forked from ADOdb/ADOdb
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathadodb-lib.inc.php
1346 lines (1142 loc) · 37.7 KB
/
adodb-lib.inc.php
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
<?php
/**
* Helper functions.
*
* Less commonly used functions are placed here to reduce size of adodb.inc.php.
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
global $ADODB_INCLUDED_LIB;
$ADODB_INCLUDED_LIB = 1;
function adodb_strip_order_by($sql)
{
$rez = preg_match_all('/(\sORDER\s+BY\s(?:[^)](?!LIMIT))*)/is', $sql, $arr);
if ($arr)
{
$tmp = array_pop($arr);
$arr = [1=>array_pop($tmp)];
}
if ($arr)
if (strpos($arr[1], '(') !== false) {
$at = strpos($sql, $arr[1]);
$cntin = 0;
for ($i=$at, $max=strlen($sql); $i < $max; $i++) {
$ch = $sql[$i];
if ($ch == '(') {
$cntin += 1;
} elseif($ch == ')') {
$cntin -= 1;
if ($cntin < 0) {
break;
}
}
}
$sql = substr($sql,0,$at).substr($sql,$i);
} else {
$sql = str_replace($arr[1], '', $sql);
}
return $sql;
}
if (false) {
$sql = 'select * from (select a from b order by a(b),b(c) desc)';
$sql = '(select * from abc order by 1)';
die(adodb_strip_order_by($sql));
}
function adodb_probetypes(&$array,&$types,$probe=8)
{
// probe and guess the type
$types = array();
if ($probe > sizeof($array)) $max = sizeof($array);
else $max = $probe;
for ($j=0;$j < $max; $j++) {
$row = $array[$j];
if (!$row) break;
$i = -1;
foreach($row as $v) {
$i += 1;
if (isset($types[$i]) && $types[$i]=='C') continue;
//print " ($i ".$types[$i]. "$v) ";
$v = trim($v);
if (!preg_match('/^[+-]{0,1}[0-9\.]+$/',$v)) {
$types[$i] = 'C'; // once C, always C
continue;
}
if ($j == 0) {
// If empty string, we presume is character
// test for integer for 1st row only
// after that it is up to testing other rows to prove
// that it is not an integer
if (strlen($v) == 0) $types[$i] = 'C';
if (strpos($v,'.') !== false) $types[$i] = 'N';
else $types[$i] = 'I';
continue;
}
if (strpos($v,'.') !== false) $types[$i] = 'N';
}
}
}
function adodb_transpose(&$arr, &$newarr, &$hdr, &$fobjs)
{
$oldX = sizeof(reset($arr));
$oldY = sizeof($arr);
if ($hdr) {
$startx = 1;
$hdr = array('Fields');
for ($y = 0; $y < $oldY; $y++) {
$hdr[] = $arr[$y][0];
}
} else
$startx = 0;
for ($x = $startx; $x < $oldX; $x++) {
if ($fobjs) {
$o = $fobjs[$x];
$newarr[] = array($o->name);
} else
$newarr[] = array();
for ($y = 0; $y < $oldY; $y++) {
$newarr[$x-$startx][] = $arr[$y][$x];
}
}
}
function _adodb_replace(&$zthis, $table, $fieldArray, $keyCol, $autoQuote, $has_autoinc)
{
// Add Quote around table name to support use of spaces / reserved keywords
$table=sprintf('%s%s%s', $zthis->nameQuote,$table,$zthis->nameQuote);
if (count($fieldArray) == 0) return 0;
if (!is_array($keyCol)) {
$keyCol = array($keyCol);
}
$uSet = '';
foreach($fieldArray as $k => $v) {
if ($v === null) {
$v = 'NULL';
$fieldArray[$k] = $v;
} else if ($autoQuote && /*!is_numeric($v) /*and strncmp($v,"'",1) !== 0 -- sql injection risk*/ strcasecmp($v,$zthis->null2null)!=0) {
$v = $zthis->qstr($v);
$fieldArray[$k] = $v;
}
if (in_array($k,$keyCol)) continue; // skip UPDATE if is key
// Add Quote around column name to support use of spaces / reserved keywords
$uSet .= sprintf(',%s%s%s=%s',$zthis->nameQuote,$k,$zthis->nameQuote,$v);
}
$uSet = ltrim($uSet, ',');
// Add Quote around column name in where clause
$where = '';
foreach ($keyCol as $v) {
if (isset($fieldArray[$v])) {
$where .= sprintf(' and %s%s%s=%s ', $zthis->nameQuote,$v,$zthis->nameQuote,$fieldArray[$v]);
}
}
if ($where) {
$where = substr($where, 5);
}
if ($uSet && $where) {
$update = "UPDATE $table SET $uSet WHERE $where";
$rs = $zthis->Execute($update);
if ($rs) {
if ($zthis->poorAffectedRows) {
// The Select count(*) wipes out any errors that the update would have returned.
