This repository has been archived by the owner on Jun 21, 2019. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
adodb-time.inc.php
1458 lines (1195 loc) · 41.9 KB
/
adodb-time.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
/**
ADOdb Date Library, part of the ADOdb abstraction library
Download: http://phplens.com/phpeverywhere/
PHP native date functions use integer timestamps for computations.
Because of this, dates are restricted to the years 1901-2038 on Unix
and 1970-2038 on Windows due to integer overflow for dates beyond
those years. This library overcomes these limitations by replacing the
native function's signed integers (normally 32-bits) with PHP floating
point numbers (normally 64-bits).
Dates from 100 A.D. to 3000 A.D. and later
have been tested. The minimum is 100 A.D. as <100 will invoke the
2 => 4 digit year conversion. The maximum is billions of years in the
future, but this is a theoretical limit as the computation of that year
would take too long with the current implementation of adodb_mktime().
This library replaces native functions as follows:
<pre>
getdate() with adodb_getdate()
date() with adodb_date()
gmdate() with adodb_gmdate()
mktime() with adodb_mktime()
gmmktime() with adodb_gmmktime()
strftime() with adodb_strftime()
strftime() with adodb_gmstrftime()
</pre>
The parameters are identical, except that adodb_date() accepts a subset
of date()'s field formats. Mktime() will convert from local time to GMT,
and date() will convert from GMT to local time, but daylight savings is
not handled currently.
This library is independant of the rest of ADOdb, and can be used
as standalone code.
PERFORMANCE
For high speed, this library uses the native date functions where
possible, and only switches to PHP code when the dates fall outside
the 32-bit signed integer range.
GREGORIAN CORRECTION
Pope Gregory shortened October of A.D. 1582 by ten days. Thursday,
October 4, 1582 (Julian) was followed immediately by Friday, October 15,
1582 (Gregorian).
Since 0.06, we handle this correctly, so:
adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582)
== 24 * 3600 (1 day)
=============================================================================
COPYRIGHT
(c) 2003-2014 John Lim and released under BSD-style license except for code by
jackbbs, which includes adodb_mktime, adodb_get_gmt_diff, adodb_is_leap_year
and originally found at http://www.php.net/manual/en/function.mktime.php
=============================================================================
BUG REPORTS
These should be posted to the ADOdb forums at
http://phplens.com/lens/lensforum/topics.php?id=4
=============================================================================
FUNCTION DESCRIPTIONS
** FUNCTION adodb_time()
Returns the current time measured in the number of seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) as an unsigned integer.
** FUNCTION adodb_getdate($date=false)
Returns an array containing date information, as getdate(), but supports
dates greater than 1901 to 2038. The local date/time format is derived from a
heuristic the first time adodb_getdate is called.
** FUNCTION adodb_date($fmt, $timestamp = false)
Convert a timestamp to a formatted local date. If $timestamp is not defined, the
current timestamp is used. Unlike the function date(), it supports dates
outside the 1901 to 2038 range.
The format fields that adodb_date supports:
<pre>
a - "am" or "pm"
A - "AM" or "PM"
d - day of the month, 2 digits with leading zeros; i.e. "01" to "31"
D - day of the week, textual, 3 letters; e.g. "Fri"
F - month, textual, long; e.g. "January"
g - hour, 12-hour format without leading zeros; i.e. "1" to "12"
G - hour, 24-hour format without leading zeros; i.e. "0" to "23"
h - hour, 12-hour format; i.e. "01" to "12"
H - hour, 24-hour format; i.e. "00" to "23"
i - minutes; i.e. "00" to "59"
j - day of the month without leading zeros; i.e. "1" to "31"
l (lowercase 'L') - day of the week, textual, long; e.g. "Friday"
L - boolean for whether it is a leap year; i.e. "0" or "1"
m - month; i.e. "01" to "12"
M - month, textual, 3 letters; e.g. "Jan"
n - month without leading zeros; i.e. "1" to "12"
O - Difference to Greenwich time in hours; e.g. "+0200"
Q - Quarter, as in 1, 2, 3, 4
r - RFC 2822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200"
s - seconds; i.e. "00" to "59"
S - English ordinal suffix for the day of the month, 2 characters;
i.e. "st", "nd", "rd" or "th"
t - number of days in the given month; i.e. "28" to "31"
T - Timezone setting of this machine; e.g. "EST" or "MDT"
U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)
w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday)
Y - year, 4 digits; e.g. "1999"
y - year, 2 digits; e.g. "99"
z - day of the year; i.e. "0" to "365"
Z - timezone offset in seconds (i.e. "-43200" to "43200").
