<div class="blockform">
	<h2><span><?php echo $lang_update['Error converting users'] ?></span></h2>
	<div class="box">
		<form method="post" action="db_update.php?stage=conv_users_dupe&amp;uid=<?php echo $uid ?>">
			<input type="hidden" name="form_sent" value="1" />
			<div class="inform">
				<div class="forminfo">
						<p style="font-size: 1.1em"><?php echo $lang_update['Error info 1'] ?></p>
						<p style="font-size: 1.1em"><?php echo $lang_update['Error info 2'] ?></p>
				</div>
			</div>
<?php

			foreach ($_SESSION['dupe_users'] as $id => $cur_user)
			{

?>
			<div class="inform">
				<fieldset>
					<legend><?php echo pun_htmlspecialchars($cur_user['username']); ?></legend>
					<div class="infldset">
						<label class="required"><strong><?php echo $lang_update['New username'] ?> <span><?php echo $lang_update['Required'] ?></span></strong><br /><input type="text" name="<?php echo 'dupe_users['.$id.']'; ?>" value="<?php if (isset($_POST['dupe_users'][$id])) echo pun_htmlspecialchars($_POST['dupe_users'][$id]); ?>" size="25" maxlength="25" /><br /></label>
					</div>
				</fieldset>
<?php if (!empty($errors[$id])): ?>				<div class="forminfo error-info">
					<h3><?php echo $lang_update['Correct errors'] ?></h3>
					<ul class="error-list">
<?php

foreach ($errors[$id] as $cur_error)
	echo "\t\t\t\t\t\t".'<li><strong>'.$cur_error.'</strong></li>'."\n";
?>
					</ul>
				</div>
<?php endif; ?>			</div>
<?php

			}

?>
			<p class="buttons"><input type="submit" name="rename" value="<?php echo $lang_update['Rename users'] ?>" /></p>
		</form>
	</div>
</div>

</div>
<div class="end-box"><div><!-- Bottom Corners --></div></div>
</div>

</body>
</html>
<?php

		}

		break;


	// Preparse posts
	case 'preparse_posts':
		$query_str = '?stage=preparse_sigs';

		// If we don't need to parse the posts, skip this stage
		if (isset($pun_config['o_parser_revision']) && $pun_config['o_parser_revision'] >= UPDATE_TO_PARSER_REVISION)
			break;

		require PUN_ROOT.'include/parser.php';

		// Fetch posts to process this cycle
		$result = $db->query('SELECT id, message FROM '.$db->prefix.'posts WHERE id > '.$start_at.' ORDER BY id ASC LIMIT '.PER_PAGE) or error('Unable to fetch posts', __FILE__, __LINE__, $db->error());

		$temp = array();
		$end_at = 0;
		while ($cur_item = $db->fetch_assoc($result))
		{
			echo sprintf($lang_update['Preparsing item'], $lang_update['post'], $cur_item['id']).'<br />'."\n";
			$db->query('UPDATE '.$db->prefix.'posts SET message = \''.$db->escape(preparse_bbcode($cur_item['message'], $temp)).'\' WHERE id = '.$cur_item['id']) or error('Unable to update post', __FILE__, __LINE__, $db->error());

			$end_at = $cur_item['id'];
		}

		// Check if there is more work to do
		if ($end_at > 0)
		{
			$result = $db->query('SELECT 1 FROM '.$db->prefix.'posts WHERE id > '.$end_at.' ORDER BY id ASC LIMIT 1') or error('Unable to fetch next ID', __FILE__, __LINE__, $db->error());

			if ($db->num_rows($result) > 0)
				$query_str = '?stage=preparse_posts&start_at='.$end_at;
		}

		break;


	// Preparse signatures
	case 'preparse_sigs':
		$query_str = '?stage=rebuild_idx';

		// If we don't need to parse the sigs, skip this stage
		if (isset($pun_config['o_parser_revision']) && $pun_config['o_parser_revision'] >= UPDATE_TO_PARSER_REVISION)
			break;

		require PUN_ROOT.'include/parser.php';