// PHPLens Issue No: 5696
if ($zthis->ErrorNo()<>0) return 0;
// affected_rows == 0 if update field values identical to old values
// for mysql - which is silly.
$cnt = $zthis->GetOne("select count(*) from $table where $where");
if ($cnt > 0) return 1; // record already exists
} else {
if (($zthis->Affected_Rows()>0)) return 1;
}
} else
return 0;
}
$iCols = $iVals = '';
foreach($fieldArray as $k => $v) {
if ($has_autoinc && in_array($k,$keyCol)) continue; // skip autoinc col
// Add Quote around Column Name
$iCols .= sprintf(',%s%s%s',$zthis->nameQuote,$k,$zthis->nameQuote);
$iVals .= ",$v";
}
$iCols = ltrim($iCols, ',');
$iVals = ltrim($iVals, ',');
$insert = "INSERT INTO $table ($iCols) VALUES ($iVals)";
$rs = $zthis->Execute($insert);
return ($rs) ? 2 : 0;
}
function _adodb_getmenu(&$zthis, $name,$defstr='',$blank1stItem=true,$multiple=false,
$size=0, $selectAttr='',$compareFields0=true)
{
global $ADODB_FETCH_MODE;
$s = _adodb_getmenu_select($name, $defstr, $blank1stItem, $multiple, $size, $selectAttr);
$hasvalue = $zthis->FieldCount() > 1;
if (!$hasvalue) {
$compareFields0 = true;
}
$value = '';
while(!$zthis->EOF) {
$zval = rtrim(reset($zthis->fields));
if ($blank1stItem && $zval == "") {
$zthis->MoveNext();
continue;
}
if ($hasvalue) {
if ($ADODB_FETCH_MODE == ADODB_FETCH_ASSOC) {
// Get 2nd field's value regardless of its name
$zval2 = current(array_slice($zthis->fields, 1, 1));
} else {
// With NUM or BOTH fetch modes, we have a numeric index
$zval2 = $zthis->fields[1];
}
$zval2 = trim($zval2);
$value = 'value="' . htmlspecialchars($zval2) . '"';
}
$s .= _adodb_getmenu_option($defstr, $compareFields0 ? $zval : $zval2, $value, $zval);
$zthis->MoveNext();
} // while
return $s ."\n</select>\n";
}
function _adodb_getmenu_gp(&$zthis, $name,$defstr='',$blank1stItem=true,$multiple=false,
$size=0, $selectAttr='',$compareFields0=true)
{
global $ADODB_FETCH_MODE;
$s = _adodb_getmenu_select($name, $defstr, $blank1stItem, $multiple, $size, $selectAttr);
$hasvalue = $zthis->FieldCount() > 1;
$hasgroup = $zthis->FieldCount() > 2;
if (!$hasvalue) {
$compareFields0 = true;
}
$value = '';
$optgroup = null;
$firstgroup = true;
while(!$zthis->EOF) {
$zval = rtrim(reset($zthis->fields));
$group = '';
if ($blank1stItem && $zval=="") {
$zthis->MoveNext();
continue;
}
if ($hasvalue) {
if ($ADODB_FETCH_MODE == ADODB_FETCH_ASSOC) {
// Get 2nd field's value regardless of its name
$fields = array_slice($zthis->fields, 1);
$zval2 = current($fields);
if ($hasgroup) {
$group = trim(next($fields));
