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Moodle
2.2.1
http://www.collinsharper.com
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Moodle
2.2.1
http://www.collinsharper.com
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00001 <?php 00029 abstract class Zend_Date_DateObject { 00030 00034 private $_unixTimestamp; 00035 protected static $_cache = null; 00036 protected static $_defaultOffset = 0; 00037 00041 private $_timezone = 'UTC'; 00042 private $_offset = 0; 00043 private $_syncronised = 0; 00044 00045 // turn off DST correction if UTC or GMT 00046 protected $_dst = true; 00047 00051 private static $_monthTable = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); 00052 00056 private static $_yearTable = array( 00057 1970 => 0, 1960 => -315619200, 1950 => -631152000, 00058 1940 => -946771200, 1930 => -1262304000, 1920 => -1577923200, 00059 1910 => -1893456000, 1900 => -2208988800, 1890 => -2524521600, 00060 1880 => -2840140800, 1870 => -3155673600, 1860 => -3471292800, 00061 1850 => -3786825600, 1840 => -4102444800, 1830 => -4417977600, 00062 1820 => -4733596800, 1810 => -5049129600, 1800 => -5364662400, 00063 1790 => -5680195200, 1780 => -5995814400, 1770 => -6311347200, 00064 1760 => -6626966400, 1750 => -6942499200, 1740 => -7258118400, 00065 1730 => -7573651200, 1720 => -7889270400, 1710 => -8204803200, 00066 1700 => -8520336000, 1690 => -8835868800, 1680 => -9151488000, 00067 1670 => -9467020800, 1660 => -9782640000, 1650 => -10098172800, 00068 1640 => -10413792000, 1630 => -10729324800, 1620 => -11044944000, 00069 1610 => -11360476800, 1600 => -11676096000); 00070 00078 protected function setUnixTimestamp($timestamp = null) 00079 { 00080 $old = $this->_unixTimestamp; 00081 00082 if (is_numeric($timestamp)) { 00083 $this->_unixTimestamp = $timestamp; 00084 } else if ($timestamp === null) { 00085 $this->_unixTimestamp = time(); 00086 } else { 00087 require_once 'Zend/Date/Exception.php'; 00088 throw new Zend_Date_Exception('\'' . $timestamp . '\' is not a valid UNIX timestamp', 0, null, $timestamp); 00089 } 00090 00091 return $old; 00092 } 00093 00101 protected function getUnixTimestamp() 00102 { 00103 if ($this->_unixTimestamp === intval($this->_unixTimestamp)) { 00104 return (int) $this->_unixTimestamp; 00105 } else { 00106 return (string) $this->_unixTimestamp; 00107 } 00108 } 00109 00118 protected function _getTime($sync = null) 00119 { 00120 if ($sync !== null) { 00121 $this->_syncronised = round($sync); 00122 } 00123 return (time() + $this->_syncronised); 00124 } 00125 00145 protected function mktime($hour, $minute, $second, $month, $day, $year, $gmt = false) 00146 { 00147 // complete date but in 32bit timestamp - use PHP internal 00148 if ((1901 < $year) and ($year < 2038)) { 00149 00150 $oldzone = @date_default_timezone_get(); 00151 // Timezone also includes DST settings, therefor substracting the GMT offset is not enough 00152 // We have to set the correct timezone to get the right value 00153 if (($this->_timezone != $oldzone) and ($gmt === false)) { 00154 date_default_timezone_set($this->_timezone); 00155 } 00156 $result = ($gmt) ? @gmmktime($hour, $minute, $second, $month, $day, $year) 00157 : @mktime($hour, $minute, $second, $month, $day, $year); 00158 date_default_timezone_set($oldzone); 00159 00160 return $result; 00161 } 00162 00163 if ($gmt !== true) { 00164 $second += $this->_offset; 00165 } 00166 00167 if (isset(self::$_cache)) { 00168 $id = strtr('Zend_DateObject_mkTime_' . $this->_offset . '_' . $year.