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1 <?php 2 /** This file is distributed with MyBB under the BSD License package and modified to work with MyBB **/ 3 4 /** 5 ADOdb Date Library, part of the ADOdb abstraction library 6 Download: http://phplens.com/phpeverywhere/ 7 8 PHP native date functions use integer timestamps for computations. 9 Because of this, dates are restricted to the years 1901-2038 on Unix 10 and 1970-2038 on Windows due to integer overflow for dates beyond 11 those years. This library overcomes these limitations by replacing the 12 native function's signed integers (normally 32-bits) with PHP floating 13 point numbers (normally 64-bits). 14 15 Dates from 100 A.D. to 3000 A.D. and later 16 have been tested. The minimum is 100 A.D. as <100 will invoke the 17 2 => 4 digit year conversion. The maximum is billions of years in the 18 future, but this is a theoretical limit as the computation of that year 19 would take too long with the current implementation of adodb_mktime(). 20 21 This library replaces native functions as follows: 22 23 <pre> 24 getdate() with adodb_getdate() 25 date() with adodb_date() 26 gmdate() with adodb_gmdate() 27 mktime() with adodb_mktime() 28 gmmktime() with adodb_gmmktime() 29 strftime() with adodb_strftime() 30 strftime() with adodb_gmstrftime() 31 </pre> 32 33 The parameters are identical, except that adodb_date() accepts a subset 34 of date()'s field formats. Mktime() will convert from local time to GMT, 35 and date() will convert from GMT to local time, but daylight savings is 36 not handled currently. 37 38 This library is independant of the rest of ADOdb, and can be used 39 as standalone code. 40 41 PERFORMANCE 42 43 For high speed, this library uses the native date functions where 44 possible, and only switches to PHP code when the dates fall outside 45 the 32-bit signed integer range. 46 47 GREGORIAN CORRECTION 48 49 Pope Gregory shortened October of A.D. 1582 by ten days. Thursday, 50 October 4, 1582 (Julian) was followed immediately by Friday, October 15, 51 1582 (Gregorian). 52 53 Since 0.06, we handle this correctly, so: 54 55 adodb_mktime(0,0,0,10,15,1582) - adodb_mktime(0,0,0,10,4,1582) 56 == 24 * 3600 (1 day) 57 58 ============================================================================= 59 60 COPYRIGHT 61 62 (c) 2003-2005 John Lim and released under BSD-style license except for code by 63 jackbbs, which includes adodb_mktime, adodb_get_gmt_diff, adodb_is_leap_year 64 and originally found at http://www.php.net/manual/en/function.mktime.php 65 66 ============================================================================= 67 68 BUG REPORTS 69 70 These should be posted to the ADOdb forums at 71 72 http://phplens.com/lens/lensforum/topics.php?id=4 73 74 ============================================================================= 75 */ 76 77 78 /* Initialization */ 79 80 /* 81 Version Number 82 */ 83 define('ADODB_DATE_VERSION', 0.33); 84 85 $ADODB_DATETIME_CLASS = (PHP_VERSION >= 5.2); 86 87 /* 88 This code was originally for windows. But apparently this problem happens 89 also with Linux, RH 7.3 and later! 