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- Bug fixes for general core bugs in 4.3.x will end 7 October 2024 (12 months).
- Bug fixes for security issues in 4.3.x will end 21 April 2025 (18 months).
- PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.2.x is supported too.
/lib/adodb/ -> adodb-time.inc.php (source)
Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403]
1 <?php 2 /** 3 * ADOdb Date Library. 4 * 5 * PHP native date functions use integer timestamps for computations. 6 * Because of this, dates are restricted to the years 1901-2038 on Unix 7 * and 1970-2038 on Windows due to integer overflow for dates beyond 8 * those years. This library overcomes these limitations by replacing the 9 * native function's signed integers (normally 32-bits) with PHP floating 10 * point numbers (normally 64-bits). 11 * 12 * Dates from 100 A.D. to 3000 A.D. and later have been tested. 13 * The minimum is 100 A.D. as <100 will invoke the 2 => 4 digit year 14 * conversion. The maximum is billions of years in the future, but this 15 * is a theoretical limit as the computation of that year would take too 16 * long with the current implementation of adodb_mktime(). 17 * 18 * Replaces native functions as follows: 19 * - getdate() with adodb_getdate() 20 * - date() with adodb_date() 21 * - gmdate() with adodb_gmdate() 22 * - mktime() with adodb_mktime() 23 * - gmmktime() with adodb_gmmktime() 24 * - strftime() with adodb_strftime() 25 * - strftime() with adodb_gmstrftime() 26 * 27 * The parameters are identical, except that adodb_date() accepts a subset 28 * of date()'s field formats. Mktime() will convert from local time to GMT, 29 * and date() will convert from GMT to local time, but daylight savings is 30 * not handled currently. 31 * 32 * To improve performance, the native date functions are used whenever 33 * possible, the library only switches to PHP code when the dates fall outside 34 * of the 32-bit signed integer range. 35 * 36 * This library is independent of the rest of ADOdb, and can be used 37 * as standalone code. 38 * 39 * GREGORIAN CORRECTION 40 * 41 * Pope Gregory shortened October of A.D. 1582 by ten days. Thursday, 42 * October 4, 1582 (Julian) was followed immediately by Friday, October 15, 43 * 1582 (Gregorian). We handle this correctly, so: 44 * adodb_mktime(0, 0, 0, 10, 15, 1582) - adodb_mktime(0, 0, 0, 10, 4, 1582) 45 * == 24 * 3600 (1 day) 46 * 47 * This file is part of ADOdb, a Database Abstraction Layer library for PHP. 48 * 49 * @package ADOdb 50 * @link https://adodb.org Project's web site and documentation 51 * @link https://github.com/ADOdb/ADOdb Source code and issue tracker 52 * 53 * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause 54 * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option, 55 * any later version. This means you can use it in proprietary products. 56 * See the LICENSE.md file distributed with this source code for details. 57 * @license BSD-3-Clause 58 * @license LGPL-2.1-or-later 59 * 60 * @copyright 2003-2013 John Lim 61 * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community 62 */ 63 64 /* 65 ============================================================================= 66 67 FUNCTION DESCRIPTIONS 68 69 ** FUNCTION adodb_time() 70 71 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. 72 73 ** FUNCTION adodb_getdate($date=false) 74 75 Returns an array containing date information, as getdate(), but supports 76 dates greater than 1901 to 2038. The local date/time format is derived from a 77 heuristic the first time adodb_getdate is called. 78 79 80 ** FUNCTION adodb_date($fmt, $timestamp = false) 81 82 Convert a timestamp to a formatted local date. If $timestamp is not defined, the 83 current timestamp is used. Unlike the function date(), it supports dates 84 outside the 1901 to 2038 range. 85 86 The format fields that adodb_date supports: 87 88 <pre> 89 a - "am" or "pm" 90 A - "AM" or "PM" 91 d - day of the month, 2 digits with leading zeros; i.e. "01" to "31" 92 D - day of the week, textual, 3 letters; e.g. "Fri" 93 F - month, textual, long; e.g. "January" 94 g - hour, 12-hour format without leading zeros; i.e. "1" to "12" 95 G - hour, 24-hour format without leading zeros; i.e. "0" to "23" 96 h - hour, 12-hour format; i.e. "01" to "12" 97 H - hour, 24-hour format; i.e. "00" to "23" 98 i - minutes; i.e. "00" to "59" 99 j - day of the month without leading zeros; i.e. "1" to "31" 100 l (lowercase 'L') - day of the week, textual, long; e.g. "Friday" 101 L - boolean for whether it is a leap year; i.e. "0" or "1" 102 m - month; i.e. "01" to "12" 103 M - month, textual, 3 letters; e.g. "Jan" 104 n - month without leading zeros; i.e. "1" to "12" 105 O - Difference to Greenwich time in hours; e.g. "+0200" 106 Q - Quarter, as in 1, 2, 3, 4 107 r - RFC 2822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200" 108 s - seconds; i.e. "00" to "59" 109 S - English ordinal suffix for the day of the month, 2 characters; 110 i.e. "st", "nd", "rd" or "th" 111 t - number of days in the given month; i.e. "28" to "31" 112 T - Timezone setting of this machine; e.g. "EST" or "MDT" 113 U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) 114 w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday) 115 Y - year, 4 digits; e.g. "1999" 116 y - year, 2 digits; e.g. "99" 117 z - day of the year; i.e. "0" to "365" 118 Z - timezone offset in seconds (i.e. "-43200" to "43200"). 119 The offset for timezones west of UTC is always negative, 120 and for those east of UTC is always positive. 121 </pre> 122 123 Unsupported: 124 <pre> 125 B - Swatch Internet time 126 I (capital i) - "1" if Daylight Savings Time, "0" otherwise. 127 W - ISO-8601 week number of year, weeks starting on Monday 128 129 </pre> 130 131 132 ** FUNCTION adodb_date2($fmt, $isoDateString = false) 133 Same as adodb_date, but 2nd parameter accepts iso date, eg. 134 135 adodb_date2('d-M-Y H:i','2003-12-25 13:01:34'); 136 137 138 ** FUNCTION adodb_gmdate($fmt, $timestamp = false) 139 140 Convert a timestamp to a formatted GMT date. If $timestamp is not defined, the 141 current timestamp is used. Unlike the function date(), it supports dates 142 outside the 1901 to 2038 range. 