The offset for timezones west of UTC is always negative,
and for those east of UTC is always positive.
</pre>
Unsupported:
<pre>
B - Swatch Internet time
I (capital i) - "1" if Daylight Savings Time, "0" otherwise.
W - ISO-8601 week number of year, weeks starting on Monday
</pre>
** FUNCTION adodb_date2($fmt, $isoDateString = false)
Same as adodb_date, but 2nd parameter accepts iso date, eg.
adodb_date2('d-M-Y H:i','2003-12-25 13:01:34');
** FUNCTION adodb_gmdate($fmt, $timestamp = false)
Convert a timestamp to a formatted GMT date. If $timestamp is not defined, the
current timestamp is used. Unlike the function date(), it supports dates
outside the 1901 to 2038 range.
** FUNCTION adodb_mktime($hr, $min, $sec[, $month, $day, $year])
Converts a local date to a unix timestamp. Unlike the function mktime(), it supports
dates outside the 1901 to 2038 range. All parameters are optional.
** FUNCTION adodb_gmmktime($hr, $min, $sec [, $month, $day, $year])
Converts a gmt date to a unix timestamp. Unlike the function gmmktime(), it supports
dates outside the 1901 to 2038 range. Differs from gmmktime() in that all parameters
are currently compulsory.
** FUNCTION adodb_gmstrftime($fmt, $timestamp = false)
Convert a timestamp to a formatted GMT date.
** FUNCTION adodb_strftime($fmt, $timestamp = false)
Convert a timestamp to a formatted local date. Internally converts $fmt into
adodb_date format, then echo result.
For best results, you can define the local date format yourself. Define a global
variable $ADODB_DATE_LOCALE which is an array, 1st element is date format using
adodb_date syntax, and 2nd element is the time format, also in adodb_date syntax.
eg. $ADODB_DATE_LOCALE = array('d/m/Y','H:i:s');
Supported format codes:
<pre>
%a - abbreviated weekday name according to the current locale
%A - full weekday name according to the current locale
%b - abbreviated month name according to the current locale
%B - full month name according to the current locale
%c - preferred date and time representation for the current locale
%d - day of the month as a decimal number (range 01 to 31)
%D - same as %m/%d/%y
%e - day of the month as a decimal number, a single digit is preceded by a space (range ' 1' to '31')
%h - same as %b
%H - hour as a decimal number using a 24-hour clock (range 00 to 23)
%I - hour as a decimal number using a 12-hour clock (range 01 to 12)
%m - month as a decimal number (range 01 to 12)
%M - minute as a decimal number
%n - newline character
%p - either `am' or `pm' according to the given time value, or the corresponding strings for the current locale
%r - time in a.m. and p.m. notation
%R - time in 24 hour notation
%S - second as a decimal number
%t - tab character
%T - current time, equal to %H:%M:%S
%x - preferred date representation for the current locale without the time
%X - preferred time representation for the current locale without the date
%y - year as a decimal number without a century (range 00 to 99)
%Y - year as a decimal number including the century
%Z - time zone or name or abbreviation
%% - a literal `%' character
</pre>
Unsupported codes:
<pre>
%C - century number (the year divided by 100 and truncated to an integer, range 00 to 99)
%g - like %G, but without the century.
%G - The 4-digit year corresponding to the ISO week number (see %V).
This has the same format and value as %Y, except that if the ISO week number belongs
to the previous or next year, that year is used instead.
%j - day of the year as a decimal number (range 001 to 366)
%u - weekday as a decimal number [1,7], with 1 representing Monday
%U - week number of the current year as a decimal number, starting
with the first Sunday as the first day of the first week
%V - The ISO 8601:1988 week number of the current year as a decimal number,
range 01 to 53, where week 1 is the first week that has at least 4 days in the
current year, and with Monday as the first day of the week. (Use %G or %g for
the year component that corresponds to the week number for the specified timestamp.)