90 91 glibc-2.2.5-34 and greater has been changed to return -1 for dates < 92 1970. This used to work. The problem exists with RedHat 7.3 and 8.0 93 echo (mktime(0, 0, 0, 1, 1, 1960)); // prints -1 94 95 References: 96 http://bugs.php.net/bug.php?id=20048&edit=2 97 http://lists.debian.org/debian-glibc/2002/debian-glibc-200205/msg00010.html 98 */ 99 100 if (!defined('ADODB_ALLOW_NEGATIVE_TS')) define('ADODB_NO_NEGATIVE_TS',1); 101 102 /** 103 Returns day of week, 0 = Sunday,... 6=Saturday. 104 Algorithm from PEAR::Date_Calc 105 */ 106 function adodb_dow($year, $month, $day) 107 { 108 /* 109 Pope Gregory removed 10 days - October 5 to October 14 - from the year 1582 and 110 proclaimed that from that time onwards 3 days would be dropped from the calendar 111 every 400 years. 112 113 Thursday, October 4, 1582 (Julian) was followed immediately by Friday, October 15, 1582 (Gregorian). 114 */ 115 if ($year <= 1582) { 116 if ($year < 1582 || 117 ($year == 1582 && ($month < 10 || ($month == 10 && $day < 15)))) $greg_correction = 3; 118 else 119 $greg_correction = 0; 120 } else 121 $greg_correction = 0; 122 123 if($month > 2) 124 $month -= 2; 125 else { 126 $month += 10; 127 $year--; 128 } 129 130 $day = floor((13 * $month - 1) / 5) + 131 $day + ($year % 100) + 132 floor(($year % 100) / 4) + 133 floor(($year / 100) / 4) - 2 * 134 floor($year / 100) + 77 + $greg_correction; 135 136 return $day - 7 * floor($day / 7); 137 } 138 139 /** 140 Checks for leap year, returns true if it is. No 2-digit year check. Also 141 handles julian calendar correctly. 142 */ 143 function _adodb_is_leap_year($year) 144 { 145 if ($year % 4 != 0) return false; 146 147 if ($year % 400 == 0) { 148 return true; 149 // if gregorian calendar (>1582), century not-divisible by 400 is not leap 150 } else if ($year > 1582 && $year % 100 == 0 ) { 151 return false; 152 } 153 154 return true; 155 } 156 157 /** 158 checks for leap year, returns true if it is. Has 2-digit year check 159 */ 160 function adodb_is_leap_year($year) 161 { 162 return _adodb_is_leap_year(adodb_year_digit_check($year)); 163 } 164 165 /** 166 Fix 2-digit years. Works for any century. 167 Assumes that if 2-digit is more than 30 years in future, then previous century. 168 */ 169 function adodb_year_digit_check($y) 170 { 171 if ($y < 100) { 172 173 $yr = (integer) date("Y"); 174 $century = (integer) ($yr /100); 175 176 if ($yr%100 > 50) { 177 $c1 = $century + 1; 178 $c0 = $century; 179 } else { 180 $c1 = $century; 181 $c0 = $century - 1; 182 } 183 $c1 *= 100; 184 // if 2-digit year is less than 30 years in future, set it to this century 185 // otherwise if more than 30 years in future, then we set 2-digit year to the prev century. 186 if (($y + $c1) < $yr+30) $y = $y + $c1; 187 else $y = $y + $c0*100; 188 } 189 return $y; 190 } 191 192 function adodb_get_gmt_diff_ts($ts) 193 { 194 if (0 <= $ts && $ts <= 0x7FFFFFFF) { // check if number in 32-bit signed range) { 195 $arr = getdate($ts); 196 $y = $arr['year']; 197 $m = $arr['mon']; 198 $d = $arr['mday']; 199 return adodb_get_gmt_diff($y,$m,$d); 200 } else { 201 return adodb_get_gmt_diff(false,false,false); 202 } 203 204 } 205 206 /** 207 get local time zone offset from GMT. Does not handle historical timezones before 1970. 