}
} else {
// With NUM or BOTH fetch modes, we have a numeric index
$zval2 = $zthis->fields[1];
if ($hasgroup) {
$group = trim($zthis->fields[2]);
}
}
$zval2 = trim($zval2);
$value = "value='".htmlspecialchars($zval2)."'";
}
if ($optgroup != $group) {
$optgroup = $group;
if ($firstgroup) {
$firstgroup = false;
} else {
$s .="\n</optgroup>";
}
$s .="\n<optgroup label='". htmlspecialchars($group) ."'>";
}
$s .= _adodb_getmenu_option($defstr, $compareFields0 ? $zval : $zval2, $value, $zval);
$zthis->MoveNext();
} // while
// closing last optgroup
if($optgroup != null) {
$s .= "\n</optgroup>";
}
return $s ."\n</select>\n";
}
/**
* Generate the opening SELECT tag for getmenu functions.
*
* ADOdb internal function, used by _adodb_getmenu() and _adodb_getmenu_gp().
*
* @param string $name
* @param string $defstr
* @param bool $blank1stItem
* @param bool $multiple
* @param int $size
* @param string $selectAttr
*
* @return string HTML
*/
function _adodb_getmenu_select($name, $defstr = '', $blank1stItem = true,
$multiple = false, $size = 0, $selectAttr = '')
{
if ($multiple || is_array($defstr)) {
if ($size == 0 ) {
$size = 5;
}
$attr = ' multiple size="' . $size . '"';
if (!strpos($name,'[]')) {
$name .= '[]';
}
} elseif ($size) {
$attr = ' size="' . $size . '"';
} else {
$attr = '';
}
$html = '<select name="' . $name . '"' . $attr . ' ' . $selectAttr . '>';
if ($blank1stItem) {
if (is_string($blank1stItem)) {
$barr = explode(':',$blank1stItem);
if (sizeof($barr) == 1) {
$barr[] = '';
}
$html .= "\n<option value=\"" . $barr[0] . "\">" . $barr[1] . "</option>";
} else {
$html .= "\n<option></option>";
}
}
return $html;
}
/**
* Print the OPTION tags for getmenu functions.
*
* ADOdb internal function, used by _adodb_getmenu() and _adodb_getmenu_gp().
*
* @param string $defstr Default values
* @param string $compare Value to compare against defaults
* @param string $value Ready-to-print `value="xxx"` (or empty) string
* @param string $display Display value
*
* @return string HTML
*/
function _adodb_getmenu_option($defstr, $compare, $value, $display)
{
if ( is_array($defstr) && in_array($compare, $defstr)
|| !is_array($defstr) && strcasecmp($compare, $defstr) == 0
) {
$selected = ' selected="selected"';
} else {
$selected = '';
}
return "\n<option $value$selected>" . htmlspecialchars($display) . '</option>';
}
/*
Count the number of records this sql statement will return by using
query rewriting heuristics...
Does not work with UNIONs, except with postgresql and oracle.