143 144 145 ** FUNCTION adodb_mktime($hr, $min, $sec[, $month, $day, $year]) 146 147 Converts a local date to a unix timestamp. Unlike the function mktime(), it supports 148 dates outside the 1901 to 2038 range. All parameters are optional. 149 150 151 ** FUNCTION adodb_gmmktime($hr, $min, $sec [, $month, $day, $year]) 152 153 Converts a gmt date to a unix timestamp. Unlike the function gmmktime(), it supports 154 dates outside the 1901 to 2038 range. Differs from gmmktime() in that all parameters 155 are currently compulsory. 156 157 ** FUNCTION adodb_gmstrftime($fmt, $timestamp = false) 158 Convert a timestamp to a formatted GMT date. 159 160 ** FUNCTION adodb_strftime($fmt, $timestamp = false) 161 162 Convert a timestamp to a formatted local date. Internally converts $fmt into 163 adodb_date format, then echo result. 164 165 For best results, you can define the local date format yourself. Define a global 166 variable $ADODB_DATE_LOCALE which is an array, 1st element is date format using 167 adodb_date syntax, and 2nd element is the time format, also in adodb_date syntax. 168 169 eg. $ADODB_DATE_LOCALE = array('d/m/Y','H:i:s'); 170 171 Supported format codes: 172 173 <pre> 174 %a - abbreviated weekday name according to the current locale 175 %A - full weekday name according to the current locale 176 %b - abbreviated month name according to the current locale 177 %B - full month name according to the current locale 178 %c - preferred date and time representation for the current locale 179 %d - day of the month as a decimal number (range 01 to 31) 180 %D - same as %m/%d/%y 181 %e - day of the month as a decimal number, a single digit is preceded by a space (range ' 1' to '31') 182 %h - same as %b 183 %H - hour as a decimal number using a 24-hour clock (range 00 to 23) 184 %I - hour as a decimal number using a 12-hour clock (range 01 to 12) 185 %m - month as a decimal number (range 01 to 12) 186 %M - minute as a decimal number 187 %n - newline character 188 %p - either `am' or `pm' according to the given time value, or the corresponding strings for the current locale 189 %r - time in a.m. and p.m. notation 190 %R - time in 24 hour notation 191 %S - second as a decimal number 192 %t - tab character 193 %T - current time, equal to %H:%M:%S 194 %x - preferred date representation for the current locale without the time 195 %X - preferred time representation for the current locale without the date 196 %y - year as a decimal number without a century (range 00 to 99) 197 %Y - year as a decimal number including the century 198 %Z - time zone or name or abbreviation 199 %% - a literal `%' character 200 </pre> 201 202 Unsupported codes: 203 <pre> 204 %C - century number (the year divided by 100 and truncated to an integer, range 00 to 99) 205 %g - like %G, but without the century. 206 %G - The 4-digit year corresponding to the ISO week number (see %V). 207 This has the same format and value as %Y, except that if the ISO week number belongs 208 to the previous or next year, that year is used instead. 209 %j - day of the year as a decimal number (range 001 to 366) 210 %u - weekday as a decimal number [1,7], with 1 representing Monday 211 %U - week number of the current year as a decimal number, starting 212 with the first Sunday as the first day of the first week 213 %V - The ISO 8601:1988 week number of the current year as a decimal number, 214 range 01 to 53, where week 1 is the first week that has at least 4 days in the 215 current year, and with Monday as the first day of the week. (Use %G or %g for 216 the year component that corresponds to the week number for the specified timestamp.) 217 %w - day of the week as a decimal, Sunday being 0 218 %W - week number of the current year as a decimal number, starting with the 219 first Monday as the first day of the first week 220 </pre> 221 222 ============================================================================= 223 224 NOTES 225 226 Useful url for generating test timestamps: 227 http://www.4webhelp.net/us/timestamp.php 228 229 Possible future optimizations include 230 231 a. Using an algorithm similar to Plauger's in "The Standard C Library" 232 (page 428, xttotm.c _Ttotm() function). Plauger's algorithm will not 233 work outside 32-bit signed range, so i decided not to implement it. 234 235 b. Implement daylight savings, which looks awfully complicated, see 236 http://webexhibits.org/daylightsaving/ 237 238 239 CHANGELOG 240 - 16 Jan 2011 0.36 241 Added adodb_time() which returns current time. If > 2038, will return as float 242 243 - 7 Feb 2011 0.35 244 Changed adodb_date to be symmetric with adodb_mktime. See $jan1_71. fix for bc. 245 246 - 13 July 2010 0.34 247 Changed adodb_get_gm_diff to use DateTimeZone(). 248 249 - 11 Feb 2008 0.33 250 * Bug in 0.32 fix for hour handling. Fixed. 251 252 - 1 Feb 2008 0.32 253 * Now adodb_mktime(0,0,0,12+$m,20,2040) works properly. 254 255 - 10 Jan 2008 0.31 256 * Now adodb_mktime(0,0,0,24,1,2037) works correctly. 257 258 - 15 July 2007 0.30 259 Added PHP 5.2.0 compatibility fixes. 260 * gmtime behaviour for 1970 has changed. We use the actual date if it is between 1970 to 2038 to get the 261 * timezone, otherwise we use the current year as the baseline to retrieve the timezone. 262 * Also the timezone's in php 5.2.* support historical data better, eg. if timezone today was +8, but 263 in 1970 it was +7:30, then php 5.2 return +7:30, while this library will use +8. 264 * 265 266 - 19 March 2006 0.24 267 Changed strftime() locale detection, because some locales prepend the day of week to the date when %c is used. 268 269 - 10 Feb 2006 0.23 270 PHP5 compat: when we detect PHP5, the RFC2822 format for gmt 0000hrs is changed from -0000 to +0000. 271 In PHP4, we will still use -0000 for 100% compat with PHP4. 