%w - day of the week as a decimal, Sunday being 0
%W - week number of the current year as a decimal number, starting with the
first Monday as the first day of the first week
</pre>
=============================================================================
NOTES
Useful url for generating test timestamps:
http://www.4webhelp.net/us/timestamp.php
Possible future optimizations include
a. Using an algorithm similar to Plauger's in "The Standard C Library"
(page 428, xttotm.c _Ttotm() function). Plauger's algorithm will not
work outside 32-bit signed range, so i decided not to implement it.
b. Implement daylight savings, which looks awfully complicated, see
http://webexhibits.org/daylightsaving/
CHANGELOG
- 16 Jan 2011 0.36
Added adodb_time() which returns current time. If > 2038, will return as float
- 7 Feb 2011 0.35
Changed adodb_date to be symmetric with adodb_mktime. See $jan1_71. fix for bc.
- 13 July 2010 0.34
Changed adodb_get_gm_diff to use DateTimeZone().
- 11 Feb 2008 0.33
* Bug in 0.32 fix for hour handling. Fixed.
- 1 Feb 2008 0.32
* Now adodb_mktime(0,0,0,12+$m,20,2040) works properly.
- 10 Jan 2008 0.31
* Now adodb_mktime(0,0,0,24,1,2037) works correctly.
- 15 July 2007 0.30
Added PHP 5.2.0 compatability fixes.
* gmtime behaviour for 1970 has changed. We use the actual date if it is between 1970 to 2038 to get the
* timezone, otherwise we use the current year as the baseline to retrieve the timezone.
* Also the timezone's in php 5.2.* support historical data better, eg. if timezone today was +8, but
in 1970 it was +7:30, then php 5.2 return +7:30, while this library will use +8.
*
- 19 March 2006 0.24
Changed strftime() locale detection, because some locales prepend the day of week to the date when %c is used.
- 10 Feb 2006 0.23
PHP5 compat: when we detect PHP5, the RFC2822 format for gmt 0000hrs is changed from -0000 to +0000.
In PHP4, we will still use -0000 for 100% compat with PHP4.
- 08 Sept 2005 0.22
In adodb_date2(), $is_gmt not supported properly. Fixed.
- 18 July 2005 0.21
In PHP 4.3.11, the 'r' format has changed. Leading 0 in day is added. Changed for compat.
Added support for negative months in adodb_mktime().
- 24 Feb 2005 0.20
Added limited strftime/gmstrftime support. x10 improvement in performance of adodb_date().
- 21 Dec 2004 0.17
In adodb_getdate(), the timestamp was accidentally converted to gmt when $is_gmt is false.
Also adodb_mktime(0,0,0) did not work properly. Both fixed thx Mauro.
- 17 Nov 2004 0.16
Removed intval typecast in adodb_mktime() for secs, allowing:
adodb_mktime(0,0,0 + 2236672153,1,1,1934);
Suggested by Ryan.
- 18 July 2004 0.15
All params in adodb_mktime were formerly compulsory. Now only the hour, min, secs is compulsory.
This brings it more in line with mktime (still not identical).
- 23 June 2004 0.14
Allow you to define your own daylights savings function, adodb_daylight_sv.
If the function is defined (somewhere in an include), then you can correct for daylights savings.
In this example, we apply daylights savings in June or July, adding one hour. This is extremely
unrealistic as it does not take into account time-zone, geographic location, current year.
function adodb_daylight_sv(&$arr, $is_gmt)
{
if ($is_gmt) return;
$m = $arr['mon'];
if ($m == 6 || $m == 7) $arr['hours'] += 1;
}
This is only called by adodb_date() and not by adodb_mktime().
The format of $arr is
Array (
[seconds] => 0
[minutes] => 0
[hours] => 0
[mday] => 1 # day of month, eg 1st day of the month
[mon] => 2 # month (eg. Feb)
[year] => 2102
[yday] => 31 # days in current year
[leap] => # true if leap year
[ndays] => 28 # no of days in current month
)
- 28 Apr 2004 0.13
Fixed adodb_date to properly support $is_gmt. Thx to Dimitar Angelov.
- 20 Mar 2004 0.12
Fixed month calculation error in adodb_date. 2102-June-01 appeared as 2102-May-32.