$month.$day.'_'.$hour.$minute.$second . '_'.(int)$gmt, '-','_'); 00169 if ($result = self::$_cache->load($id)) { 00170 return unserialize($result); 00171 } 00172 } 00173 00174 // date to integer 00175 $day = intval($day); 00176 $month = intval($month); 00177 $year = intval($year); 00178 00179 // correct months > 12 and months < 1 00180 if ($month > 12) { 00181 $overlap = floor($month / 12); 00182 $year += $overlap; 00183 $month -= $overlap * 12; 00184 } else { 00185 $overlap = ceil((1 - $month) / 12); 00186 $year -= $overlap; 00187 $month += $overlap * 12; 00188 } 00189 00190 $date = 0; 00191 if ($year >= 1970) { 00192 00193 // Date is after UNIX epoch 00194 // go through leapyears 00195 // add months from latest given year 00196 for ($count = 1970; $count <= $year; $count++) { 00197 00198 $leapyear = self::isYearLeapYear($count); 00199 if ($count < $year) { 00200 00201 $date += 365; 00202 if ($leapyear === true) { 00203 $date++; 00204 } 00205 00206 } else { 00207 00208 for ($mcount = 0; $mcount < ($month - 1); $mcount++) { 00209 $date += self::$_monthTable[$mcount]; 00210 if (($leapyear === true) and ($mcount == 1)) { 00211 $date++; 00212 } 00213 00214 } 00215 } 00216 } 00217 00218 $date += $day - 1; 00219 $date = (($date * 86400) + ($hour * 3600) + ($minute * 60) + $second); 00220 } else { 00221 00222 // Date is before UNIX epoch 00223 // go through leapyears 00224 // add months from latest given year 00225 for ($count = 1969; $count >= $year; $count--) { 00226 00227 $leapyear = self::isYearLeapYear($count); 00228 if ($count > $year) 00229 { 00230 $date += 365; 00231 if ($leapyear === true) 00232 $date++; 00233 } else { 00234 00235 for ($mcount = 11; $mcount > ($month - 1); $mcount--) { 00236 $date += self::$_monthTable[$mcount]; 00237 if (($leapyear === true) and ($mcount == 2)) { 00238 $date++; 00239 } 00240 00241 } 00242 } 00243 } 00244 00245 $date += (self::$_monthTable[$month - 1] - $day); 00246 $date = -(($date * 86400) + (86400 - (($hour * 3600) + ($minute * 60) + $second))); 00247 00248 // gregorian correction for 5.Oct.1582 00249 if ($date < -12220185600) { 00250 $date += 864000; 00251 } else if ($date < -12219321600) { 00252 $date = -12219321600; 00253 } 00254 } 00255 00256 if (isset(self::$_cache)) { 00257 self::$_cache->save( serialize($date), $id); 00258 } 00259 00260 return $date; 00261 } 00262 00269 protected static function isYearLeapYear($year) 00270 { 00271 // all leapyears can be divided through 4 00272 if (($year % 4) != 0) { 00273 return false; 00274 } 00275 00276 // all leapyears can be divided through 400 00277 if ($year % 400 == 0) { 00278 return true; 00279 } else if (($year > 1582) and ($year % 100 == 0)) { 00280 return false; 00281 } 00282 00283 return true; 00284 } 00285 00296 protected function date($format, $timestamp = null, $gmt = false) 00297 { 00298 $oldzone = @date_default_timezone_get(); 00299 if ($this->_timezone != $oldzone) { 00300 date_default_timezone_set($this->_timezone); 00301 } 00302 00303 if ($timestamp === null) { 00304 $result = ($gmt) ? @gmdate($format) : @date($format); 00305 date_default_timezone_set($oldzone); 00306 return $result; 00307 } 00308 00309 if (abs($timestamp) <= 0x7FFFFFFF) { 00310 $result = ($gmt) ? @gmdate($format, $timestamp) : @date($format, $timestamp); 00311 date_default_timezone_set($oldzone); 00312 return $result; 00313 } 00314 00315 $jump = false; 00316 $origstamp = $timestamp; 00317 if (isset(self::$_cache)) { 00318 $idstamp = strtr('Zend_DateObject_date_' . $this->_offset . '_'. $timestamp . '_'.