Usage:
$conn->Connect(...);
$cnt = _adodb_getcount($conn, $sql);
*/
function _adodb_getcount(&$zthis, $sql,$inputarr=false,$secs2cache=0)
{
$qryRecs = 0;
/*
* These databases require a "SELECT * FROM (SELECT" type
* statement to have an alias for the result
*/
$requiresAlias = '';
$requiresAliasArray = array('postgres9','postgres','mysql','mysqli','mssql','mssqlnative','sqlsrv');
if (in_array($zthis->databaseType,$requiresAliasArray)
|| in_array($zthis->dsnType,$requiresAliasArray)
) {
$requiresAlias = '_ADODB_ALIAS_';
}
if (!empty($zthis->_nestedSQL)
|| preg_match("/^\s*SELECT\s+DISTINCT/is", $sql)
|| preg_match('/\s+GROUP\s+BY\s+/is',$sql)
|| preg_match('/\s+UNION\s+/is',$sql)
) {
$rewritesql = adodb_strip_order_by($sql);
// ok, has SELECT DISTINCT or GROUP BY so see if we can use a table alias
// but this is only supported by oracle and postgresql...
if ($zthis->dataProvider == 'oci8') {
// Allow Oracle hints to be used for query optimization, Chris Wrye
if (preg_match('#/\\*+.*?\\*\\/#', $sql, $hint)) {
$rewritesql = "SELECT ".$hint[0]." COUNT(*) FROM (".$rewritesql.")";
} else
$rewritesql = "SELECT COUNT(*) FROM (".$rewritesql.")";
} else {
$rewritesql = "SELECT COUNT(*) FROM ($rewritesql) $requiresAlias";
}
} else {
// Replace 'SELECT ... FROM' with 'SELECT COUNT(*) FROM'
// Parse the query one char at a time starting after the SELECT
// to find the FROM clause's position, ignoring any sub-queries.
$start = stripos($sql, 'SELECT') + 7;
if ($start === false) {
// Not a SELECT statement - probably should trigger an exception here
return 0;
}
$len = strlen($sql);
$numParentheses = 0;
for ($pos = $start; $pos < $len; $pos++) {
switch ($sql[$pos]) {
case '(': $numParentheses++; continue 2;
case ')': $numParentheses--; continue 2;
}
// Ignore whatever is between parentheses (sub-queries)
if ($numParentheses > 0) {
continue;
}
// Exit loop if 'FROM' keyword was found
if (strtoupper(substr($sql, $pos, 4)) == 'FROM') {
break;
}
}
$rewritesql = 'SELECT COUNT(*) ' . substr($sql, $pos);
// fix by alexander zhukov, alex#unipack.ru, because count(*) and 'order by' fails
// with mssql, access and postgresql. Also a good speedup optimization - skips sorting!
// also see PHPLens Issue No: 12752
$rewritesql = adodb_strip_order_by($rewritesql);
}
if (isset($rewritesql) && $rewritesql != $sql) {
if (preg_match('/\sLIMIT\s+[0-9]+/i',$sql,$limitarr)) {
$rewritesql .= $limitarr[0];
}
if ($secs2cache) {
// we only use half the time of secs2cache because the count can quickly
// become inaccurate if new records are added
$qryRecs = $zthis->CacheGetOne($secs2cache/2,$rewritesql,$inputarr);
} else {
$qryRecs = $zthis->GetOne($rewritesql,$inputarr);
}
if ($qryRecs !== false) return $qryRecs;
}
//--------------------------------------------
// query rewrite failed - so try slower way...
// strip off unneeded ORDER BY if no UNION
if (preg_match('/\s*UNION\s*/is', $sql)) {
$rewritesql = $sql;
} else {
$rewritesql = $rewritesql = adodb_strip_order_by($sql);
}
if (preg_match('/\sLIMIT\s+[0-9]+/i',$sql,$limitarr)) {
$rewritesql .= $limitarr[0];
}
if ($secs2cache) {
$rstest = $zthis->CacheExecute($secs2cache,$rewritesql,$inputarr);
if (!$rstest) $rstest = $zthis->CacheExecute($secs2cache,$sql,$inputarr);
} else {
$rstest = $zthis->Execute($rewritesql,$inputarr);
if (!$rstest) $rstest = $zthis->Execute($sql,$inputarr);
}
if ($rstest) {
$qryRecs = $rstest->RecordCount();
if ($qryRecs == -1) {
// some databases will return -1 on MoveLast() - change to MoveNext()
while(!$rstest->EOF) {
$rstest->MoveNext();
}
$qryRecs = $rstest->_currentRow;
}
$rstest->Close();
if ($qryRecs == -1) return 0;
}
return $qryRecs;
}
/*
Code originally from "Cornel G" <[email protected]>
This code might not work with SQL that has UNION in it
Also if you are using CachePageExecute(), there is a strong possibility that
data will get out of synch. use CachePageExecute() only with tables that
rarely change.