272 273 - 08 Sept 2005 0.22 274 In adodb_date2(), $is_gmt not supported properly. Fixed. 275 276 - 18 July 2005 0.21 277 In PHP 4.3.11, the 'r' format has changed. Leading 0 in day is added. Changed for compat. 278 Added support for negative months in adodb_mktime(). 279 280 - 24 Feb 2005 0.20 281 Added limited strftime/gmstrftime support. x10 improvement in performance of adodb_date(). 282 283 - 21 Dec 2004 0.17 284 In adodb_getdate(), the timestamp was accidentally converted to gmt when $is_gmt is false. 285 Also adodb_mktime(0,0,0) did not work properly. Both fixed thx Mauro. 286 287 - 17 Nov 2004 0.16 288 Removed intval typecast in adodb_mktime() for secs, allowing: 289 adodb_mktime(0,0,0 + 2236672153,1,1,1934); 290 Suggested by Ryan. 291 292 - 18 July 2004 0.15 293 All params in adodb_mktime were formerly compulsory. Now only the hour, min, secs is compulsory. 294 This brings it more in line with mktime (still not identical). 295 296 - 23 June 2004 0.14 297 298 Allow you to define your own daylights savings function, adodb_daylight_sv. 299 If the function is defined (somewhere in an include), then you can correct for daylights savings. 300 301 In this example, we apply daylights savings in June or July, adding one hour. This is extremely 302 unrealistic as it does not take into account time-zone, geographic location, current year. 303 304 function adodb_daylight_sv(&$arr, $is_gmt) 305 { 306 if ($is_gmt) return; 307 $m = $arr['mon']; 308 if ($m == 6 || $m == 7) $arr['hours'] += 1; 309 } 310 311 This is only called by adodb_date() and not by adodb_mktime(). 312 313 The format of $arr is 314 Array ( 315 [seconds] => 0 316 [minutes] => 0 317 [hours] => 0 318 [mday] => 1 # day of month, eg 1st day of the month 319 [mon] => 2 # month (eg. Feb) 320 [year] => 2102 321 [yday] => 31 # days in current year 322 [leap] => # true if leap year 323 [ndays] => 28 # no of days in current month 324 ) 325 326 327 - 28 Apr 2004 0.13 328 Fixed adodb_date to properly support $is_gmt. Thx to Dimitar Angelov. 329 330 - 20 Mar 2004 0.12 331 Fixed month calculation error in adodb_date. 2102-June-01 appeared as 2102-May-32. 332 333 - 26 Oct 2003 0.11 334 Because of daylight savings problems (some systems apply daylight savings to 335 January!!!), changed adodb_get_gmt_diff() to ignore daylight savings. 336 337 - 9 Aug 2003 0.10 338 Fixed bug with dates after 2038. 339 See PHPLens Issue No: 6980 340 341 - 1 July 2003 0.09 342 Added support for Q (Quarter). 343 Added adodb_date2(), which accepts ISO date in 2nd param 344 345 - 3 March 2003 0.08 346 Added support for 'S' adodb_date() format char. Added constant ADODB_ALLOW_NEGATIVE_TS 347 if you want PHP to handle negative timestamps between 1901 to 1969. 348 349 - 27 Feb 2003 0.07 350 All negative numbers handled by adodb now because of RH 7.3+ problems. 351 See http://bugs.php.net/bug.php?id=20048&edit=2 352 353 - 4 Feb 2003 0.06 354 Fixed a typo, 1852 changed to 1582! This means that pre-1852 dates 355 are now correctly handled. 356 357 - 29 Jan 2003 0.05 358 359 Leap year checking differs under Julian calendar (pre 1582). Also 360 leap year code optimized by checking for most common case first. 361 362 We also handle month overflow correctly in mktime (eg month set to 13). 363 364 Day overflow for less than one month's days is supported. 365 366 - 28 Jan 2003 0.04 367 368 Gregorian correction handled. In PHP5, we might throw an error if 369 mktime uses invalid dates around 5-14 Oct 1582. Released with ADOdb 3.10. 370 Added limbo 5-14 Oct 1582 check, when we set to 15 Oct 1582. 371 372 - 27 Jan 2003 0.03 373 374 Fixed some more month problems due to gmt issues. Added constant ADODB_DATE_VERSION. 375 Fixed calculation of days since start of year for <1970. 376 377 - 27 Jan 2003 0.02 378 379 Changed _adodb_getdate() to inline leap year checking for better performance. 380 Fixed problem with time-zones west of GMT +0000. 381 382 - 24 Jan 2003 0.01 383 384 First implementation. 385 */ 386 387 388 /* Initialization */ 389 390 /* 391 Version Number 392 */ 393 define('ADODB_DATE_VERSION',0.35); 394 395 /* 396 This code was originally for windows. But apparently this problem happens 397 also with Linux, RH 7.3 and later! 398 399 glibc-2.2.5-34 and greater has been changed to return -1 for dates < 400 1970. This used to work. The problem exists with RedHat 7.3 and 8.0 401 echo (mktime(0, 0, 0, 1, 1, 1960)); // prints -1 402 403 References: 404 http://bugs.php.net/bug.php?id=20048&edit=2 405 http://lists.debian.org/debian-glibc/2002/debian-glibc-200205/msg00010.html 406 */ 407 408 if (!defined('ADODB_ALLOW_NEGATIVE_TS')) define('ADODB_NO_NEGATIVE_TS',1); 409 410 if (!DEFINED('ADODB_FUTURE_DATE_CUTOFF_YEARS')) 411 DEFINE('ADODB_FUTURE_DATE_CUTOFF_YEARS',200); 412 413 function adodb_date_test_date($y1,$m,$d=13) 414 { 415 $h = round(rand()% 24); 416 $t = adodb_mktime($h,0,0,$m,$d,$y1); 417 $rez = adodb_date('Y-n-j H:i:s',$t); 418 if ($h == 0) $h = '00'; 419 else if ($h < 10) $h = '0'.$h; 420 if ("$y1-$m-$d $h:00:00" != $rez) { 421 print "<b>$y1 error, expected=$y1-$m-$d $h:00:00, adodb=$rez</b><br>"; 422 return false; 423 } 424 return true; 425 } 426 427 function adodb_date_test_strftime($fmt) 428 { 429 $s1 = strftime($fmt); 430 $s2 = adodb_strftime($fmt); 431 432 if ($s1 == $s2) return true; 433 434 echo "error for $fmt, strftime=$s1, adodb=$s2<br>"; 435 return false; 436 } 437 438 /** 439 Test Suite 440 */ 441 function adodb_date_test() 442 { 443 444 for ($m=-24; $m<=24; $m++) 445 echo "$m :",adodb_date('d-m-Y',adodb_mktime(0,0,0,1+$m,20,2040)),"<br>"; 446 447 error_reporting(E_ALL); 448 print "<h4>Testing adodb_date and adodb_mktime. version=".ADODB_DATE_VERSION.' PHP='.PHP_VERSION."