		// Fetch users to process this cycle
		$result = $db->query('SELECT id, signature FROM '.$db->prefix.'users WHERE id > '.$start_at.' ORDER BY id ASC LIMIT '.PER_PAGE) or error('Unable to fetch users', __FILE__, __LINE__, $db->error());

		$temp = array();
		$end_at = 0;
		while ($cur_item = $db->fetch_assoc($result))
		{
			echo sprintf($lang_update['Preparsing item'], $lang_update['signature'], $cur_item['id']).'<br />'."\n";
			$db->query('UPDATE '.$db->prefix.'users SET signature = \''.$db->escape(preparse_bbcode($cur_item['signature'], $temp, true)).'\' WHERE id = '.$cur_item['id']) or error('Unable to update user', __FILE__, __LINE__, $db->error());

			$end_at = $cur_item['id'];
		}

		// Check if there is more work to do
		if ($end_at > 0)
		{
			$result = $db->query('SELECT 1 FROM '.$db->prefix.'users WHERE id > '.$end_at.' ORDER BY id ASC LIMIT 1') or error('Unable to fetch next ID', __FILE__, __LINE__, $db->error());
			if ($db->num_rows($result) > 0)
				$query_str = '?stage=preparse_sigs&start_at='.$end_at;
		}

		break;


	// Rebuild the search index
	case 'rebuild_idx':
		$query_str = '?stage=finish';

		// If we don't need to update the search index, skip this stage
		if (isset($pun_config['o_searchindex_revision']) && $pun_config['o_searchindex_revision'] >= UPDATE_TO_SI_REVISION)
			break;

		if ($start_at == 0)
		{
			// Truncate the tables just in-case we didn't already (if we are coming directly here without converting the tables)
			$db->truncate_table('search_cache') or error('Unable to empty search cache table', __FILE__, __LINE__, $db->error());
			$db->truncate_table('search_matches') or error('Unable to empty search index match table', __FILE__, __LINE__, $db->error());
			$db->truncate_table('search_words') or error('Unable to empty search index words table', __FILE__, __LINE__, $db->error());

			// Reset the sequence for the search words (not needed for SQLite)
			switch ($db_type)
			{
				case 'mysql':
				case 'mysqli':
				case 'mysql_innodb':
				case 'mysqli_innodb':
					$db->query('ALTER TABLE '.$db->prefix.'search_words auto_increment=1') or error('Unable to update table auto_increment', __FILE__, __LINE__, $db->error());
					break;

				case 'pgsql';
					$db->query('SELECT setval(\''.$db->prefix.'search_words_id_seq\', 1, false)') or error('Unable to update sequence', __FILE__, __LINE__, $db->error());
					break;
			}
		}

		require PUN_ROOT.'include/search_idx.php';

		// Fetch posts to process this cycle
		$result = $db->query('SELECT p.id, p.message, t.subject, t.first_post_id FROM '.$db->prefix.'posts AS p INNER JOIN '.$db->prefix.'topics AS t ON t.id=p.topic_id WHERE p.id > '.$start_at.' ORDER BY p.id ASC LIMIT '.PER_PAGE) or error('Unable to fetch posts', __FILE__, __LINE__, $db->error());

		$end_at = 0;
		while ($cur_item = $db->fetch_assoc($result))
		{
			echo sprintf($lang_update['Rebuilding index item'], $lang_update['post'], $cur_item['id']).'<br />'."\n";

			if ($cur_item['id'] == $cur_item['first_post_id'])
				update_search_index('post', $cur_item['id'], $cur_item['message'], $cur_item['subject']);
			else
				update_search_index('post', $cur_item['id'], $cur_item['message']);