- 26 Oct 2003 0.11
Because of daylight savings problems (some systems apply daylight savings to
January!!!), changed adodb_get_gmt_diff() to ignore daylight savings.
- 9 Aug 2003 0.10
Fixed bug with dates after 2038.
See http://phplens.com/lens/lensforum/msgs.php?id=6980
- 1 July 2003 0.09
Added support for Q (Quarter).
Added adodb_date2(), which accepts ISO date in 2nd param
- 3 March 2003 0.08
Added support for 'S' adodb_date() format char. Added constant ADODB_ALLOW_NEGATIVE_TS
if you want PHP to handle negative timestamps between 1901 to 1969.
- 27 Feb 2003 0.07
All negative numbers handled by adodb now because of RH 7.3+ problems.
See http://bugs.php.net/bug.php?id=20048&edit=2
- 4 Feb 2003 0.06
Fixed a typo, 1852 changed to 1582! This means that pre-1852 dates
are now correctly handled.
- 29 Jan 2003 0.05
Leap year checking differs under Julian calendar (pre 1582). Also
leap year code optimized by checking for most common case first.
We also handle month overflow correctly in mktime (eg month set to 13).
Day overflow for less than one month's days is supported.
- 28 Jan 2003 0.04
Gregorian correction handled. In PHP5, we might throw an error if
mktime uses invalid dates around 5-14 Oct 1582. Released with ADOdb 3.10.
Added limbo 5-14 Oct 1582 check, when we set to 15 Oct 1582.
- 27 Jan 2003 0.03
Fixed some more month problems due to gmt issues. Added constant ADODB_DATE_VERSION.
Fixed calculation of days since start of year for <1970.
- 27 Jan 2003 0.02
Changed _adodb_getdate() to inline leap year checking for better performance.
Fixed problem with time-zones west of GMT +0000.
- 24 Jan 2003 0.01
First implementation.
*/
/* Initialization */
/*
Version Number
*/
define('ADODB_DATE_VERSION',0.35);
$ADODB_DATETIME_CLASS = (PHP_VERSION >= 5.2);
/*
This code was originally for windows. But apparently this problem happens
also with Linux, RH 7.3 and later!
glibc-2.2.5-34 and greater has been changed to return -1 for dates <
1970. This used to work. The problem exists with RedHat 7.3 and 8.0
echo (mktime(0, 0, 0, 1, 1, 1960)); // prints -1
References:
http://bugs.php.net/bug.php?id=20048&edit=2
http://lists.debian.org/debian-glibc/2002/debian-glibc-200205/msg00010.html
*/
if (!defined('ADODB_ALLOW_NEGATIVE_TS')) define('ADODB_NO_NEGATIVE_TS',1);
function adodb_date_test_date($y1,$m,$d=13)
{
$h = round(rand()% 24);
$t = adodb_mktime($h,0,0,$m,$d,$y1);
$rez = adodb_date('Y-n-j H:i:s',$t);
if ($h == 0) $h = '00';
else if ($h < 10) $h = '0'.$h;
if ("$y1-$m-$d $h:00:00" != $rez) {
print "<b>$y1 error, expected=$y1-$m-$d $h:00:00, adodb=$rez</b><br>";
return false;
}
return true;
}
function adodb_date_test_strftime($fmt)
{
$s1 = strftime($fmt);
$s2 = adodb_strftime($fmt);
if ($s1 == $s2) return true;
echo "error for $fmt, strftime=$s1, adodb=$s2<br>";
return false;
}
/**
Test Suite
*/
function adodb_date_test()
{
for ($m=-24; $m<=24; $m++)
echo "$m :",adodb_date('d-m-Y',adodb_mktime(0,0,0,1+$m,20,2040)),"<br>";
error_reporting(E_ALL);
print "<h4>Testing adodb_date and adodb_mktime. version=".ADODB_DATE_VERSION.' PHP='.PHP_VERSION."</h4>";
@set_time_limit(0);
$fail = false;
// This flag disables calling of PHP native functions, so we can properly test the code
if (!defined('ADODB_TEST_DATES')) define('ADODB_TEST_DATES',1);
$t = time();
$fmt = 'Y-m-d H:i:s';
echo '<pre>';
echo 'adodb: ',adodb_date($fmt,$t),'<br>';
echo 'php : ',date($fmt,$t),'<br>';
echo '</pre>';
adodb_date_test_strftime('%Y %m %x %X');