</h4>"; 449 @set_time_limit(0); 450 $fail = false; 451 452 // This flag disables calling of PHP native functions, so we can properly test the code 453 if (!defined('ADODB_TEST_DATES')) define('ADODB_TEST_DATES',1); 454 455 $t = time(); 456 457 458 $fmt = 'Y-m-d H:i:s'; 459 echo '<pre>'; 460 echo 'adodb: ',adodb_date($fmt,$t),'<br>'; 461 echo 'php : ',date($fmt,$t),'<br>'; 462 echo '</pre>'; 463 464 adodb_date_test_strftime('%Y %m %x %X'); 465 adodb_date_test_strftime("%A %d %B %Y"); 466 adodb_date_test_strftime("%H %M S"); 467 468 $t = adodb_mktime(0,0,0); 469 if (!(adodb_date('Y-m-d') == date('Y-m-d'))) print 'Error in '.adodb_mktime(0,0,0).'<br>'; 470 471 $t = adodb_mktime(0,0,0,6,1,2102); 472 if (!(adodb_date('Y-m-d',$t) == '2102-06-01')) print 'Error in '.adodb_date('Y-m-d',$t).'<br>'; 473 474 $t = adodb_mktime(0,0,0,2,1,2102); 475 if (!(adodb_date('Y-m-d',$t) == '2102-02-01')) print 'Error in '.adodb_date('Y-m-d',$t).'<br>'; 476 477 478 print "<p>Testing gregorian <=> julian conversion<p>"; 479 $t = adodb_mktime(0,0,0,10,11,1492); 480 //http://www.holidayorigins.com/html/columbus_day.html - Friday check 481 if (!(adodb_date('D Y-m-d',$t) == 'Fri 1492-10-11')) print 'Error in Columbus landing<br>'; 482 483 $t = adodb_mktime(0,0,0,2,29,1500); 484 if (!(adodb_date('Y-m-d',$t) == '1500-02-29')) print 'Error in julian leap years<br>'; 485 486 $t = adodb_mktime(0,0,0,2,29,1700); 487 if (!(adodb_date('Y-m-d',$t) == '1700-03-01')) print 'Error in gregorian leap years<br>'; 488 489 print adodb_mktime(0,0,0,10,4,1582).' '; 490 print adodb_mktime(0,0,0,10,15,1582); 491 $diff = (adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582)); 492 if ($diff != 3600*24) print " <b>Error in gregorian correction = ".($diff/3600/24)." days </b><br>"; 493 494 print " 15 Oct 1582, Fri=".(adodb_dow(1582,10,15) == 5 ? 'Fri' : '<b>Error</b>')."<br>"; 495 print " 4 Oct 1582, Thu=".(adodb_dow(1582,10,4) == 4 ? 'Thu' : '<b>Error</b>')."<br>"; 496 497 print "<p>Testing overflow<p>"; 498 499 $t = adodb_mktime(0,0,0,3,33,1965); 500 if (!(adodb_date('Y-m-d',$t) == '1965-04-02')) print 'Error in day overflow 1 <br>'; 501 $t = adodb_mktime(0,0,0,4,33,1971); 502 if (!(adodb_date('Y-m-d',$t) == '1971-05-03')) print 'Error in day overflow 2 <br>'; 503 $t = adodb_mktime(0,0,0,1,60,1965); 504 if (!(adodb_date('Y-m-d',$t) == '1965-03-01')) print 'Error in day overflow 3 '.adodb_date('Y-m-d',$t).' <br>'; 505 $t = adodb_mktime(0,0,0,12,32,1965); 506 if (!(adodb_date('Y-m-d',$t) == '1966-01-01')) print 'Error in day overflow 4 '.adodb_date('Y-m-d',$t).' <br>'; 507 $t = adodb_mktime(0,0,0,12,63,1965); 508 if (!(adodb_date('Y-m-d',$t) == '1966-02-01')) print 'Error in day overflow 5 '.adodb_date('Y-m-d',$t).' <br>'; 509 $t = adodb_mktime(0,0,0,13,3,1965); 510 if (!(adodb_date('Y-m-d',$t) == '1966-01-03')) print 'Error in mth overflow 1 <br>'; 511 512 print "Testing 2-digit => 4-digit year conversion<p>"; 513 if (adodb_year_digit_check(00) != 2000) print "Err 2-digit 2000<br>"; 514 if (adodb_year_digit_check(10) != 2010) print "Err 2-digit 2010<br>"; 515 if (adodb_year_digit_check(20) != 2020) print "Err 2-digit 2020<br>"; 516 if (adodb_year_digit_check(30) != 2030) print "Err 2-digit 2030<br>"; 517 if (adodb_year_digit_check(40) != 1940) print "Err 2-digit 1940<br>"; 518 if (adodb_year_digit_check(50) != 1950) print "Err 2-digit 1950<br>"; 519 if (adodb_year_digit_check(90) != 1990) print "Err 2-digit 1990<br>"; 520 521 // Test string formatting 522 print "<p>Testing date formatting</p>"; 523 524 $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'; 525 $s1 = date($fmt,0); 526 $s2 = adodb_date($fmt,0); 527 if ($s1 != $s2) { 528 print " date() 0 failed<br>$s1<br>$s2<br>"; 529 } 530 flush(); 531 for ($i=100; --$i > 0; ) { 532 533 $ts = 3600.0*((rand()%60000)+(rand()%60000))+(rand()%60000); 534 $s1 = date($fmt,$ts); 535 $s2 = adodb_date($fmt,$ts); 536 //print "$s1 <br>$s2 <p>"; 537 $pos = strcmp($s1,$s2); 538 539 if (($s1) != ($s2)) { 540 for ($j=0,$k=strlen($s1); $j < $k; $j++) { 541 if ($s1[$j] != $s2[$j]) { 542 print substr($s1,$j).' '; 543 break; 544 } 545 } 546 print "<b>Error date(): $ts<br><pre> 547 \"$s1\" (date len=".strlen($s1).") 548 \"$s2\" (adodb_date len=".strlen($s2).")</b></pre><br>"; 549 $fail = true; 550 } 551 552 $a1 = getdate($ts); 553 $a2 = adodb_getdate($ts); 554 $rez = array_diff($a1,$a2); 555 if (sizeof($rez)>0) { 556 print "<b>Error getdate() $ts</b><br>"; 557 print_r($a1); 558 print "<br>"; 559 print_r($a2); 560 print "<p>"; 561 $fail = true; 562 } 563 } 564 565 // Test generation of dates outside 1901-2038 566 print "<p>Testing random dates between 100 and 4000</p>"; 567 adodb_date_test_date(100,1); 568 for ($i=100; --$i >= 0;) { 569 $y1 = 100+rand(0,1970-100); 570 $m = rand(1,12); 571 adodb_date_test_date($y1,$m); 572 573 $y1 = 3000-rand(0,3000-1970); 574 adodb_date_test_date($y1,$m); 575 } 576 print '<p>'; 577 $start = 1960+rand(0,10); 578 $yrs = 12; 579 $i = 365.25*86400*($start-1970); 580 $offset = 36000+rand(10000,60000); 581 $max = 365*$yrs*86400; 582 $lastyear = 0; 583 584 // we generate a timestamp, convert it to a date, and convert it back to a timestamp 585 // and check if the roundtrip broke the original timestamp value. 586 print "Testing $start to ".($start+$yrs).", or $max seconds, offset=$offset: "; 587 $cnt = 0; 588 for ($max += $i; $i < $max; $i += $offset) { 589 $ret = adodb_date('m,d,Y,H,i,s',$i); 590 $arr = explode(',',$ret); 591 if ($lastyear != $arr[2]) { 592 $lastyear = $arr[2]; 593 print " $lastyear "; 594 flush(); 595 } 596 $newi = adodb_mktime($arr[3],$arr[4],$arr[5],$arr[0],$arr[1],$arr[2]); 597 if ($i != $newi) { 598 print "Error at $i, adodb_mktime returned $newi ($ret)"; 599 $fail = true; 600 break; 601 } 602 $cnt += 1; 603 } 604 echo "Tested $cnt dates<br>"; 605 if (!$fail) print "<p>Passed !</p>"; 606 else print "<p><b>Failed</b> :-(</p>"; 607 } 608 609 function adodb_time() 610 { 611 $d = new DateTime(); 612 return $d->format('U'); 613 } 614 615 /** 616 Returns day of week, 0 = Sunday,... 6=Saturday. 617 Algorithm from PEAR::Date_Calc 618 */ 619 function adodb_dow($year, $month, $day) 620 { 621 /* 622 Pope Gregory removed 10 days - October 5 to October 14 - from the year 1582 and 623 proclaimed that from that time onwards 3 days would be dropped from the calendar 624 every 400 years. 