(int)$gmt, '-','_'); 00319 if ($result2 = self::$_cache->load($idstamp)) { 00320 $timestamp = unserialize($result2); 00321 $jump = true; 00322 } 00323 } 00324 00325 // check on false or null alone fails 00326 if (empty($gmt) and empty($jump)) { 00327 $tempstamp = $timestamp; 00328 if ($tempstamp > 0) { 00329 while (abs($tempstamp) > 0x7FFFFFFF) { 00330 $tempstamp -= (86400 * 23376); 00331 } 00332 00333 $dst = date("I", $tempstamp); 00334 if ($dst === 1) { 00335 $timestamp += 3600; 00336 } 00337 00338 $temp = date('Z', $tempstamp); 00339 $timestamp += $temp; 00340 } 00341 00342 if (isset(self::$_cache)) { 00343 self::$_cache->save( serialize($timestamp), $idstamp); 00344 } 00345 } 00346 00347 if (($timestamp < 0) and ($gmt !== true)) { 00348 $timestamp -= $this->_offset; 00349 } 00350 00351 date_default_timezone_set($oldzone); 00352 $date = $this->getDateParts($timestamp, true); 00353 $length = strlen($format); 00354 $output = ''; 00355 00356 for ($i = 0; $i < $length; $i++) { 00357 switch($format[$i]) { 00358 // day formats 00359 case 'd': // day of month, 2 digits, with leading zero, 01 - 31 00360 $output .= (($date['mday'] < 10) ? '0' . $date['mday'] : $date['mday']); 00361 break; 00362 00363 case 'D': // day of week, 3 letters, Mon - Sun 00364 $output .= date('D', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday']))); 00365 break; 00366 00367 case 'j': // day of month, without leading zero, 1 - 31 00368 $output .= $date['mday']; 00369 break; 00370 00371 case 'l': // day of week, full string name, Sunday - Saturday 00372 $output .= date('l', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday']))); 00373 break; 00374 00375 case 'N': // ISO 8601 numeric day of week, 1 - 7 00376 $day = self::dayOfWeek($date['year'], $date['mon'], $date['mday']); 00377 if ($day == 0) { 00378 $day = 7; 00379 } 00380 $output .= $day; 00381 break; 00382 00383 case 'S': // english suffix for day of month, st nd rd th 00384 if (($date['mday'] % 10) == 1) { 00385 $output .= 'st'; 00386 } else if ((($date['mday'] % 10) == 2) and ($date['mday'] != 12)) { 00387 $output .= 'nd'; 00388 } else if (($date['mday'] % 10) == 3) { 00389 $output .= 'rd'; 00390 } else { 00391 $output .= 'th'; 00392 } 00393 break; 00394 00395 case 'w': // numeric day of week, 0 - 6 00396 $output .= self::dayOfWeek($date['year'], $date['mon'], $date['mday']); 00397 break; 00398 00399 case 'z': // day of year, 0 - 365 00400 $output .= $date['yday']; 00401 break; 00402 00403 00404 // week formats 00405 case 'W': // ISO 8601, week number of year 00406 $output .= $this->weekNumber($date['year'], $date['mon'], $date['mday']); 00407 break; 00408 00409 00410 // month formats 00411 case 'F': // string month name, january - december 00412 $output .= date('F', mktime(0, 0, 0, $date['mon'], 2, 1971)); 00413 break; 00414 00415 case 'm': // number of month, with leading zeros, 01 - 12 00416 $output .= (($date['mon'] < 10) ? '0' . $date['mon'] : $date['mon']); 00417 break; 00418 00419 case 'M': // 3 letter month name, Jan - Dec 00420 $output .= date('M',mktime(0, 0, 0, $date['mon'], 2, 1971)); 00421 break; 00422 00423 case 'n': // number of month, without leading zeros, 1 - 12 00424 $output .= $date['mon']; 00425 break; 00426 00427 case 't': // number of day in month 00428 $output .