adodb_date_test_strftime("%A %d %B %Y");
adodb_date_test_strftime("%H %M S");
$t = adodb_mktime(0,0,0);
if (!(adodb_date('Y-m-d') == date('Y-m-d'))) print 'Error in '.adodb_mktime(0,0,0).'<br>';
$t = adodb_mktime(0,0,0,6,1,2102);
if (!(adodb_date('Y-m-d',$t) == '2102-06-01')) print 'Error in '.adodb_date('Y-m-d',$t).'<br>';
$t = adodb_mktime(0,0,0,2,1,2102);
if (!(adodb_date('Y-m-d',$t) == '2102-02-01')) print 'Error in '.adodb_date('Y-m-d',$t).'<br>';
print "<p>Testing gregorian <=> julian conversion<p>";
$t = adodb_mktime(0,0,0,10,11,1492);
//http://www.holidayorigins.com/html/columbus_day.html - Friday check
if (!(adodb_date('D Y-m-d',$t) == 'Fri 1492-10-11')) print 'Error in Columbus landing<br>';
$t = adodb_mktime(0,0,0,2,29,1500);
if (!(adodb_date('Y-m-d',$t) == '1500-02-29')) print 'Error in julian leap years<br>';
$t = adodb_mktime(0,0,0,2,29,1700);
if (!(adodb_date('Y-m-d',$t) == '1700-03-01')) print 'Error in gregorian leap years<br>';
print adodb_mktime(0,0,0,10,4,1582).' ';
print adodb_mktime(0,0,0,10,15,1582);
$diff = (adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582));
if ($diff != 3600*24) print " <b>Error in gregorian correction = ".($diff/3600/24)." days </b><br>";
print " 15 Oct 1582, Fri=".(adodb_dow(1582,10,15) == 5 ? 'Fri' : '<b>Error</b>')."<br>";
print " 4 Oct 1582, Thu=".(adodb_dow(1582,10,4) == 4 ? 'Thu' : '<b>Error</b>')."<br>";
print "<p>Testing overflow<p>";
$t = adodb_mktime(0,0,0,3,33,1965);
if (!(adodb_date('Y-m-d',$t) == '1965-04-02')) print 'Error in day overflow 1 <br>';
$t = adodb_mktime(0,0,0,4,33,1971);
if (!(adodb_date('Y-m-d',$t) == '1971-05-03')) print 'Error in day overflow 2 <br>';
$t = adodb_mktime(0,0,0,1,60,1965);
if (!(adodb_date('Y-m-d',$t) == '1965-03-01')) print 'Error in day overflow 3 '.adodb_date('Y-m-d',$t).' <br>';
$t = adodb_mktime(0,0,0,12,32,1965);
if (!(adodb_date('Y-m-d',$t) == '1966-01-01')) print 'Error in day overflow 4 '.adodb_date('Y-m-d',$t).' <br>';
$t = adodb_mktime(0,0,0,12,63,1965);
if (!(adodb_date('Y-m-d',$t) == '1966-02-01')) print 'Error in day overflow 5 '.adodb_date('Y-m-d',$t).' <br>';
$t = adodb_mktime(0,0,0,13,3,1965);
if (!(adodb_date('Y-m-d',$t) == '1966-01-03')) print 'Error in mth overflow 1 <br>';
print "Testing 2-digit => 4-digit year conversion<p>";
if (adodb_year_digit_check(00) != 2000) print "Err 2-digit 2000<br>";
if (adodb_year_digit_check(10) != 2010) print "Err 2-digit 2010<br>";
if (adodb_year_digit_check(20) != 2020) print "Err 2-digit 2020<br>";
if (adodb_year_digit_check(30) != 2030) print "Err 2-digit 2030<br>";
if (adodb_year_digit_check(40) != 1940) print "Err 2-digit 1940<br>";
if (adodb_year_digit_check(50) != 1950) print "Err 2-digit 1950<br>";
if (adodb_year_digit_check(90) != 1990) print "Err 2-digit 1990<br>";
// Test string formating
print "<p>Testing date formating</p>";
$fmt = '\d\a\t\e T Y-m-d H:i:s a A d D F g G h H i j l L m M n O \R\F\C2822 r s t U w y Y z Z 2003';
$s1 = date($fmt,0);
$s2 = adodb_date($fmt,0);
if ($s1 != $s2) {
print " date() 0 failed<br>$s1<br>$s2<br>";
}
flush();
for ($i=100; --$i > 0; ) {
$ts = 3600.0*((rand()%60000)+(rand()%60000))+(rand()%60000);
$s1 = date($fmt,$ts);
$s2 = adodb_date($fmt,$ts);
//print "$s1 <br>$s2 <p>";
$pos = strcmp($s1,$s2);
if (($s1) != ($s2)) {
for ($j=0,$k=strlen($s1); $j < $k; $j++) {
if ($s1[$j] != $s2[$j]) {
print substr($s1,$j).' ';
break;
}
}
print "<b>Error date(): $ts<br><pre>
\"$s1\" (date len=".strlen($s1).")