625 626 Thursday, October 4, 1582 (Julian) was followed immediately by Friday, October 15, 1582 (Gregorian). 627 */ 628 if ($year <= 1582) { 629 if ($year < 1582 || 630 ($year == 1582 && ($month < 10 || ($month == 10 && $day < 15)))) $greg_correction = 3; 631 else 632 $greg_correction = 0; 633 } else 634 $greg_correction = 0; 635 636 if($month > 2) 637 $month -= 2; 638 else { 639 $month += 10; 640 $year--; 641 } 642 643 $day = floor((13 * $month - 1) / 5) + 644 $day + ($year % 100) + 645 floor(($year % 100) / 4) + 646 floor(($year / 100) / 4) - 2 * 647 floor($year / 100) + 77 + $greg_correction; 648 649 return $day - 7 * floor($day / 7); 650 } 651 652 653 /** 654 Checks for leap year, returns true if it is. No 2-digit year check. Also 655 handles julian calendar correctly. 656 */ 657 function _adodb_is_leap_year($year) 658 { 659 if ($year % 4 != 0) return false; 660 661 if ($year % 400 == 0) { 662 return true; 663 // if gregorian calendar (>1582), century not-divisible by 400 is not leap 664 } else if ($year > 1582 && $year % 100 == 0 ) { 665 return false; 666 } 667 668 return true; 669 } 670 671 672 /** 673 checks for leap year, returns true if it is. Has 2-digit year check 674 */ 675 function adodb_is_leap_year($year) 676 { 677 return _adodb_is_leap_year(adodb_year_digit_check($year)); 678 } 679 680 /** 681 Fix 2-digit years. Works for any century. 682 Assumes that if 2-digit is more than 30 years in future, then previous century. 683 */ 684 function adodb_year_digit_check($y) 685 { 686 if ($y < 100) { 687 688 $yr = (integer) date("Y"); 689 $century = (integer) ($yr /100); 690 691 if ($yr%100 > 50) { 692 $c1 = $century + 1; 693 $c0 = $century; 694 } else { 695 $c1 = $century; 696 $c0 = $century - 1; 697 } 698 $c1 *= 100; 699 // if 2-digit year is less than 30 years in future, set it to this century 700 // otherwise if more than 30 years in future, then we set 2-digit year to the prev century. 701 if (($y + $c1) < $yr+30) $y = $y + $c1; 702 else $y = $y + $c0*100; 703 } 704 return $y; 705 } 706 707 function adodb_get_gmt_diff_ts($ts) 708 { 709 if (0 <= $ts && $ts <= 0x7FFFFFFF) { // check if number in 32-bit signed range) { 710 $arr = getdate($ts); 711 $y = $arr['year']; 712 $m = $arr['mon']; 713 $d = $arr['mday']; 714 return adodb_get_gmt_diff($y,$m,$d); 715 } else { 716 return adodb_get_gmt_diff(false,false,false); 717 } 718 719 } 720 721 /** 722 get local time zone offset from GMT. Does not handle historical timezones before 1970. 723 */ 724 function adodb_get_gmt_diff($y,$m,$d) 725 { 726 static $TZ,$tzo; 727 728 if (!defined('ADODB_TEST_DATES')) $y = false; 729 else if ($y < 1970 || $y >= 2038) $y = false; 730 731 if ($y !== false) { 732 $dt = new DateTime(); 733 $dt->setISODate($y,$m,$d); 734 if (empty($tzo)) { 735 $tzo = new DateTimeZone(date_default_timezone_get()); 736 # $tzt = timezone_transitions_get( $tzo ); 737 } 738 return -$tzo->getOffset($dt); 739 } else { 740 if (isset($TZ)) return $TZ; 741 $y = date('Y'); 742 /* 743 if (function_exists('date_default_timezone_get') && function_exists('timezone_offset_get')) { 744 $tzonename = date_default_timezone_get(); 745 if ($tzonename) { 746 $tobj = new DateTimeZone($tzonename); 747 $TZ = -timezone_offset_get($tobj,new DateTime("now",$tzo)); 748 } 749 } 750 */ 751 if (empty($TZ)) $TZ = mktime(0,0,0,12,2,$y) - gmmktime(0,0,0,12,2,$y); 752 } 753 return $TZ; 754 } 755 756 /** 757 Returns an array with date info. 758 */ 759 function adodb_getdate($d=false,$fast=false) 760 { 761 if ($d === false) return getdate(); 762 if (!defined('ADODB_TEST_DATES')) { 763 if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range 764 if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer 765 return @getdate($d); 766 } 767 } 768 return _adodb_getdate($d); 769 } 770 771 /* 772 // generate $YRS table for _adodb_getdate() 773 function adodb_date_gentable($out=true) 774 { 775 776 for ($i=1970; $i >= 1600; $i-=10) { 777 $s = adodb_gmmktime(0,0,0,1,1,$i); 778 echo "$i => $s,<br>"; 779 } 780 } 781 adodb_date_gentable(); 782 783 for ($i=1970; $i > 1500; $i--) { 784 785 echo "<hr />$i "; 786 adodb_date_test_date($i,1,1); 787 } 788 789 */ 790 791 792 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 793 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 794 795 function adodb_validdate($y,$m,$d) 796 { 797 global $_month_table_normal,$_month_table_leaf; 798 799 if (_adodb_is_leap_year($y)) $marr = $_month_table_leaf; 800 else $marr = $_month_table_normal; 801 802 if ($m > 12 || $m < 1) return false; 803 804 if ($d > 31 || $d < 1) return false; 805 806 if ($marr[$m] < $d) return false; 807 808 if ($y < 1000 || $y > 3000) return false; 809 810 return true; 811 } 812 813 /** 814 Low-level function that returns the getdate() array. We have a special 815 $fast flag, which if set to true, will return fewer array values, 816 and is much faster as it does not calculate dow, etc. 817 */ 818 function _adodb_getdate($origd=false,$fast=false,$is_gmt=false) 819 { 820 static $YRS; 821 global $_month_table_normal,$_month_table_leaf, $_adodb_last_date_call_failed; 822 823 $_adodb_last_date_call_failed = false; 824 825 $d = $origd - ($is_gmt ? 