208 */ 209 function adodb_get_gmt_diff($y,$m,$d) 210 { 211 static $TZ,$tzo; 212 global $ADODB_DATETIME_CLASS; 213 214 if (!defined('ADODB_TEST_DATES')) $y = false; 215 else if ($y < 1970 || $y >= 2038) $y = false; 216 217 if ($ADODB_DATETIME_CLASS && $y !== false) { 218 $dt = new DateTime(); 219 $dt->setISODate($y,$m,$d); 220 if (empty($tzo)) { 221 $tzo = new DateTimeZone(date_default_timezone_get()); 222 # $tzt = timezone_transitions_get( $tzo ); 223 } 224 return -$tzo->getOffset($dt); 225 } else { 226 if (isset($TZ)) return $TZ; 227 $y = date('Y'); 228 $TZ = mktime(0,0,0,12,2,$y) - gmmktime(0,0,0,12,2,$y); 229 } 230 231 return $TZ; 232 } 233 234 /** 235 Returns an array with date info. 236 */ 237 function adodb_getdate($d=false,$fast=false) 238 { 239 if ($d === false) return getdate(); 240 if (!defined('ADODB_TEST_DATES')) { 241 if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range 242 if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer 243 return @getdate($d); 244 } 245 } 246 return _adodb_getdate($d); 247 } 248 249 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 250 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 251 252 /** 253 Low-level function that returns the getdate() array. We have a special 254 $fast flag, which if set to true, will return fewer array values, 255 and is much faster as it does not calculate dow, etc. 256 */ 257 function _adodb_getdate($origd=false,$fast=false,$is_gmt=false) 258 { 259 static $YRS; 260 global $_month_table_normal,$_month_table_leaf; 261 262 $d = $origd - ($is_gmt ? 0 : adodb_get_gmt_diff_ts($origd)); 263 $_day_power = 86400; 264 $_hour_power = 3600; 265 $_min_power = 60; 266 267 if ($d < -12219321600) $d -= 86400*10; // if 15 Oct 1582 or earlier, gregorian correction 268 269 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 270 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 271 272 $d366 = $_day_power * 366; 273 $d365 = $_day_power * 365; 274 275 if ($d < 0) { 276 277 if (empty($YRS)) $YRS = array( 278 1970 => 0, 279 1960 => -315619200, 280 1950 => -631152000, 281 1940 => -946771200, 282 1930 => -1262304000, 283 1920 => -1577923200, 284 1910 => -1893456000, 285 1900 => -2208988800, 286 1890 => -2524521600, 287 1880 => -2840140800, 288 1870 => -3155673600, 289 1860 => -3471292800, 290 1850 => -3786825600, 291 1840 => -4102444800, 292 1830 => -4417977600, 293 1820 => -4733596800, 294 1810 => -5049129600, 295 1800 => -5364662400, 296 1790 => -5680195200, 297 1780 => -5995814400, 298 1770 => -6311347200, 299 1760 => -6626966400, 300 1750 => -6942499200, 301 1740 => -7258118400, 302 1730 => -7573651200, 303 1720 => -7889270400, 304 1710 => -8204803200, 305 1700 => -8520336000, 306 1690 => -8835868800, 307 1680 => -9151488000, 308 1670 => -9467020800, 309 1660 => -9782640000, 310 1650 => -10098172800, 311 1640 => -10413792000, 312 1630 => -10729324800, 313 1620 => -11044944000, 314 1610 => -11360476800, 315 1600 => -11676096000); 316 317 if ($is_gmt) $origd = $d; 318 // The valid range of a 32bit signed timestamp is typically from 319 // Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT 320 // 321 322 # old algorithm iterates through all years. new algorithm does it in 323 # 10 year blocks 324 325 /* 326 # old algo 327 for ($a = 1970 ; --$a >= 0;) { 328 $lastd = $d; 329 330 if ($leaf = _adodb_is_leap_year($a)) $d += $d366; 331 else $d += $d365; 332 333 if ($d >= 0) { 334 $year = $a; 335 break; 336 } 337 } 338 */ 339 340 $lastsecs = 0; 341 $lastyear = 1970; 342 foreach($YRS as $year => $secs) { 343 if ($d >= $secs) { 344 $a = $lastyear; 345 break; 346 } 347 $lastsecs = $secs; 348 $lastyear = $year; 349 } 350 351 $d -= $lastsecs; 352 if (!isset($a)) $a = $lastyear; 353 354 //echo ' yr=',$a,' ', $d,'.'; 355 356 for (; --$a >= 0;) { 357 $lastd = $d; 358 359 if ($leaf = _adodb_is_leap_year($a)) $d += $d366; 360 else $d += $d365; 361 362 if ($d >= 0) { 363 $year = $a; 364 break; 365 } 366 } 367 /**/ 368 369 $secsInYear = 86400 * ($leaf ? 366 : 365) + $lastd; 370 371 $d = $lastd; 372 $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal; 373 for ($a = 13 ; --$a > 0;) { 374 $lastd = $d; 375 $d += $mtab[$a] * $_day_power; 376 if ($d >= 0) { 377 $month = $a; 378 $ndays = $mtab[$a]; 379 break; 380 } 381 } 382 383 $d = $lastd; 384 $day = $ndays + ceil(($d+1) / ($_day_power)); 385 386 $d += ($ndays - $day+1)* $_day_power; 387 $hour = floor($d/$_hour_power); 388 389 } else { 390 for ($a = 1970 ;; $a++) { 391 $lastd = $d; 392 393 if ($leaf = _adodb_is_leap_year($a)) $d -= $d366; 394 else $d -= $d365; 395 if ($d < 0) { 396 $year = $a; 397 break; 398 } 399 } 400 $secsInYear = $lastd; 401 $d = $lastd; 402 $mtab = ($leaf) ? $_month_table_leaf : $_month_table_normal; 403 for ($a = 1 ; $a <= 12; $a++) { 404 $lastd = $d; 405 $d -= $mtab[$a] * $_day_power; 406 if ($d < 0) { 407 $month = $a; 408 $ndays = $mtab[$a]; 409 break; 410 } 411 } 412 $d = $lastd; 413 $day = ceil(($d+1) / $_day_power); 414 $d = $d - ($day-1) * $_day_power; 415 $hour = floor($d /$_hour_power); 416 } 417 418 $d -= $hour * $_hour_power; 419 $min = floor($d/$_min_power); 420 $secs = $d - $min * $_min_power; 421 if ($fast) { 422 return array( 423 'seconds' => $secs, 424 'minutes' => $min, 425 'hours' => $hour, 426 'mday' => $day, 427 'mon' => $month, 428 'year' => $year, 429 'yday' => floor($secsInYear/$_day_power), 430 'leap' => $leaf, 431 'ndays' => $ndays 432 ); 433 } 434 435 $dow = adodb_dow($year,$month,$day); 436 437 return array( 438 'seconds' => $secs, 439 'minutes' => $min, 440 'hours' => $hour, 441 'mday' => $day, 442 'wday' => $dow, 443 'mon' => $month, 444 'year' => $year, 445 'yday' => floor($secsInYear/$_day_power), 446 'weekday' => gmdate('l',$_day_power*(3+$dow)), 447 'month' => gmdate('F',mktime(0,0,0,$month,2,1971)), 448 0 => $origd 449 ); 450 } 451 452 function adodb_tz_offset($gmt,$isphp5) 453 { 454 $zhrs = abs($gmt)/3600; 455 $hrs = floor($zhrs); 456 if ($isphp5) 457 return sprintf('%s%02d%02d',($gmt<=0)?'+':'-',floor($zhrs),($zhrs-$hrs)*60); 458 else 459 return sprintf('%s%02d%02d',($gmt<0)?'+':'-',floor($zhrs),($zhrs-$hrs)*60); 460 } 461 462 function adodb_gmdate($fmt,$d=false) 463 { 464 return adodb_date($fmt,$d,true); 465 } 466 467 // accepts unix timestamp and iso date format in $d 468 function adodb_date2($fmt, $d=false, $is_gmt=false) 469 { 470 if ($d !