\"$s2\" (adodb_date len=".strlen($s2).")</b></pre><br>";
$fail = true;
}
$a1 = getdate($ts);
$a2 = adodb_getdate($ts);
$rez = array_diff($a1,$a2);
if (sizeof($rez)>0) {
print "<b>Error getdate() $ts</b><br>";
print_r($a1);
print "<br>";
print_r($a2);
print "<p>";
$fail = true;
}
}
// Test generation of dates outside 1901-2038
print "<p>Testing random dates between 100 and 4000</p>";
adodb_date_test_date(100,1);
for ($i=100; --$i >= 0;) {
$y1 = 100+rand(0,1970-100);
$m = rand(1,12);
adodb_date_test_date($y1,$m);
$y1 = 3000-rand(0,3000-1970);
adodb_date_test_date($y1,$m);
}
print '<p>';
$start = 1960+rand(0,10);
$yrs = 12;
$i = 365.25*86400*($start-1970);
$offset = 36000+rand(10000,60000);
$max = 365*$yrs*86400;
$lastyear = 0;
// we generate a timestamp, convert it to a date, and convert it back to a timestamp
// and check if the roundtrip broke the original timestamp value.
print "Testing $start to ".($start+$yrs).", or $max seconds, offset=$offset: ";
$cnt = 0;
for ($max += $i; $i < $max; $i += $offset) {
$ret = adodb_date('m,d,Y,H,i,s',$i);
$arr = explode(',',$ret);
if ($lastyear != $arr[2]) {
$lastyear = $arr[2];
print " $lastyear ";
flush();
}
$newi = adodb_mktime($arr[3],$arr[4],$arr[5],$arr[0],$arr[1],$arr[2]);
if ($i != $newi) {
print "Error at $i, adodb_mktime returned $newi ($ret)";
$fail = true;
break;
}
$cnt += 1;
}
echo "Tested $cnt dates<br>";
if (!$fail) print "<p>Passed !</p>";
else print "<p><b>Failed</b> :-(</p>";
}
function adodb_time()
{
$d = new DateTime();
return $d->format('U');
}
/**
Returns day of week, 0 = Sunday,... 6=Saturday.
Algorithm from PEAR::Date_Calc
*/
function adodb_dow($year, $month, $day)
{
/*
Pope Gregory removed 10 days - October 5 to October 14 - from the year 1582 and
proclaimed that from that time onwards 3 days would be dropped from the calendar
every 400 years.
Thursday, October 4, 1582 (Julian) was followed immediately by Friday, October 15, 1582 (Gregorian).
*/
if ($year <= 1582) {
if ($year < 1582 ||
($year == 1582 && ($month < 10 || ($month == 10 && $day < 15)))) $greg_correction = 3;
else
$greg_correction = 0;
} else
$greg_correction = 0;
if($month > 2)
$month -= 2;
else {
$month += 10;
$year--;
}
$day = floor((13 * $month - 1) / 5) +
$day + ($year % 100) +
floor(($year % 100) / 4) +
floor(($year / 100) / 4) - 2 *
floor($year / 100) + 77 + $greg_correction;
return $day - 7 * floor($day / 7);
}
/**
Checks for leap year, returns true if it is. No 2-digit year check. Also
handles julian calendar correctly.