0 : adodb_get_gmt_diff_ts($origd)); 826 $_day_power = 86400; 827 $_hour_power = 3600; 828 $_min_power = 60; 829 830 $cutoffDate = time() + (60 * 60 * 24 * 365 * ADODB_FUTURE_DATE_CUTOFF_YEARS); 831 832 if ($d > $cutoffDate) 833 { 834 $d = $cutoffDate; 835 $_adodb_last_date_call_failed = true; 836 } 837 838 if ($d < -12219321600) $d -= 86400*10; // if 15 Oct 1582 or earlier, gregorian correction 839 840 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 841 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 842 843 $d366 = $_day_power * 366; 844 $d365 = $_day_power * 365; 845 846 if ($d < 0) { 847 848 if (empty($YRS)) $YRS = array( 849 1970 => 0, 850 1960 => -315619200, 851 1950 => -631152000, 852 1940 => -946771200, 853 1930 => -1262304000, 854 1920 => -1577923200, 855 1910 => -1893456000, 856 1900 => -2208988800, 857 1890 => -2524521600, 858 1880 => -2840140800, 859 1870 => -3155673600, 860 1860 => -3471292800, 861 1850 => -3786825600, 862 1840 => -4102444800, 863 1830 => -4417977600, 864 1820 => -4733596800, 865 1810 => -5049129600, 866 1800 => -5364662400, 867 1790 => -5680195200, 868 1780 => -5995814400, 869 1770 => -6311347200, 870 1760 => -6626966400, 871 1750 => -6942499200, 872 1740 => -7258118400, 873 1730 => -7573651200, 874 1720 => -7889270400, 875 1710 => -8204803200, 876 1700 => -8520336000, 877 1690 => -8835868800, 878 1680 => -9151488000, 879 1670 => -9467020800, 880 1660 => -9782640000, 881 1650 => -10098172800, 882 1640 => -10413792000, 883 1630 => -10729324800, 884 1620 => -11044944000, 885 1610 => -11360476800, 886 1600 => -11676096000); 887 888 if ($is_gmt) $origd = $d; 889 // The valid range of a 32bit signed timestamp is typically from 890 // Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT 891 // 892 893 # old algorithm iterates through all years. new algorithm does it in 894 # 10 year blocks 895 896 /* 897 # old algo 898 for ($a = 1970 ; --$a >= 0;) { 899 $lastd = $d; 900 901 if ($leaf = _adodb_is_leap_year($a)) $d += $d366; 902 else $d += $d365; 903 904 if ($d >= 0) { 905 $year = $a; 906 break; 907 } 908 } 909 */ 910 911 $lastsecs = 0; 912 $lastyear = 1970; 913 foreach($YRS as $year => $secs) { 914 if ($d >= $secs) { 915 $a = $lastyear; 916 break; 917 } 918 $lastsecs = $secs; 919 $lastyear = $year; 920 } 921 922 $d -= $lastsecs; 923 if (!isset($a)) $a = $lastyear; 924 925 //echo ' yr=',$a,' ', $d,'.'; 926 927 for (; --$a >= 0;) { 928 $lastd = $d; 929 930 if ($leaf = _adodb_is_leap_year($a)) $d += $d366; 931 else $d += $d365; 932 933 if ($d >= 0) { 934 $year = $a; 935 break; 936 } 937 } 938 /**/ 939 940 $secsInYear = 86400 * ($leaf ? 366 : 365) + $lastd; 941 942 $d = $lastd; 943 $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal; 944 for ($a = 13 ; --$a > 0;) { 945 $lastd = $d; 946 $d += $mtab[$a] * $_day_power; 947 if ($d >= 0) { 948 $month = $a; 949 $ndays = $mtab[$a]; 950 break; 951 } 952 } 953 954 $d = $lastd; 955 $day = $ndays + ceil(($d+1) / ($_day_power)); 956 957 $d += ($ndays - $day+1)* $_day_power; 958 $hour = floor($d/$_hour_power); 959 960 } else { 961 for ($a = 1970 ;; $a++) { 962 $lastd = $d; 963 964 if ($leaf = _adodb_is_leap_year($a)) $d -= $d366; 965 else $d -= $d365; 966 if ($d < 0) { 967 $year = $a; 968 break; 969 } 970 } 971 $secsInYear = $lastd; 972 $d = $lastd; 973 $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal; 974 for ($a = 1 ; $a <= 12; $a++) { 975 $lastd = $d; 976 $d -= $mtab[$a] * $_day_power; 977 if ($d < 0) { 978 $month = $a; 979 $ndays = $mtab[$a]; 980 break; 981 } 982 } 983 $d = $lastd; 984 $day = ceil(($d+1) / $_day_power); 985 $d = $d - ($day-1) * $_day_power; 986 $hour = floor($d /$_hour_power); 987 } 988 989 $d -= $hour * $_hour_power; 990 $min = floor($d/$_min_power); 991 $secs = $d - $min * $_min_power; 992 if ($fast) { 993 return array( 994 'seconds' => $secs, 995 'minutes' => $min, 996 'hours' => $hour, 997 'mday' => $day, 998 'mon' => $month, 999 'year' => $year, 1000 'yday' => floor($secsInYear/$_day_power), 1001 'leap' => $leaf, 1002 'ndays' => $ndays 1003 ); 1004 } 1005 1006 1007 $dow = adodb_dow($year,$month,$day); 1008 1009 return array( 1010 'seconds' => $secs, 1011 'minutes' => $min, 1012 'hours' => $hour, 1013 'mday' => $day, 1014 'wday' => $dow, 1015 'mon' => $month, 1016 'year' => $year, 1017 'yday' => floor($secsInYear/$_day_power), 1018 'weekday' => gmdate('l',$_day_power*(3+$dow)), 1019 'month' => gmdate('F',mktime(0,0,0,$month,2,1971)), 1020 0 => $origd 1021 ); 1022 } 1023 1024 /** 1025 * Compute timezone offset. 1026 * 1027 * @param int $gmt Time offset from GMT, in seconds 1028 * @param bool $ignored Param leftover from removed PHP4-compatibility code 1029 * kept to avoid altering function signature. 1030 * @return string 1031 */ 1032 function adodb_tz_offset($gmt, $ignored=true) 1033 { 1034 $zhrs = abs($gmt) / 3600; 1035 $hrs = floor($zhrs); 1036 return sprintf('%s%02d%02d', ($gmt <= 0) ? '+' : '-', $hrs, ($zhrs - $hrs) * 60); 1037 } 1038 1039 1040 function adodb_gmdate($fmt,$d=false) 1041 { 1042 return adodb_date($fmt,$d,true); 1043 } 1044 1045 // accepts unix timestamp and iso date format in $d 1046 function adodb_date2($fmt, $d=false, $is_gmt=false) 1047 { 1048 if ($d !== false) { 1049 if (!preg_match( 1050 "|^([0-9]{4})[-/\.]?([0-9]{1,2})[-/\.]?([0-9]{1,2})[ -]?(([0-9]{1,2}):?([0-9]{1,2}):?([0-9\.]{1,4}))?|", 1051 ($d), $rr)) return adodb_date($fmt,false,$is_gmt); 1052 1053 if ($rr[1] <= 100 && $rr[2]<= 1) return adodb_date($fmt,false,$is_gmt); 1054 1055 // h-m-s-MM-DD-YY 1056 if (!isset($rr[5])) $d = adodb_mktime(0,0,0,$rr[2],$rr[3],$rr[1],false,$is_gmt); 1057 else $d = @adodb_mktime($rr[5],$rr[6],$rr[7],$rr[2],$rr[3],$rr[1],false,$is_gmt); 1058 } 1059 1060 return adodb_date($fmt,$d,$is_gmt); 1061 } 1062 1063 1064 /** 1065 Return formatted date based on timestamp $d 1066 */ 1067 function adodb_date($fmt,$d=false,$is_gmt=false) 1068 { 1069 static $daylight; 1070 static $jan1_1971; 1071 1072 if (!isset($daylight)) { 1073 $daylight = function_exists('adodb_daylight_sv'); 1074 if (empty($jan1_1971)) $jan1_1971 = mktime(0,0,0,1,1,1971); // we only use date() when > 1970 as adodb_mktime() only uses mktime() when > 1970 1075 } 1076 1077 if ($d === false) return ($is_gmt)? @gmdate($fmt): @date($fmt); 1078 if (!defined('ADODB_TEST_DATES')) { 1079 1080 /* 1081 * Format 'Q' is an ADOdb custom format, not supported in PHP 1082 * so if there is a 'Q' in the format, we force it to use our 1083 * function. There is a trivial overhead in this 1084 */ 1085 1086 if ((abs($d) <= 0x7FFFFFFF) && strpos($fmt,'Q') === false) 1087 { // check if number in 32-bit signed range 1088 1089 if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= $jan1_1971) // if windows, must be +ve integer 1090 return ($is_gmt)? @gmdate($fmt,$d): @date($fmt,$d); 1091 1092 } 1093 } 1094 $_day_power = 86400; 1095 1096 $arr = _adodb_getdate($d,true,$is_gmt); 1097 1098 if ($daylight) adodb_daylight_sv($arr, $is_gmt); 1099 1100 $year = $arr['year']; 1101 $month = $arr['mon']; 1102 $day = $arr['mday']; 1103 $hour = $arr['hours']; 1104 $min = $arr['minutes']; 1105 $secs = $arr['seconds']; 1106 1107 $max = strlen($fmt); 1108 $dates = ''; 1109 1110 /* 1111 at this point, we have the following integer vars to manipulate: 1112 $year, $month, $day, $hour, $min, $secs 1113 */ 1114 for ($i=0; $i < $max; $i++) { 1115 switch($fmt[$i]) { 1116 case 'e': 1117 $dates .