== false) { 471 if (!preg_match( 472 "|^([0-9]{4})[-/\.]?([0-9]{1,2})[-/\.]?([0-9]{1,2})[ -]?(([0-9]{1,2}):?([0-9]{1,2}):?([0-9\.]{1,4}))?|", 473 ($d), $rr)) return adodb_date($fmt,false,$is_gmt); 474 475 if ($rr[1] <= 100 && $rr[2]<= 1) return adodb_date($fmt,false,$is_gmt); 476 477 // h-m-s-MM-DD-YY 478 if (!isset($rr[5])) $d = adodb_mktime(0,0,0,$rr[2],$rr[3],$rr[1],false,$is_gmt); 479 else $d = @adodb_mktime($rr[5],$rr[6],$rr[7],$rr[2],$rr[3],$rr[1],false,$is_gmt); 480 } 481 482 return adodb_date($fmt,$d,$is_gmt); 483 } 484 485 /** 486 Return formatted date based on timestamp $d 487 */ 488 function adodb_date($fmt,$d=false,$is_gmt=false) 489 { 490 static $daylight; 491 global $ADODB_DATETIME_CLASS; 492 493 if ($d === false) return ($is_gmt)? @gmdate($fmt): @date($fmt); 494 if (!defined('ADODB_TEST_DATES')) { 495 if ((abs($d) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range 496 if (!defined('ADODB_NO_NEGATIVE_TS') || $d >= 0) // if windows, must be +ve integer 497 return ($is_gmt)? @gmdate($fmt,$d): @date($fmt,$d); 498 499 } 500 } 501 $_day_power = 86400; 502 503 $arr = _adodb_getdate($d,true,$is_gmt); 504 505 if (!isset($daylight)) $daylight = function_exists('adodb_daylight_sv'); 506 if ($daylight) adodb_daylight_sv($arr, $is_gmt); 507 508 $year = $arr['year']; 509 $month = $arr['mon']; 510 $day = $arr['mday']; 511 $hour = $arr['hours']; 512 $min = $arr['minutes']; 513 $secs = $arr['seconds']; 514 515 $max = strlen($fmt); 516 $dates = ''; 517 518 $isphp5 = PHP_VERSION >= 5; 519 520 /* 521 at this point, we have the following integer vars to manipulate: 522 $year, $month, $day, $hour, $min, $secs 523 */ 524 for ($i=0; $i < $max; $i++) { 525 switch($fmt[$i]) { 526 case 'T': 527 if ($ADODB_DATETIME_CLASS) { 528 $dt = new DateTime(); 529 $dt->SetDate($year,$month,$day); 530 $dates .= $dt->Format('T'); 531 } else 532 $dates .= date('T'); 533 break; 534 // YEAR 535 case 'L': $dates .= $arr['leap'] ? '1' : '0'; break; 536 case 'r': // Thu, 21 Dec 2000 16:01:07 +0200 537 538 // 4.3.11 uses '04 Jun 2004' 539 // 4.3.8 uses ' 4 Jun 2004' 540 $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))).', ' 541 . ($day<10?'0'.$day:$day) . ' '.date('M',mktime(0,0,0,$month,2,1971)).' '.$year.' '; 542 543 if ($hour < 10) $dates .= '0'.$hour; else $dates .= $hour; 544 545 if ($min < 10) $dates .= ':0'.$min; else $dates .= ':'.$min; 546 547 if ($secs < 10) $dates .= ':0'.$secs; else $dates .= ':'.$secs; 548 549 $gmt = adodb_get_gmt_diff($year,$month,$day); 550 551 $dates .= ' '.adodb_tz_offset($gmt,$isphp5); 552 break; 553 554 case 'Y': $dates .= $year; break; 555 case 'y': $dates .= substr($year,strlen($year)-2,2); break; 556 // MONTH 557 case 'm': if ($month<10) $dates .= '0'.$month; else $dates .= $month; break; 558 case 'Q': $dates .= ($month+3)>>2; break; 559 case 'n': $dates .= $month; break; 560 case 'M': $dates .= date('M',mktime(0,0,0,$month,2,1971)); break; 561 case 'F': $dates .= date('F',mktime(0,0,0,$month,2,1971)); break; 562 // DAY 563 case 't': $dates .= $arr['ndays']; break; 564 case 'z': $dates .