*/
function _adodb_pageexecute_all_rows(&$zthis, $sql, $nrows, $page,
$inputarr=false, $secs2cache=0)
{
$atfirstpage = false;
$atlastpage = false;
$lastpageno=1;
// If an invalid nrows is supplied,
// we assume a default value of 10 rows per page
if (!isset($nrows) || $nrows <= 0) $nrows = 10;
$qryRecs = false; //count records for no offset
$qryRecs = _adodb_getcount($zthis,$sql,$inputarr,$secs2cache);
$lastpageno = (int) ceil($qryRecs / $nrows);
$zthis->_maxRecordCount = $qryRecs;
// ***** Here we check whether $page is the last page or
// whether we are trying to retrieve
// a page number greater than the last page number.
if ($page >= $lastpageno) {
$page = $lastpageno;
$atlastpage = true;
}
// If page number <= 1, then we are at the first page
if (empty($page) || $page <= 1) {
$page = 1;
$atfirstpage = true;
}
// We get the data we want
$offset = $nrows * ($page-1);
if ($secs2cache > 0)
$rsreturn = $zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $offset, $inputarr);
else
$rsreturn = $zthis->SelectLimit($sql, $nrows, $offset, $inputarr, $secs2cache);
// Before returning the RecordSet, we set the pagination properties we need
if ($rsreturn) {
$rsreturn->_maxRecordCount = $qryRecs;
$rsreturn->rowsPerPage = $nrows;
$rsreturn->AbsolutePage($page);
$rsreturn->AtFirstPage($atfirstpage);
$rsreturn->AtLastPage($atlastpage);
$rsreturn->LastPageNo($lastpageno);
}
return $rsreturn;
}
// Iván Oliva version
function _adodb_pageexecute_no_last_page(&$zthis, $sql, $nrows, $page, $inputarr=false, $secs2cache=0)
{
$atfirstpage = false;
$atlastpage = false;
if (!isset($page) || $page <= 1) {
// If page number <= 1, then we are at the first page
$page = 1;
$atfirstpage = true;
}
if ($nrows <= 0) {
// If an invalid nrows is supplied, we assume a default value of 10 rows per page
$nrows = 10;
}
$pagecounteroffset = ($page * $nrows) - $nrows;
// To find out if there are more pages of rows, simply increase the limit or
// nrows by 1 and see if that number of records was returned. If it was,
// then we know there is at least one more page left, otherwise we are on
// the last page. Therefore allow non-Count() paging with single queries
// rather than three queries as was done before.
$test_nrows = $nrows + 1;
if ($secs2cache > 0) {
$rsreturn = $zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $pagecounteroffset, $inputarr);
} else {
$rsreturn = $zthis->SelectLimit($sql, $test_nrows, $pagecounteroffset, $inputarr, $secs2cache);
}
// Now check to see if the number of rows returned was the higher value we asked for or not.
if ( $rsreturn->_numOfRows == $test_nrows ) {
// Still at least 1 more row, so we are not on last page yet...
// Remove the last row from the RS.
$rsreturn->_numOfRows = ( $rsreturn->_numOfRows - 1 );
} elseif ( $rsreturn->_numOfRows == 0 && $page > 1 ) {
// Likely requested a page that doesn't exist, so need to find the last
// page and return it. Revert to original method and loop through pages
// until we find some data...