= date('e'); 1118 break; 1119 case 'T': 1120 $dt = new DateTime(); 1121 $dt->SetDate($year,$month,$day); 1122 $dates .= $dt->Format('T'); 1123 break; 1124 // YEAR 1125 case 'L': $dates .= $arr['leap'] ? '1' : '0'; break; 1126 case 'r': // Thu, 21 Dec 2000 16:01:07 +0200 1127 1128 // 4.3.11 uses '04 Jun 2004' 1129 // 4.3.8 uses ' 4 Jun 2004' 1130 $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))).', ' 1131 . ($day<10?'0'.$day:$day) . ' '.date('M',mktime(0,0,0,$month,2,1971)).' '.$year.' '; 1132 1133 if ($hour < 10) $dates .= '0'.$hour; else $dates .= $hour; 1134 1135 if ($min < 10) $dates .= ':0'.$min; else $dates .= ':'.$min; 1136 1137 if ($secs < 10) $dates .= ':0'.$secs; else $dates .= ':'.$secs; 1138 1139 $gmt = adodb_get_gmt_diff($year,$month,$day); 1140 1141 $dates .= ' '.adodb_tz_offset($gmt); 1142 break; 1143 1144 case 'Y': $dates .= $year; break; 1145 case 'y': $dates .= substr($year,strlen($year)-2,2); break; 1146 // MONTH 1147 case 'm': if ($month<10) $dates .= '0'.$month; else $dates .= $month; break; 1148 case 'Q': 1149 $dates .= ceil($month / 3); 1150 break; 1151 case 'n': $dates .= $month; break; 1152 case 'M': $dates .= date('M',mktime(0,0,0,$month,2,1971)); break; 1153 case 'F': $dates .= date('F',mktime(0,0,0,$month,2,1971)); break; 1154 // DAY 1155 case 't': $dates .= $arr['ndays']; break; 1156 case 'z': $dates .= $arr['yday']; break; 1157 case 'w': $dates .= adodb_dow($year,$month,$day); break; 1158 case 'W': 1159 $dates .= sprintf('%02d',ceil( $arr['yday'] / 7) - 1); 1160 break; 1161 case 'l': $dates .= gmdate('l',$_day_power*(3+adodb_dow($year,$month,$day))); break; 1162 case 'D': $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))); break; 1163 case 'j': $dates .= $day; break; 1164 case 'd': if ($day<10) $dates .= '0'.$day; else $dates .= $day; break; 1165 case 'S': 1166 $d10 = $day % 10; 1167 if ($d10 == 1) $dates .= 'st'; 1168 else if ($d10 == 2 && $day != 12) $dates .= 'nd'; 1169 else if ($d10 == 3) $dates .= 'rd'; 1170 else $dates .= 'th'; 1171 break; 1172 1173 // HOUR 1174 case 'Z': 1175 $dates .= ($is_gmt) ? 0 : -adodb_get_gmt_diff($year,$month,$day); break; 1176 case 'O': 1177 $gmt = ($is_gmt) ? 0 : adodb_get_gmt_diff($year,$month,$day); 1178 1179 $dates .= adodb_tz_offset($gmt); 1180 break; 1181 1182 case 'H': 1183 if ($hour < 10) $dates .= '0'.$hour; 1184 else $dates .= $hour; 1185 break; 1186 case 'h': 1187 if ($hour > 12) $hh = $hour - 12; 1188 else { 1189 if ($hour == 0) $hh = '12'; 1190 else $hh = $hour; 1191 } 1192 1193 if ($hh < 10) $dates .= '0'.$hh; 1194 else $dates .= $hh; 1195 break; 1196 1197 case 'G': 1198 $dates .= $hour; 1199 break; 1200 1201 case 'g': 1202 if ($hour > 12) $hh = $hour - 12; 1203 else { 1204 if ($hour == 0) $hh = '12'; 1205 else $hh = $hour; 1206 } 1207 $dates .= $hh; 1208 break; 1209 // MINUTES 1210 case 'i': if ($min < 10) $dates .= '0'.$min; else $dates .= $min; break; 1211 // SECONDS 1212 case 'U': $dates .= $d; break; 1213 case 's': if ($secs < 10) $dates .= '0'.$secs; else $dates .= $secs; break; 1214 // AM/PM 1215 // Note 00:00 to 11:59 is AM, while 12:00 to 23:59 is PM 1216 case 'a': 1217 if ($hour>=12) $dates .= 'pm'; 1218 else $dates .= 'am'; 1219 break; 1220 case 'A': 1221 if ($hour>=12) $dates .= 'PM'; 1222 else $dates .= 'AM'; 1223 break; 1224 default: 1225 $dates .= $fmt[$i]; break; 1226 // ESCAPE 1227 case "\\": 1228 $i++; 1229 if ($i < $max) $dates .= $fmt[$i]; 1230 break; 1231 } 1232 } 1233 return $dates; 1234 } 1235 1236 /** 1237 Returns a timestamp given a GMT/UTC time. 1238 Note that $is_dst is not implemented and is ignored. 1239 */ 1240 function adodb_gmmktime($hr,$min,$sec,$mon=false,$day=false,$year=false,$is_dst=false) 1241 { 1242 return adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst,true); 1243 } 1244 1245 /** 1246 Return a timestamp given a local time. Originally by jackbbs. 1247 Note that $is_dst is not implemented and is ignored. 1248 1249 Not a very fast algorithm - O(n) operation. Could be optimized to O(1). 1250 */ 1251 function adodb_mktime($hr,$min,$sec,$mon=false,$day=false,$year=false,$is_dst=false,$is_gmt=false) 1252 { 1253 if (!defined('ADODB_TEST_DATES')) { 1254 1255 if ($mon === false) { 1256 return $is_gmt? @gmmktime($hr,$min,$sec): @mktime($hr,$min,$sec); 1257 } 1258 1259 // for windows, we don't check 1970 because with timezone differences, 1260 // 1 Jan 1970 could generate negative timestamp, which is illegal 1261 $usephpfns = (1970 < $year && $year < 2038 1262 || !defined('ADODB_NO_NEGATIVE_TS') && (1901 < $year && $year < 2038) 1263 ); 1264 1265 1266 if ($usephpfns && ($year + $mon/12+$day/365.25+$hr/(24*365.25) >= 2038)) $usephpfns = false; 1267 1268 if ($usephpfns) { 1269 return $is_gmt ? 1270 @gmmktime($hr,$min,$sec,$mon,$day,$year): 1271 @mktime($hr,$min,$sec,$mon,$day,$year); 1272 } 1273 } 1274 1275 $gmt_different = ($is_gmt) ? 0 : adodb_get_gmt_diff($year,$mon,$day); 1276 1277 /* 1278 # disabled because some people place large values in $sec. 1279 # however we need it for $mon because we use an array... 