			$end_at = $cur_item['id'];
		}

		// Check if there is more work to do
		if ($end_at > 0)
		{
			$result = $db->query('SELECT 1 FROM '.$db->prefix.'posts WHERE id > '.$end_at.' ORDER BY id ASC LIMIT 1') or error('Unable to fetch next ID', __FILE__, __LINE__, $db->error());

			if ($db->num_rows($result) > 0)
				$query_str = '?stage=rebuild_idx&start_at='.$end_at;
		}

		break;


	// Show results page
	case 'finish':
		// We update the version number
		$db->query('UPDATE '.$db->prefix.'config SET conf_value = \''.UPDATE_TO.'\' WHERE conf_name = \'o_cur_version\'') or error('Unable to update version', __FILE__, __LINE__, $db->error());

		// And the database revision number
		$db->query('UPDATE '.$db->prefix.'config SET conf_value = \''.UPDATE_TO_DB_REVISION.'\' WHERE conf_name = \'o_database_revision\'') or error('Unable to update database revision number', __FILE__, __LINE__, $db->error());

		// And the search index revision number
		$db->query('UPDATE '.$db->prefix.'config SET conf_value = \''.UPDATE_TO_SI_REVISION.'\' WHERE conf_name = \'o_searchindex_revision\'') or error('Unable to update search index revision number', __FILE__, __LINE__, $db->error());

		// And the parser revision number
		$db->query('UPDATE '.$db->prefix.'config SET conf_value = \''.UPDATE_TO_PARSER_REVISION.'\' WHERE conf_name = \'o_parser_revision\'') or error('Unable to update parser revision number', __FILE__, __LINE__, $db->error());

		// Check the default language still exists!
		if (!file_exists(PUN_ROOT.'lang/'.$pun_config['o_default_lang'].'/common.php'))
			$db->query('UPDATE '.$db->prefix.'config SET conf_value = \'English\' WHERE conf_name = \'o_default_lang\'') or error('Unable to update default language', __FILE__, __LINE__, $db->error());

		// Check the default style still exists!
		if (!file_exists(PUN_ROOT.'style/'.$pun_config['o_default_style'].'.css'))
			$db->query('UPDATE '.$db->prefix.'config SET conf_value = \'Air\' WHERE conf_name = \'o_default_style\'') or error('Unable to update default style', __FILE__, __LINE__, $db->error());

		// This feels like a good time to synchronize the forums
		$result = $db->query('SELECT id FROM '.$db->prefix.'forums') or error('Unable to fetch forum IDs', __FILE__, __LINE__, $db->error());

		while ($row = $db->fetch_row($result))
			update_forum($row[0]);

		// Empty the PHP cache
		forum_clear_cache();

		// Delete the update lock file
		@unlink(FORUM_CACHE_DIR.'db_update.lock');

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<?php echo $lang_common['lang_identifier'] ?>" lang="<?php echo $lang_common['lang_identifier'] ?>" dir="<?php echo $lang_common['lang_direction'] ?>">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title><?php echo $lang_update['Update'] ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $default_style ?>.css" />
</head>
<body>

<div id="pundb_update" class="pun">
<div class="top-box"><div><!-- Top Corners --></div></div>
<div class="punwrap">

<div class="blockform">
	<h2><span><?php echo $lang_update['Update'] ?></span></h2>
	<div class="box">
		<div class="fakeform">
			<div class="inform">
				<div class="forminfo">
					<p style="font-size: 1.1em"><?php printf($lang_update['Successfully updated'], sprintf('<a href="index.php">%s</a>', $lang_update['go to index'])) ?></p>
				</div>
			</div>
		</div>
	</div>
</div>

</div>
<div class="end-box"><div><!-- Bottom Corners --></div></div>
</div>

</body>
</html>
<?php

		break;
}

$db->end_transaction();
$db->close();

if ($query_str != '')
	exit('<meta http-equiv="refresh" content="0;url=db_update.php'.$query_str.'&uid='.$uid.'" /><hr /><p>'.sprintf($lang_update['Automatic redirect failed'], '<a href="db_update.php'.$query_str.'&uid='.$uid.'">'.$lang_update['Click here'].'</a>').'</p>');