= $arr['yday']; break; 565 case 'w': $dates .= adodb_dow($year,$month,$day); break; 566 case 'l': $dates .= gmdate('l',$_day_power*(3+adodb_dow($year,$month,$day))); break; 567 case 'D': $dates .= gmdate('D',$_day_power*(3+adodb_dow($year,$month,$day))); break; 568 case 'j': $dates .= $day; break; 569 case 'd': if ($day<10) $dates .= '0'.$day; else $dates .= $day; break; 570 case 'S': 571 $d10 = $day % 10; 572 if ($d10 == 1) $dates .= 'st'; 573 else if ($d10 == 2 && $day != 12) $dates .= 'nd'; 574 else if ($d10 == 3) $dates .= 'rd'; 575 else $dates .= 'th'; 576 break; 577 578 // HOUR 579 case 'Z': 580 $dates .= ($is_gmt) ? 0 : -adodb_get_gmt_diff($year,$month,$day); break; 581 case 'O': 582 $gmt = ($is_gmt) ? 0 : adodb_get_gmt_diff($year,$month,$day); 583 584 $dates .= adodb_tz_offset($gmt,$isphp5); 585 break; 586 587 case 'H': 588 if ($hour < 10) $dates .= '0'.$hour; 589 else $dates .= $hour; 590 break; 591 case 'h': 592 if ($hour > 12) $hh = $hour - 12; 593 else { 594 if ($hour == 0) $hh = '12'; 595 else $hh = $hour; 596 } 597 598 if ($hh < 10) $dates .= '0'.$hh; 599 else $dates .= $hh; 600 break; 601 602 case 'G': 603 $dates .= $hour; 604 break; 605 606 case 'g': 607 if ($hour > 12) $hh = $hour - 12; 608 else { 609 if ($hour == 0) $hh = '12'; 610 else $hh = $hour; 611 } 612 $dates .= $hh; 613 break; 614 // MINUTES 615 case 'i': if ($min < 10) $dates .= '0'.$min; else $dates .= $min; break; 616 // SECONDS 617 case 'U': $dates .= $d; break; 618 case 's': if ($secs < 10) $dates .= '0'.$secs; else $dates .= $secs; break; 619 // AM/PM 620 // Note 00:00 to 11:59 is AM, while 12:00 to 23:59 is PM 621 case 'a': 622 if ($hour>=12) $dates .= 'pm'; 623 else $dates .= 'am'; 624 break; 625 case 'A': 626 if ($hour>=12) $dates .= 'PM'; 627 else $dates .= 'AM'; 628 break; 629 default: 630 $dates .= $fmt[$i]; break; 631 // ESCAPE 632 case "\\": 633 $i++; 634 if ($i < $max) $dates .= $fmt[$i]; 635 break; 636 } 637 } 638 return $dates; 639 } 640 641 /** 642 Returns a timestamp given a GMT/UTC time. 643 Note that $is_dst is not implemented and is ignored. 644 */ 645 function adodb_gmmktime($hr,$min,$sec,$mon=false,$day=false,$year=false,$is_dst=false) 646 { 647 return adodb_mktime($hr,$min,$sec,$mon,$day,$year,$is_dst,true); 648 } 649 650 /** 651 Return a timestamp given a local time. Originally by jackbbs. 652 Note that $is_dst is not implemented and is ignored. 653 654 Not a very fast algorithm - O(n) operation. Could be optimized to O(1). 655 656 NOTE: returns time() when the year is > 9999 657 */ 658 function adodb_mktime($hr,$min,$sec,$mon=false,$day=false,$year=false,$is_dst=false,$is_gmt=false) 659 { 660 if (!defined('ADODB_TEST_DATES')) { 661 662 if ($mon === false) { 663 return $is_gmt? @gmmktime($hr,$min,$sec): @mktime($hr,$min,$sec); 664 } 665 666 // for windows, we don't check 1970 because with timezone differences, 667 // 1 Jan 1970 could generate negative timestamp, which is illegal 668 $usephpfns = (1971 < $year && $year < 2038 669 || !defined('ADODB_NO_NEGATIVE_TS') && (1901 < $year && $year < 2038) 670 ); 671 672 673 if ($usephpfns && ($year + $mon/12+$day/365.25+$hr/(24*365.25) >= 2038)) $usephpfns = false; 674 675 if ($usephpfns) { 676 return $is_gmt ? 