$pagecounter = $page + 1;
$pagecounteroffset = ($pagecounter * $nrows) - $nrows;
$rstest = $rsreturn;
if ($rstest) {
while ($rstest && $rstest->EOF && $pagecounter > 0) {
$atlastpage = true;
$pagecounter--;
$pagecounteroffset = $nrows * ($pagecounter - 1);
$rstest->Close();
if ($secs2cache>0) {
$rstest = $zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $pagecounteroffset, $inputarr);
}
else {
$rstest = $zthis->SelectLimit($sql, $nrows, $pagecounteroffset, $inputarr, $secs2cache);
}
}
if ($rstest) $rstest->Close();
}
if ($atlastpage) {
// If we are at the last page or beyond it, we are going to retrieve it
$page = $pagecounter;
if ($page == 1) {
// We have to do this again in case the last page is the same as
// the first page, that is, the recordset has only 1 page.
$atfirstpage = true;
}
}
// We get the data we want
$offset = $nrows * ($page-1);
if ($secs2cache > 0) {
$rsreturn = $zthis->CacheSelectLimit($secs2cache, $sql, $nrows, $offset, $inputarr);
}
else {
$rsreturn = $zthis->SelectLimit($sql, $nrows, $offset, $inputarr, $secs2cache);
}
} elseif ( $rsreturn->_numOfRows < $test_nrows ) {
// Rows is less than what we asked for, so must be at the last page.
$atlastpage = true;
}
// Before returning the RecordSet, we set the pagination properties we need
if ($rsreturn) {
$rsreturn->rowsPerPage = $nrows;
$rsreturn->AbsolutePage($page);
$rsreturn->AtFirstPage($atfirstpage);
$rsreturn->AtLastPage($atlastpage);
}
return $rsreturn;
}
/**
* Performs case conversion and quoting of the given field name.
*
* See Global variable $ADODB_QUOTE_FIELDNAMES.
*
* @param ADOConnection $zthis
* @param string $fieldName
*
* @return string Quoted field name
*/
function _adodb_quote_fieldname($zthis, $fieldName)
{
global $ADODB_QUOTE_FIELDNAMES;
// Case conversion - defaults to UPPER
$case = is_bool($ADODB_QUOTE_FIELDNAMES) ? 'UPPER' : $ADODB_QUOTE_FIELDNAMES;
switch ($case) {
case 'LOWER':
$fieldName = strtolower($fieldName);
break;
case 'NATIVE':
// Do nothing
break;
case 'UPPER':
case 'BRACKETS':
default:
$fieldName = strtoupper($fieldName);
break;
}
// Quote field if requested, or necessary (field contains space)
if ($ADODB_QUOTE_FIELDNAMES || strpos($fieldName, ' ') !== false ) {
if ($ADODB_QUOTE_FIELDNAMES === 'BRACKETS') {
return $zthis->leftBracket . $fieldName . $zthis->rightBracket;
} else {
return $zthis->nameQuote . $fieldName . $zthis->nameQuote;
}
} else {
return $fieldName;
}
}
function _adodb_getupdatesql(&$zthis, &$rs, $arrFields, $forceUpdate=false, $force=2)
{
if (!$rs) {
printf(ADODB_BAD_RS,'GetUpdateSQL');
return false;
}
$fieldUpdatedCount = 0;
if (is_array($arrFields))
$arrFields = array_change_key_case($arrFields,CASE_UPPER);
$hasnumeric = isset($rs->fields[0]);
$setFields = '';
// Loop through all of the fields in the recordset
for ($i=0, $max=$rs->fieldCount(); $i < $max; $i++) {
// Get the field from the recordset
$field = $rs->fetchField($i);
// If the recordset field is one
// of the fields passed in then process.