= self::$_monthTable[$date['mon'] - 1]; 00429 break; 00430 00431 00432 // year formats 00433 case 'L': // is leap year ? 00434 $output .= (self::isYearLeapYear($date['year'])) ? '1' : '0'; 00435 break; 00436 00437 case 'o': // ISO 8601 year number 00438 $week = $this->weekNumber($date['year'], $date['mon'], $date['mday']); 00439 if (($week > 50) and ($date['mon'] == 1)) { 00440 $output .= ($date['year'] - 1); 00441 } else { 00442 $output .= $date['year']; 00443 } 00444 break; 00445 00446 case 'Y': // year number, 4 digits 00447 $output .= $date['year']; 00448 break; 00449 00450 case 'y': // year number, 2 digits 00451 $output .= substr($date['year'], strlen($date['year']) - 2, 2); 00452 break; 00453 00454 00455 // time formats 00456 case 'a': // lower case am/pm 00457 $output .= (($date['hours'] >= 12) ? 'pm' : 'am'); 00458 break; 00459 00460 case 'A': // upper case am/pm 00461 $output .= (($date['hours'] >= 12) ? 'PM' : 'AM'); 00462 break; 00463 00464 case 'B': // swatch internet time 00465 $dayseconds = ($date['hours'] * 3600) + ($date['minutes'] * 60) + $date['seconds']; 00466 if ($gmt === true) { 00467 $dayseconds += 3600; 00468 } 00469 $output .= (int) (($dayseconds % 86400) / 86.4); 00470 break; 00471 00472 case 'g': // hours without leading zeros, 12h format 00473 if ($date['hours'] > 12) { 00474 $hour = $date['hours'] - 12; 00475 } else { 00476 if ($date['hours'] == 0) { 00477 $hour = '12'; 00478 } else { 00479 $hour = $date['hours']; 00480 } 00481 } 00482 $output .= $hour; 00483 break; 00484 00485 case 'G': // hours without leading zeros, 24h format 00486 $output .= $date['hours']; 00487 break; 00488 00489 case 'h': // hours with leading zeros, 12h format 00490 if ($date['hours'] > 12) { 00491 $hour = $date['hours'] - 12; 00492 } else { 00493 if ($date['hours'] == 0) { 00494 $hour = '12'; 00495 } else { 00496 $hour = $date['hours']; 00497 } 00498 } 00499 $output .= (($hour < 10) ? '0'.$hour : $hour); 00500 break; 00501 00502 case 'H': // hours with leading zeros, 24h format 00503 $output .= (($date['hours'] < 10) ? '0' . $date['hours'] : $date['hours']); 00504 break; 00505 00506 case 'i': // minutes with leading zeros 00507 $output .= (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']); 00508 break; 00509 00510 case 's': // seconds with leading zeros 00511 $output .= (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']); 00512 break; 00513 00514 00515 // timezone formats 00516 case 'e': // timezone identifier 00517 if ($gmt === true) { 00518 $output .= gmdate('e', mktime($date['hours'], $date['minutes'], $date['seconds'], 00519 $date['mon'], $date['mday'], 2000)); 00520 } else { 00521 $output .= date('e', mktime($date['hours'], $date['minutes'], $date['seconds'], 00522 $date['mon'], $date['mday'], 2000)); 00523 } 00524 break; 00525 00526 case 'I': // daylight saving time or not 00527 if ($gmt === true) { 00528 $output .= gmdate('I', mktime($date['hours'], $date['minutes'], $date['seconds'], 00529 $date['mon'], $date['mday'], 2000)); 00530 } else { 00531 $output .= date('I', mktime($date['hours'], $date['minutes'], $date['seconds'], 00532 $date['mon'], $date['mday'], 2000)); 00533 } 00534 break; 00535 00536 case 'O': // difference to GMT in hours 00537 $gmtstr = ($gmt === true) ? 0 : $this->getGmtOffset(); 00538 $output .= sprintf('%s%04d', ($gmtstr <= 0) ? '+' : '-', abs($gmtstr) / 36); 00539 break; 00540 00541 case 'P': // difference to GMT with colon 00542 $gmtstr = ($gmt === true) ? 