677 @gmmktime($hr,$min,$sec,$mon,$day,$year): 678 @mktime($hr,$min,$sec,$mon,$day,$year); 679 } 680 } 681 682 $gmt_different = ($is_gmt) ? 0 : adodb_get_gmt_diff($year,$mon,$day); 683 684 /* 685 # disabled because some people place large values in $sec. 686 # however we need it for $mon because we use an array... 687 $hr = (int)$hr; 688 $min = (int)$min; 689 $sec = (int)$sec; 690 */ 691 $mon = (int)$mon; 692 $day = (int)$day; 693 $year = (int)$year; 694 695 696 $year = adodb_year_digit_check($year); 697 698 if ($mon > 12) { 699 $y = floor(($mon-1)/ 12); 700 $year += $y; 701 $mon -= $y*12; 702 } else if ($mon < 1) { 703 $y = ceil((1-$mon) / 12); 704 $year -= $y; 705 $mon += $y*12; 706 } 707 708 $_day_power = 86400; 709 $_hour_power = 3600; 710 $_min_power = 60; 711 712 $_month_table_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31); 713 $_month_table_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31); 714 715 $_total_date = 0; 716 if($year > 9999) { 717 return time(); 718 } else if ($year >= 1970) { 719 for ($a = 1970 ; $a <= $year; $a++) { 720 $leaf = _adodb_is_leap_year($a); 721 if ($leaf == true) { 722 $loop_table = $_month_table_leaf; 723 $_add_date = 366; 724 } else { 725 $loop_table = $_month_table_normal; 726 $_add_date = 365; 727 } 728 if ($a < $year) { 729 $_total_date += $_add_date; 730 } else { 731 for($b=1;$b<$mon;$b++) { 732 $_total_date += $loop_table[$b]; 733 } 734 } 735 } 736 $_total_date +=$day-1; 737 $ret = $_total_date * $_day_power + $hr * $_hour_power + $min * $_min_power + $sec + $gmt_different; 738 739 } else { 740 for ($a = 1969 ; $a >= $year; $a--) { 741 $leaf = _adodb_is_leap_year($a); 742 if ($leaf == true) { 743 $loop_table = $_month_table_leaf; 744 $_add_date = 366; 745 } else { 746 $loop_table = $_month_table_normal; 747 $_add_date = 365; 748 } 749 if ($a > $year) { $_total_date += $_add_date; 750 } else { 751 for($b=12;$b>$mon;$b--) { 752 $_total_date += $loop_table[$b]; 753 } 754 } 755 } 756 $_total_date += $loop_table[$mon] - $day; 757 758 $_day_time = $hr * $_hour_power + $min * $_min_power + $sec; 759 $_day_time = $_day_power - $_day_time; 760 $ret = -( $_total_date * $_day_power + $_day_time - $gmt_different); 761 if ($ret < -12220185600) $ret += 10*86400; // if earlier than 5 Oct 1582 - gregorian correction 762 else if ($ret < -12219321600) $ret = -12219321600; // if in limbo, reset to 15 Oct 1582. 763 } 764 //print " dmy=$day/$mon/$year $hr:$min:$sec => " .$ret; 765 return $ret; 766 } 767 768 function adodb_gmstrftime($fmt, $ts=false) 769 { 770 return adodb_strftime($fmt,$ts,true); 771 } 772 773 // hack - convert to adodb_date 774 function adodb_strftime($fmt, $ts=false,$is_gmt=false) 775 { 776 global $ADODB_DATE_LOCALE; 777 778 if (!defined('ADODB_TEST_DATES')) { 779 if ((abs($ts) <= 0x7FFFFFFF)) { // check if number in 32-bit signed range 780 if (!defined('ADODB_NO_NEGATIVE_TS') || $ts >= 0) // if windows, must be +ve integer 781 return ($is_gmt)? @gmstrftime($fmt,$ts): @strftime($fmt,$ts); 782 783 } 784 } 785 786 if (empty($ADODB_DATE_LOCALE)) { 787 /* 788 $tstr = strtoupper(gmstrftime('%c',31366800)); // 30 Dec 1970, 1 am 789 $sep = substr($tstr,2,1); 790 $hasAM = strrpos($tstr,'M') !