1280 $hr = intval($hr); 1281 $min = intval($min); 1282 $sec = intval($sec); 1283 */ 1284 $mon = intval($mon); 1285 $day = intval($day); 1286 $year = intval($year); 1287 1288 1289 $year = adodb_year_digit_check($year); 1290 1291 if ($mon > 12) { 1292 $y = floor(($mon-1)/ 12); 1293 $year += $y; 1294 $mon -= $y*12; 1295 } else if ($mon < 1) { 1296 $y = ceil((1-$mon) / 12); 1297 $year -= $y; 1298 $mon += $y*12; 1299 } 1300 1301 $_day_power = 86400; 1302 $_hour_power = 3600; 1303 $_min_power = 60; 1304 1305 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 1306 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 1307 1308 $_total_date = 0; 1309 if ($year >= 1970) { 1310 for ($a = 1970 ; $a <= $year; $a++) { 1311 $leaf = _adodb_is_leap_year($a); 1312 if ($leaf == true) { 1313 $loop_table = $_month_table_leaf; 1314 $_add_date = 366; 1315 } else { 1316 $loop_table = $_month_table_normal; 1317 $_add_date = 365; 1318 } 1319 if ($a < $year) { 1320 $_total_date += $_add_date; 1321 } else { 1322 for($b=1;$b<$mon;$b++) { 1323 $_total_date += $loop_table[$b]; 1324 } 1325 } 1326 } 1327 $_total_date +=$day-1; 1328 $ret = $_total_date * $_day_power + $hr * $_hour_power + $min * $_min_power + $sec + $gmt_different; 1329 1330 } else { 1331 for ($a = 1969 ; $a >= $year; $a--) { 1332 $leaf = _adodb_is_leap_year($a); 1333 if ($leaf == true) { 1334 $loop_table = $_month_table_leaf; 1335 $_add_date = 366; 1336 } else { 1337 $loop_table = $_month_table_normal; 1338 $_add_date = 365; 1339 } 1340 if ($a > $year) { $_total_date += $_add_date; 1341 } else { 1342 for($b=12;$b>$mon;$b--) { 1343 $_total_date += $loop_table[$b]; 1344 } 1345 } 1346 } 1347 $_total_date += $loop_table[$mon] - $day; 1348 1349 $_day_time = $hr * $_hour_power + $min * $_min_power + $sec; 1350 $_day_time = $_day_power - $_day_time; 1351 $ret = -( $_total_date * $_day_power + $_day_time - $gmt_different); 1352 if ($ret < -12220185600) $ret += 10*86400; // if earlier than 5 Oct 1582 - gregorian correction 1353 else if ($ret < -12219321600) $ret = -12219321600; // if in limbo, reset to 15 Oct 1582. 1354 } 1355 //print " dmy=$day/$mon/$year $hr:$min:$sec => " .$ret; 1356 return $ret; 1357 } 1358 1359 function adodb_gmstrftime($fmt, $ts=false) 1360 { 1361 return adodb_strftime($fmt,$ts,true); 1362 } 1363 1364 // hack - convert to adodb_date 1365 function adodb_strftime($fmt, $ts=false,$is_gmt=false) 1366 { 1367 global $ADODB_DATE_LOCALE; 1368 1369 if (!defined('ADODB_TEST_DATES')) { 1370 if ((abs($ts) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range 1371 if (!defined('ADODB_NO_NEGATIVE_TS') || $ts >= 0) // if windows, must be +ve integer 1372 return ($is_gmt)? @gmstrftime($fmt,$ts): @strftime($fmt,$ts); 1373 1374 } 1375 } 1376 1377 if (empty($ADODB_DATE_LOCALE)) { 1378 /* 1379 $tstr = strtoupper(gmstrftime('%c',31366800)); // 30 Dec 1970, 1 am 1380 $sep = substr($tstr,2,1); 1381 $hasAM = strrpos($tstr,'M') !== false; 1382 */ 1383 # see PHPLens Issue No: 14865 for reasoning, and changelog for version 0.24 1384 $dstr = gmstrftime('%x',31366800); // 30 Dec 1970, 1 am 1385 $sep = substr($dstr,2,1); 1386 $tstr = strtoupper(gmstrftime('%X',31366800)); // 30 Dec 1970, 1 am 1387 $hasAM = strrpos($tstr,'M') !== false; 1388 1389 $ADODB_DATE_LOCALE = array(); 1390 $ADODB_DATE_LOCALE[] = strncmp($tstr,'30',2) == 0 ? 'd'.$sep.'m'.$sep.'y' : 'm'.$sep.'d'.$sep.'y'; 1391 $ADODB_DATE_LOCALE[] = ($hasAM) ? 'h:i:s a' : 'H:i:s'; 1392 1393 } 1394 $inpct = false; 1395 $fmtdate = ''; 1396 for ($i=0,$max = strlen($fmt); $i < $max; $i++) { 1397 $ch = $fmt[$i]; 1398 if ($ch == '%') { 1399 if ($inpct) { 1400 $fmtdate .= '%'; 1401 $inpct = false; 1402 } else 1403 $inpct = true; 1404 } else if ($inpct) { 1405 1406 $inpct = false; 1407 switch($ch) { 1408 case '0': 1409 case '1': 1410 case '2': 1411 case '3': 1412 case '4': 1413 case '5': 1414 case '6': 1415 case '7': 1416 case '8': 1417 case '9': 1418 case 'E': 1419 case 'O': 1420 /* ignore format modifiers */ 1421 $inpct = true; 1422 break; 1423 1424 case 'a': $fmtdate .= 'D'; break; 1425 case 'A': $fmtdate .= 'l'; break; 1426 case 'h': 1427 case 'b': $fmtdate .= 'M'; break; 1428 case 'B': $fmtdate .= 'F'; break; 1429 case 'c': $fmtdate .= $ADODB_DATE_LOCALE[0].$ADODB_DATE_LOCALE[1]; break; 1430 case 'C': $fmtdate .= '\C?'; break; // century 1431 case 'd': $fmtdate .= 'd'; break; 1432 case 'D': $fmtdate .= 'm/d/y'; break; 1433 case 'e': $fmtdate .= 'j'; break; 1434 case 'g': $fmtdate .= '\g?'; break; //? 1435 case 'G': $fmtdate .= '\G?'; break; //? 1436 case 'H': $fmtdate .= 'H'; break; 1437 case 'I': $fmtdate .= 'h'; break; 1438 case 'j': $fmtdate .= '?z'; $parsej = true; break; // wrong as j=1-based, z=0-basd 1439 case 'm': $fmtdate .= 'm'; break; 1440 case 'M': $fmtdate .= 'i'; break; 1441 case 'n': $fmtdate .= "\n"; break; 1442 case 'p': $fmtdate .= 'a'; break; 1443 case 'r': $fmtdate .= 'h:i:s a'; break; 1444 case 'R': $fmtdate .= 'H:i:s'; break; 1445 case 'S': $fmtdate .= 's'; break; 1446 case 't': $fmtdate .= "\t"; break; 1447 case 'T': $fmtdate .= 'H:i:s'; break; 1448 case 'u': $fmtdate .= '?u'; $parseu = true; break; // wrong strftime=1-based, date=0-based 1449 case 'U': $fmtdate .= '?U'; $parseU = true; break;// wrong strftime=1-based, date=0-based 1450 case 'x': $fmtdate .= $ADODB_DATE_LOCALE[0]; break; 1451 case 'X': $fmtdate .= $ADODB_DATE_LOCALE[1]; break; 1452 case 'w': $fmtdate .= '?w'; $parseu = true; break; // wrong strftime=1-based, date=0-based 1453 case 'W': $fmtdate .= '?W'; $parseU = true; break;// wrong strftime=1-based, date=0-based 1454 case 'y': $fmtdate .= 'y'; break; 1455 case 'Y': $fmtdate .= 'Y'; break; 1456 case 'Z': $fmtdate .= 'T'; break; 1457 } 1458 } else if (('A' <= ($ch) && ($ch) <= 'Z' ) || ('a' <= ($ch) && ($ch) <= 'z' )) 1459 $fmtdate .= "\\".$ch; 1460 else 1461 $fmtdate .= $ch; 1462 } 1463 //echo "fmt=",$fmtdate,"<br>"; 1464 if ($ts === false) $ts = time(); 1465 $ret = adodb_date($fmtdate, $ts, $is_gmt); 1466 return $ret; 1467 } 1468 1469 /** 1470 * Returns the status of the last date calculation and whether it exceeds 1471 * the limit of ADODB_FUTURE_DATE_CUTOFF_YEARS 1472 * 1473 * @return boolean 1474 */ 1475 function adodb_last_date_status() 1476 { 1477 global $_adodb_last_date_call_failed; 1478 1479 return $_adodb_last_date_call_failed; 1480 }
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