$upperfname = strtoupper($field->name);
if (adodb_key_exists($upperfname, $arrFields, $force)) {
// If the existing field value in the recordset
// is different from the value passed in then
// go ahead and append the field name and new value to
// the update query.
if ($hasnumeric) $val = $rs->fields[$i];
else if (isset($rs->fields[$upperfname])) $val = $rs->fields[$upperfname];
else if (isset($rs->fields[$field->name])) $val = $rs->fields[$field->name];
else if (isset($rs->fields[strtolower($upperfname)])) $val = $rs->fields[strtolower($upperfname)];
else $val = '';
if ($forceUpdate || strcmp($val, $arrFields[$upperfname])) {
// Set the counter for the number of fields that will be updated.
$fieldUpdatedCount++;
// Based on the datatype of the field
// Format the value properly for the database
$type = $rs->metaType($field->type);
if ($type == 'null') {
$type = 'C';
}
$fnameq = _adodb_quote_fieldname($zthis, $field->name);
//********************************************************//
if (is_null($arrFields[$upperfname])
|| (empty($arrFields[$upperfname]) && strlen($arrFields[$upperfname]) == 0)
|| $arrFields[$upperfname] === $zthis->null2null
) {
switch ($force) {
//case 0:
// // Ignore empty values. This is already handled in "adodb_key_exists" function.
// break;
case 1:
// set null
$setFields .= $fnameq . " = null, ";
break;
case 2:
// set empty
$arrFields[$upperfname] = "";
$setFields .= _adodb_column_sql($zthis, 'U', $type, $upperfname, $fnameq, $arrFields);
break;
default:
case 3:
// set the value that was given in array, so you can give both null and empty values
if (is_null($arrFields[$upperfname]) || $arrFields[$upperfname] === $zthis->null2null) {
$setFields .= $fnameq . " = null, ";
} else {
$setFields .= _adodb_column_sql($zthis, 'U', $type, $upperfname, $fnameq, $arrFields);
}
break;
case ADODB_FORCE_NULL_AND_ZERO:
switch ($type) {
case 'N':
case 'I':
case 'L':
$setFields .= $fnameq . ' = 0, ';
break;
default:
$setFields .= $fnameq . ' = null, ';
break;
}
break;
}
//********************************************************//
} else {
// we do this so each driver can customize the sql for
// DB specific column types.
// Oracle needs BLOB types to be handled with a returning clause
// postgres has special needs as well
$setFields .= _adodb_column_sql($zthis, 'U', $type, $upperfname, $fnameq, $arrFields);
}
}
}
}
// If there were any modified fields then build the rest of the update query.
if ($fieldUpdatedCount > 0 || $forceUpdate) {
// Get the table name from the existing query.
if (!empty($rs->tableName)) {
$tableName = $rs->tableName;
} else {
preg_match("/FROM\s+".ADODB_TABLE_REGEX."/is", $rs->sql, $tableName);
$tableName = $tableName[1];
}
// Get the full where clause excluding the word "WHERE" from the existing query.
preg_match('/\sWHERE\s(.*)/is', $rs->sql, $whereClause);
$discard = false;
// not a good hack, improvements?
if ($whereClause) {
#var_dump($whereClause);
if (preg_match('/\s(ORDER\s.*)/is', $whereClause[1], $discard));
else if (preg_match('/\s(LIMIT\s.*)/is', $whereClause[1], $discard));
else if (preg_match('/\s(FOR UPDATE.*)/is', $whereClause[1], $discard));
else preg_match('/\s.*(\) WHERE .*)/is', $whereClause[1], $discard); # see https://sourceforge.net/p/adodb/bugs/37/
} else {
$whereClause = array(false, false);
}
if ($discard) {
$whereClause[1] = substr($whereClause[1], 0, strlen($whereClause[1]) - strlen($discard[1]));
}
$sql = 'UPDATE '.$tableName.' SET '.substr($setFields, 0, -2);
if (strlen($whereClause[1]) > 0) {
$sql .= ' WHERE '.$whereClause[1];
}
return $sql;
} else {
return false;
}
}
function adodb_key_exists($key, &$arr,$force=2)
{
if ($force<=0) {
// the following is the old behaviour where null or empty fields are ignored
return (!empty($arr[$key])) || (isset($arr[$key]) && strlen($arr[$key])>0);
}
if (isset($arr[$key]))
return true;
## null check below
return array_key_exists($key,$arr);
}
/**
* There is a special case of this function for the oci8 driver.