0 : $this->getGmtOffset(); 00543 $gmtstr = sprintf('%s%04d', ($gmtstr <= 0) ? '+' : '-', abs($gmtstr) / 36); 00544 $output = $output . substr($gmtstr, 0, 3) . ':' . substr($gmtstr, 3); 00545 break; 00546 00547 case 'T': // timezone settings 00548 if ($gmt === true) { 00549 $output .= gmdate('T', mktime($date['hours'], $date['minutes'], $date['seconds'], 00550 $date['mon'], $date['mday'], 2000)); 00551 } else { 00552 $output .= date('T', mktime($date['hours'], $date['minutes'], $date['seconds'], 00553 $date['mon'], $date['mday'], 2000)); 00554 } 00555 break; 00556 00557 case 'Z': // timezone offset in seconds 00558 $output .= ($gmt === true) ? 0 : -$this->getGmtOffset(); 00559 break; 00560 00561 00562 // complete time formats 00563 case 'c': // ISO 8601 date format 00564 $difference = $this->getGmtOffset(); 00565 $difference = sprintf('%s%04d', ($difference <= 0) ? '+' : '-', abs($difference) / 36); 00566 $difference = substr($difference, 0, 3) . ':' . substr($difference, 3); 00567 $output .= $date['year'] . '-' 00568 . (($date['mon'] < 10) ? '0' . $date['mon'] : $date['mon']) . '-' 00569 . (($date['mday'] < 10) ? '0' . $date['mday'] : $date['mday']) . 'T' 00570 . (($date['hours'] < 10) ? '0' . $date['hours'] : $date['hours']) . ':' 00571 . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':' 00572 . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']) 00573 . $difference; 00574 break; 00575 00576 case 'r': // RFC 2822 date format 00577 $difference = $this->getGmtOffset(); 00578 $difference = sprintf('%s%04d', ($difference <= 0) ? '+' : '-', abs($difference) / 36); 00579 $output .= gmdate('D', 86400 * (3 + self::dayOfWeek($date['year'], $date['mon'], $date['mday']))) . ', ' 00580 . (($date['mday'] < 10) ? '0' . $date['mday'] : $date['mday']) . ' ' 00581 . date('M', mktime(0, 0, 0, $date['mon'], 2, 1971)) . ' ' 00582 . $date['year'] . ' ' 00583 . (($date['hours'] < 10) ? '0' . $date['hours'] : $date['hours']) . ':' 00584 . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':' 00585 . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']) . ' ' 00586 . $difference; 00587 break; 00588 00589 case 'U': // Unix timestamp 00590 $output .= $origstamp; 00591 break; 00592 00593 00594 // special formats 00595 case "\\": // next letter to print with no format 00596 $i++; 00597 if ($i < $length) { 00598 $output .= $format[$i]; 00599 } 00600 break; 00601 00602 default: // letter is no format so add it direct 00603 $output .= $format[$i]; 00604 break; 00605 } 00606 } 00607 00608 return (string) $output; 00609 } 00610 00620 protected static function dayOfWeek($year, $month, $day) 00621 { 00622 if ((1901 < $year) and ($year < 2038)) { 00623 return (int) date('w', mktime(0, 0, 0, $month, $day, $year)); 00624 } 00625 00626 // gregorian correction 00627 $correction = 0; 00628 if (($year < 1582) or (($year == 1582) and (($month < 10) or (($month == 10) && ($day < 15))))) { 00629 $correction = 3; 00630 } 00631 00632 if ($month > 2) { 00633 $month -= 2; 00634 } else { 00635 $month += 10; 00636 $year--; 00637 } 00638 00639 $day = floor((13 * $month - 1) / 5) + $day + ($year % 100) + floor(($year % 100) / 4); 00640 $day += floor(($year / 100) / 4) - 2 * floor($year / 100) + 77 + $correction; 00641 00642 return (int) ($day - 7 * floor($day / 7)); 00643 } 00644 00658 protected function getDateParts($timestamp = null, $fast = null) 00659 { 00660 00661 // actual timestamp 00662 if (!is_numeric($timestamp)) { 00663 return getdate(); 00664 } 00665 00666 // 32bit timestamp 00667 if (abs($timestamp) <= 0x7FFFFFFF) { 00668 return @getdate((int) $timestamp); 00669 } 00670 00671 if (isset(self::$_cache)) { 00672 $id = strtr('Zend_DateObject_getDateParts_' . $timestamp.'