*/
function _adodb_is_leap_year($year)
{
if ($year % 4 != 0) return false;
if ($year % 400 == 0) {
return true;
// if gregorian calendar (>1582), century not-divisible by 400 is not leap
} else if ($year > 1582 && $year % 100 == 0 ) {
return false;
}
return true;
}
/**
checks for leap year, returns true if it is. Has 2-digit year check
*/
function adodb_is_leap_year($year)
{
return _adodb_is_leap_year(adodb_year_digit_check($year));
}
/**
Fix 2-digit years. Works for any century.
Assumes that if 2-digit is more than 30 years in future, then previous century.
*/
function adodb_year_digit_check($y)
{
if ($y < 100) {
$yr = (integer) date("Y");
$century = (integer) ($yr /100);
if ($yr%100 > 50) {
$c1 = $century + 1;
$c0 = $century;
} else {
$c1 = $century;
$c0 = $century - 1;
}
$c1 *= 100;
// if 2-digit year is less than 30 years in future, set it to this century
// otherwise if more than 30 years in future, then we set 2-digit year to the prev century.
if (($y + $c1) < $yr+30) $y = $y + $c1;
else $y = $y + $c0*100;
}
return $y;
}
function adodb_get_gmt_diff_ts($ts)
{
if (0 <= $ts && $ts <= 0x7FFFFFFF) { // check if number in 32-bit signed range) {
$arr = getdate($ts);
$y = $arr['year'];
$m = $arr['mon'];
$d = $arr['mday'];
return adodb_get_gmt_diff($y,$m,$d);
} else {
return adodb_get_gmt_diff(false,false,false);
}
}
/**
get local time zone offset from GMT. Does not handle historical timezones before 1970.
*/
function adodb_get_gmt_diff($y,$m,$d)
{
static $TZ,$tzo;
global $ADODB_DATETIME_CLASS;
if (!defined('ADODB_TEST_DATES')) $y = false;
else if ($y < 1970 || $y >= 2038) $y = false;
if ($ADODB_DATETIME_CLASS && $y !== false) {
$dt = new DateTime();
$dt->setISODate($y,$m,$d);
if (empty($tzo)) {
$tzo = new DateTimeZone(date_default_timezone_get());
# $tzt = timezone_transitions_get( $tzo );
}
return -$tzo->getOffset($dt);
} else {
if (isset($TZ)) return $TZ;
$y = date('Y');
/*
if (function_exists('date_default_timezone_get') && function_exists('timezone_offset_get')) {
$tzonename = date_default_timezone_get();
if ($tzonename) {
$tobj = new DateTimeZone($tzonename);
$TZ = -timezone_offset_get($tobj,new DateTime("now",$tzo));
}
}
*/
if (empty($TZ)) $TZ = mktime(0,0,0,12,2,$y) - gmmktime(0,0,0,12,2,$y);
}
return $TZ;
}
/**
Returns an array with date info.
*/
function adodb_getdate($d=false,$fast=false)
{
if ($d === false) return getdate();
if (!defined('ADODB_TEST_DATES')) {
if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range
if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer
return @getdate($d);
}
}
return _adodb_getdate($d);
}
/*
// generate $YRS table for _adodb_getdate()
function adodb_date_gentable($out=true)
{
for ($i=1970; $i >= 1600; $i-=10) {
$s = adodb_gmmktime(0,0,0,1,1,$i);
echo "$i => $s,<br>";
}
}
adodb_date_gentable();
for ($i=1970; $i > 1500; $i--) {
echo "<hr />$i ";
adodb_date_test_date($i,1,1);
}
*/
$_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);
$_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);
function adodb_validdate($y,$m,$d)
{
global $_month_table_normal,$_month_table_leaf;
if (_adodb_is_leap_year($y)) $marr = $_month_table_leaf;
else $marr = $_month_table_normal;
if ($m > 12 || $m < 1) return false;
if ($d > 31 || $d < 1) return false;
if ($marr[$m] < $d) return false;
if ($y < 1000 && $y > 3000) return false;
return true;
}
/**
Low-level function that returns the getdate() array. We have a special
$fast flag, which if set to true, will return fewer array values,
and is much faster as it does not calculate dow, etc.