* The proper way to handle an insert w/ a blob in oracle requires
* a returning clause with bind variables and a descriptor blob.
*
*
*/
function _adodb_getinsertsql(&$zthis, &$rs, $arrFields, $force=2)
{
static $cacheRS = false;
static $cacheSig = 0;
static $cacheCols;
$tableName = '';
$values = '';
$fields = '';
$recordSet = null;
if (is_array($arrFields))
$arrFields = array_change_key_case($arrFields,CASE_UPPER);
$fieldInsertedCount = 0;
if (is_string($rs)) {
//ok we have a table name
//try and get the column info ourself.
$tableName = $rs;
//we need an object for the recordSet
//because we have to call MetaType.
//php can't do a $rsclass::MetaType()
$rsclass = $zthis->rsPrefix.$zthis->databaseType;
$recordSet = new $rsclass(-1,$zthis->fetchMode);
$recordSet->connection = $zthis;
if (is_string($cacheRS) && $cacheRS == $rs) {
$columns = $cacheCols;
} else {
$columns = $zthis->MetaColumns( $tableName );
$cacheRS = $tableName;
$cacheCols = $columns;
}
} else if (is_subclass_of($rs, 'adorecordset')) {
if (isset($rs->insertSig) && is_integer($cacheRS) && $cacheRS == $rs->insertSig) {
$columns = $cacheCols;
} else {
for ($i=0, $max=$rs->FieldCount(); $i < $max; $i++)
$columns[] = $rs->FetchField($i);
$cacheRS = $cacheSig;
$cacheCols = $columns;
$rs->insertSig = $cacheSig++;
}
$recordSet = $rs;
} else {
printf(ADODB_BAD_RS,'GetInsertSQL');
return false;
}
// Loop through all of the fields in the recordset
foreach( $columns as $field ) {
$upperfname = strtoupper($field->name);
if (adodb_key_exists($upperfname,$arrFields,$force)) {
$bad = false;
$fnameq = _adodb_quote_fieldname($zthis, $field->name);
$type = $recordSet->MetaType($field->type);
/********************************************************/
if (is_null($arrFields[$upperfname])
|| (empty($arrFields[$upperfname]) && strlen($arrFields[$upperfname]) == 0)
|| $arrFields[$upperfname] === $zthis->null2null
)
{
switch ($force) {
case ADODB_FORCE_IGNORE: // we must always set null if missing
$bad = true;
break;
case ADODB_FORCE_NULL:
$values .= "null, ";
break;
case ADODB_FORCE_EMPTY:
//Set empty
$arrFields[$upperfname] = "";
$values .= _adodb_column_sql($zthis, 'I', $type, $upperfname, $fnameq, $arrFields);
break;
default:
case ADODB_FORCE_VALUE:
//Set the value that was given in array, so you can give both null and empty values
if (is_null($arrFields[$upperfname]) || $arrFields[$upperfname] === $zthis->null2null) {
$values .= "null, ";
} else {
$values .= _adodb_column_sql($zthis, 'I', $type, $upperfname, $fnameq, $arrFields);
}
break;
case ADODB_FORCE_NULL_AND_ZERO:
switch ($type)
{
case 'N':
case 'I':
case 'L':
$values .= '0, ';
break;
default:
$values .= "null, ";
break;
}
break;
} // switch
/*********************************************************/
} else {
//we do this so each driver can customize the sql for
//DB specific column types.
//Oracle needs BLOB types to be handled with a returning clause
//postgres has special needs as well
$values .= _adodb_column_sql($zthis, 'I', $type, $upperfname, $fnameq, $arrFields);
}