== false; 791 */ 792 # see http://phplens.com/lens/lensforum/msgs.php?id=14865 for reasoning, and changelog for version 0.24 793 $dstr = gmstrftime('%x',31366800); // 30 Dec 1970, 1 am 794 $sep = substr($dstr,2,1); 795 $tstr = strtoupper(gmstrftime('%X',31366800)); // 30 Dec 1970, 1 am 796 $hasAM = strrpos($tstr,'M') !== false; 797 798 $ADODB_DATE_LOCALE = array(); 799 $ADODB_DATE_LOCALE[] = strncmp($tstr,'30',2) == 0 ? 'd'.$sep.'m'.$sep.'y' : 'm'.$sep.'d'.$sep.'y'; 800 $ADODB_DATE_LOCALE[] = ($hasAM) ? 'h:i:s a' : 'H:i:s'; 801 802 } 803 $inpct = false; 804 $fmtdate = ''; 805 for ($i=0,$max = strlen($fmt); $i < $max; $i++) { 806 $ch = $fmt[$i]; 807 if ($ch == '%') { 808 if ($inpct) { 809 $fmtdate .= '%'; 810 $inpct = false; 811 } else 812 $inpct = true; 813 } else if ($inpct) { 814 815 $inpct = false; 816 switch($ch) { 817 case '0': 818 case '1': 819 case '2': 820 case '3': 821 case '4': 822 case '5': 823 case '6': 824 case '7': 825 case '8': 826 case '9': 827 case 'E': 828 case 'O': 829 /* ignore format modifiers */ 830 $inpct = true; 831 break; 832 833 case 'a': $fmtdate .= 'D'; break; 834 case 'A': $fmtdate .= 'l'; break; 835 case 'h': 836 case 'b': $fmtdate .= 'M'; break; 837 case 'B': $fmtdate .= 'F'; break; 838 case 'c': $fmtdate .= $ADODB_DATE_LOCALE[0].$ADODB_DATE_LOCALE[1]; break; 839 case 'C': $fmtdate .= '\C?'; break; // century 840 case 'd': $fmtdate .= 'd'; break; 841 case 'D': $fmtdate .= 'm/d/y'; break; 842 case 'e': $fmtdate .= 'j'; break; 843 case 'g': $fmtdate .= '\g?'; break; //? 844 case 'G': $fmtdate .= '\G?'; break; //? 845 case 'H': $fmtdate .= 'H'; break; 846 case 'I': $fmtdate .= 'h'; break; 847 case 'j': $fmtdate .= '?z'; $parsej = true; break; // wrong as j=1-based, z=0-basd 848 case 'm': $fmtdate .= 'm'; break; 849 case 'M': $fmtdate .= 'i'; break; 850 case 'n': $fmtdate .= "\n"; break; 851 case 'p': $fmtdate .= 'a'; break; 852 case 'r': $fmtdate .= 'h:i:s a'; break; 853 case 'R': $fmtdate .= 'H:i:s'; break; 854 case 'S': $fmtdate .= 's'; break; 855 case 't': $fmtdate .= "\t"; break; 856 case 'T': $fmtdate .= 'H:i:s'; break; 857 case 'u': $fmtdate .= '?u'; $parseu = true; break; // wrong strftime=1-based, date=0-based 858 case 'U': $fmtdate .= '?U'; $parseU = true; break;// wrong strftime=1-based, date=0-based 859 case 'x': $fmtdate .= $ADODB_DATE_LOCALE[0]; break; 860 case 'X': $fmtdate .= $ADODB_DATE_LOCALE[1]; break; 861 case 'w': $fmtdate .= '?w'; $parseu = true; break; // wrong strftime=1-based, date=0-based 862 case 'W': $fmtdate .= '?W'; $parseU = true; break;// wrong strftime=1-based, date=0-based 863 case 'y': $fmtdate .= 'y'; break; 864 case 'Y': $fmtdate .= 'Y'; break; 865 case 'Z': $fmtdate .= 'T'; break; 866 } 867 } else if (('A' <= ($ch) && ($ch) <= 'Z' ) || ('a' <= ($ch) && ($ch) <= 'z' )) 868 $fmtdate .= "\\".$ch; 869 else 870 $fmtdate .= $ch; 871 } 872 //echo "fmt=",$fmtdate,"<br>"; 873 if ($ts === false) $ts = time(); 874 $ret = adodb_date($fmtdate, $ts, $is_gmt); 875 return $ret; 876 } 877
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