_'.(int)$fast, '-','_'); 00673 if ($result = self::$_cache->load($id)) { 00674 return unserialize($result); 00675 } 00676 } 00677 00678 $otimestamp = $timestamp; 00679 $numday = 0; 00680 $month = 0; 00681 // gregorian correction 00682 if ($timestamp < -12219321600) { 00683 $timestamp -= 864000; 00684 } 00685 00686 // timestamp lower 0 00687 if ($timestamp < 0) { 00688 $sec = 0; 00689 $act = 1970; 00690 00691 // iterate through 10 years table, increasing speed 00692 foreach(self::$_yearTable as $year => $seconds) { 00693 if ($timestamp >= $seconds) { 00694 $i = $act; 00695 break; 00696 } 00697 $sec = $seconds; 00698 $act = $year; 00699 } 00700 00701 $timestamp -= $sec; 00702 if (!isset($i)) { 00703 $i = $act; 00704 } 00705 00706 // iterate the max last 10 years 00707 do { 00708 --$i; 00709 $day = $timestamp; 00710 00711 $timestamp += 31536000; 00712 $leapyear = self::isYearLeapYear($i); 00713 if ($leapyear === true) { 00714 $timestamp += 86400; 00715 } 00716 00717 if ($timestamp >= 0) { 00718 $year = $i; 00719 break; 00720 } 00721 } while ($timestamp < 0); 00722 00723 $secondsPerYear = 86400 * ($leapyear ? 366 : 365) + $day; 00724 00725 $timestamp = $day; 00726 // iterate through months 00727 for ($i = 12; --$i >= 0;) { 00728 $day = $timestamp; 00729 00730 $timestamp += self::$_monthTable[$i] * 86400; 00731 if (($leapyear === true) and ($i == 1)) { 00732 $timestamp += 86400; 00733 } 00734 00735 if ($timestamp >= 0) { 00736 $month = $i; 00737 $numday = self::$_monthTable[$i]; 00738 if (($leapyear === true) and ($i == 1)) { 00739 ++$numday; 00740 } 00741 break; 00742 } 00743 } 00744 00745 $timestamp = $day; 00746 $numberdays = $numday + ceil(($timestamp + 1) / 86400); 00747 00748 $timestamp += ($numday - $numberdays + 1) * 86400; 00749 $hours = floor($timestamp / 3600); 00750 } else { 00751 00752 // iterate through years 00753 for ($i = 1970;;$i++) { 00754 $day = $timestamp; 00755 00756 $timestamp -= 31536000; 00757 $leapyear = self::isYearLeapYear($i); 00758 if ($leapyear === true) { 00759 $timestamp -= 86400; 00760 } 00761 00762 if ($timestamp < 0) { 00763 $year = $i; 00764 break; 00765 } 00766 } 00767 00768 $secondsPerYear = $day; 00769 00770 $timestamp = $day; 00771 // iterate through months 00772 for ($i = 0; $i <= 11; $i++) { 00773 $day = $timestamp; 00774 $timestamp -= self::$_monthTable[$i] * 86400; 00775 00776 if (($leapyear === true) and ($i == 1)) { 00777 $timestamp -= 86400; 00778 } 00779 00780 if ($timestamp < 0) { 00781 $month = $i; 00782 $numday = self::$_monthTable[$i]; 00783 if (($leapyear === true) and ($i == 1)) { 00784 ++$numday; 00785 } 00786 break; 00787 } 00788 } 00789 00790 $timestamp = $day; 00791 $numberdays = ceil(($timestamp + 1) / 86400); 00792 $timestamp = $timestamp - ($numberdays - 1) * 86400; 00793 $hours = floor($timestamp / 3600); 00794 } 00795 00796 $timestamp -= $hours * 3600; 00797 00798 $month += 1; 00799 $minutes = floor($timestamp / 60); 00800 $seconds = $timestamp - $minutes * 60; 00801 00802 if ($fast === true) { 00803 $array = array( 00804 'seconds' => $seconds, 00805 'minutes' => $minutes, 00806 'hours' => $hours, 00807 'mday' => $numberdays, 00808 'mon' => $month, 00809 