*/
function _adodb_getdate($origd=false,$fast=false,$is_gmt=false)
{
static $YRS;
global $_month_table_normal,$_month_table_leaf;
$d = $origd - ($is_gmt ? 0 : adodb_get_gmt_diff_ts($origd));
$_day_power = 86400;
$_hour_power = 3600;
$_min_power = 60;
if ($d < -12219321600) $d -= 86400*10; // if 15 Oct 1582 or earlier, gregorian correction
$_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);
$_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);
$d366 = $_day_power * 366;
$d365 = $_day_power * 365;
if ($d < 0) {
if (empty($YRS)) $YRS = array(
1970 => 0,
1960 => -315619200,
1950 => -631152000,
1940 => -946771200,
1930 => -1262304000,
1920 => -1577923200,
1910 => -1893456000,
1900 => -2208988800,
1890 => -2524521600,
1880 => -2840140800,
1870 => -3155673600,
1860 => -3471292800,
1850 => -3786825600,
1840 => -4102444800,
1830 => -4417977600,
1820 => -4733596800,
1810 => -5049129600,
1800 => -5364662400,
1790 => -5680195200,
1780 => -5995814400,
1770 => -6311347200,
1760 => -6626966400,
1750 => -6942499200,
1740 => -7258118400,
1730 => -7573651200,
1720 => -7889270400,
1710 => -8204803200,
1700 => -8520336000,
1690 => -8835868800,
1680 => -9151488000,
1670 => -9467020800,
1660 => -9782640000,
1650 => -10098172800,
1640 => -10413792000,
1630 => -10729324800,
1620 => -11044944000,
1610 => -11360476800,
1600 => -11676096000);
if ($is_gmt) $origd = $d;
// The valid range of a 32bit signed timestamp is typically from
// Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT
//
# old algorithm iterates through all years. new algorithm does it in
# 10 year blocks
/*
# old algo
for ($a = 1970 ; --$a >= 0;) {
$lastd = $d;
if ($leaf = _adodb_is_leap_year($a)) $d += $d366;
else $d += $d365;
if ($d >= 0) {
$year = $a;
break;
}
}
*/
$lastsecs = 0;
$lastyear = 1970;
foreach($YRS as $year => $secs) {
if ($d >= $secs) {
$a = $lastyear;
break;
}
$lastsecs = $secs;
$lastyear = $year;
}
$d -= $lastsecs;
if (!isset($a)) $a = $lastyear;
//echo ' yr=',$a,' ', $d,'.';
for (; --$a >= 0;) {
$lastd = $d;
if ($leaf = _adodb_is_leap_year($a)) $d += $d366;
else $d += $d365;
if ($d >= 0) {
$year = $a;
break;
}
}
/**/
$secsInYear = 86400 * ($leaf ? 366 : 365) + $lastd;
$d = $lastd;
$mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;
for ($a = 13 ; --$a > 0;) {
$lastd = $d;
$d += $mtab[$a] * $_day_power;
if ($d >= 0) {
$month = $a;
$ndays = $mtab[$a];
break;
}
}
$d = $lastd;
$day = $ndays + ceil(($d+1) / ($_day_power));
$d += ($ndays - $day+1)* $_day_power;
$hour = floor($d/$_hour_power);
} else {
for ($a = 1970 ;; $a++) {
$lastd = $d;
if ($leaf = _adodb_is_leap_year($a)) $d -= $d366;
else $d -= $d365;
if ($d < 0) {
$year = $a;
break;
}
}
$secsInYear = $lastd;
$d = $lastd;
$mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal;
for ($a = 1 ; $a <= 12; $a++) {
$lastd = $d;
$d -= $mtab[$a] * $_day_power;
if ($d < 0) {
$month = $a;
$ndays = $mtab[$a];
break;
}
}
$d = $lastd;
$day = ceil(($d+1) / $_day_power);
$d = $d - ($day-1) * $_day_power;
$hour = floor($d /$_hour_power);
}
$d -= $hour * $_hour_power;
$min = floor($d/$_min_power);
$secs = $d - $min * $_min_power;
if ($fast) {
return array(
'seconds' => $secs,
'minutes' => $min,
'hours' => $hour,
'mday' => $day,
'mon' => $month,
'year' => $year,
'yday' => floor($secsInYear/$_day_power),
'leap' => $leaf,
'ndays' => $ndays
);