'year' => $year, 00810 'yday' => floor($secondsPerYear / 86400), 00811 ); 00812 } else { 00813 00814 $dayofweek = self::dayOfWeek($year, $month, $numberdays); 00815 $array = array( 00816 'seconds' => $seconds, 00817 'minutes' => $minutes, 00818 'hours' => $hours, 00819 'mday' => $numberdays, 00820 'wday' => $dayofweek, 00821 'mon' => $month, 00822 'year' => $year, 00823 'yday' => floor($secondsPerYear / 86400), 00824 'weekday' => gmdate('l', 86400 * (3 + $dayofweek)), 00825 'month' => gmdate('F', mktime(0, 0, 0, $month, 1, 1971)), 00826 0 => $otimestamp 00827 ); 00828 } 00829 00830 if (isset(self::$_cache)) { 00831 self::$_cache->save( serialize($array), $id); 00832 } 00833 00834 return $array; 00835 } 00836 00847 protected function weekNumber($year, $month, $day) 00848 { 00849 if ((1901 < $year) and ($year < 2038)) { 00850 return (int) date('W', mktime(0, 0, 0, $month, $day, $year)); 00851 } 00852 00853 $dayofweek = self::dayOfWeek($year, $month, $day); 00854 $firstday = self::dayOfWeek($year, 1, 1); 00855 if (($month == 1) and (($firstday < 1) or ($firstday > 4)) and ($day < 4)) { 00856 $firstday = self::dayOfWeek($year - 1, 1, 1); 00857 $month = 12; 00858 $day = 31; 00859 00860 } else if (($month == 12) and ((self::dayOfWeek($year + 1, 1, 1) < 5) and 00861 (self::dayOfWeek($year + 1, 1, 1) > 0))) { 00862 return 1; 00863 } 00864 00865 return intval (((self::dayOfWeek($year, 1, 1) < 5) and (self::dayOfWeek($year, 1, 1) > 0)) + 00866 4 * ($month - 1) + (2 * ($month - 1) + ($day - 1) + $firstday - $dayofweek + 6) * 36 / 256); 00867 } 00868 00876 private function _range($a, $b) { 00877 while ($a < 0) { 00878 $a += $b; 00879 } 00880 while ($a >= $b) { 00881 $a -= $b; 00882 } 00883 return $a; 00884 } 00885 00893 protected function calcSun($location, $horizon, $rise = false) 00894 { 00895 // timestamp within 32bit 00896 if (abs($this->_unixTimestamp) <= 0x7FFFFFFF) { 00897 if ($rise === false) { 00898 return date_sunset($this->_unixTimestamp, SUNFUNCS_RET_TIMESTAMP, $location['latitude'], 00899 $location['longitude'], 90 + $horizon, $this->getGmtOffset() / 3600); 00900 } 00901 return date_sunrise($this->_unixTimestamp, SUNFUNCS_RET_TIMESTAMP, $location['latitude'], 00902 $location['longitude'], 90 + $horizon, $this->getGmtOffset() / 3600); 00903 } 00904 00905 // self calculation - timestamp bigger than 32bit 00906 // fix circle values 00907 $quarterCircle = 0.5 * M_PI; 00908 $halfCircle = M_PI; 00909 $threeQuarterCircle = 1.5 * M_PI; 00910 $fullCircle = 2 * M_PI; 00911 00912 // radiant conversion for coordinates 00913 $radLatitude = $location['latitude'] * $halfCircle / 180; 00914 $radLongitude = $location['longitude'] * $halfCircle / 180; 00915 00916 // get solar coordinates 00917 $tmpRise = $rise ? $quarterCircle : $threeQuarterCircle; 00918 $radDay = $this->date('z',$this->_unixTimestamp) + ($tmpRise - $radLongitude) / $fullCircle; 00919 00920 // solar anomoly and longitude 00921 $solAnomoly = $radDay * 0.017202 - 0.0574039; 00922 $solLongitude = $solAnomoly + 0.0334405 * sin($solAnomoly); 00923 $solLongitude += 4.93289 + 3.49066E-4 * sin(2 * $solAnomoly); 00924 00925 // get quadrant 00926 $solLongitude = $this->_range($solLongitude, $fullCircle); 00927 00928 if (($solLongitude / $quarterCircle) - intval($solLongitude / $quarterCircle) == 0) { 00929 $solLongitude += 4.84814E-6; 00930 } 00931 00932 // solar ascension 00933 $solAscension = sin($solLongitude) / cos($solLongitude); 00934 $solAscension = atan2(0.91746 * $solAscension, 1); 00935 00936 // adjust quadrant 00937 if ($solLongitude > $threeQuarterCircle) { 00938 $solAscension += $fullCircle; 00939 } else if ($solLongitude > $quarterCircle) { 00940 $solAscension += $halfCircle; 00941 } 00942 00943 // solar declination 00944 $solDeclination = 0.39782 * sin($solLongitude); 00945 $solDeclination /= sqrt(-$solDeclination * $solDeclination + 1); 00946 $solDeclination = atan2($solDeclination, 1); 00947 00948 $solHorizon = $horizon - sin($solDeclination) * sin($radLatitude); 00949 $solHorizon /= cos($solDeclination) * cos($radLatitude); 00950 00951 // midnight sun, always night 00952 if (abs($solHorizon) > 1) { 00953 return false; 00954 } 00955 00956 $solHorizon /= sqrt(-$solHorizon * $solHorizon + 1); 00957 $solHorizon = $quarterCircle - atan2($solHorizon, 1); 00958 00959 if ($rise) { 00960 $solHorizon = $fullCircle - $solHorizon; 00961 } 00962 00963 // time calculation 00964 $localTime = $solHorizon + $solAscension - 0.0172028 * $radDay - 1.73364; 00965 $universalTime = $localTime - $radLongitude; 00966 00967 // determinate quadrant 00968 $universalTime = $this->_range($universalTime, $fullCircle); 00969 00970 // radiant to hours 00971 $universalTime *= 24 / $fullCircle; 00972 00973 // convert to time 00974 $hour = intval($universalTime); 00975 $universalTime = ($universalTime - $hour) * 60; 00976 $min = intval($universalTime); 00977 $universalTime = ($universalTime - $min) * 60; 00978 $sec = intval($universalTime); 00979 00980 return $this->mktime($hour, $min, $sec, $this->date('m', $this->_unixTimestamp), 00981 $this->date('j', $this->_unixTimestamp), $this->date('Y', $this->_unixTimestamp), 00982 -1, true); 00983 } 00984 00994 public function setTimezone($zone = null) 00995 { 00996 $oldzone = @date_default_timezone_get(); 00997 if ($zone === null) { 00998 $zone = $oldzone; 00999 } 01000 01001 // throw an error on false input, but only if the new date extension is available 01002 if (function_exists('timezone_open')) { 01003 if (!@timezone_open($zone)) { 01004 require_once 'Zend/Date/Exception.php'; 01005 throw new Zend_Date_Exception("timezone ($zone) is not a known timezone", 0, null, $zone); 01006 } 01007 } 01008 // this can generate an error if the date extension is not available and a false timezone is given 01009 $result = @date_default_timezone_set($zone); 01010 if ($result === true) { 01011 $this->_offset = mktime(0, 0, 0, 1, 2, 1970) - gmmktime(0, 0, 0, 1, 2, 1970); 01012 $this->_timezone = $zone; 01013 } 01014 date_default_timezone_set($oldzone); 01015 01016 if (($zone == 'UTC') or ($zone == 'GMT')) { 01017 $this->_dst = false; 01018 } else { 01019 $this->_dst = true; 01020 } 01021 01022 return $this; 01023 } 01024 01031 public function getTimezone() 01032 { 01033 return $this->_timezone; 01034 } 01035 01043 public function getGmtOffset() 01044 { 01045 $date = $this->getDateParts($this->getUnixTimestamp(), true); 01046 $zone = @date_default_timezone_get(); 01047 $result = @date_default_timezone_set($this->_timezone); 01048 if ($result === true) { 01049 $offset = $this->mktime($date['hours'], $date['minutes'], $date['seconds'], 01050 $date['mon'], $date['mday'], $date['year'], false) 01051 - $this->mktime($date['hours'], $date['minutes'], $date['seconds'], 01052 $date['mon'], $date['mday'], $date['year'], true); 01053 } 01054 date_default_timezone_set($zone); 01055 01056 return $offset; 01057 } 01058 }
1.7.6.1 
