Mercurial > hg > rc1

comparison plugins/libcalendaring/lib/Sabre/VObject/TimeZoneUtil.php @ 4:888e774ee983

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libcalendar plugin as distributed
author Charlie Root
date Sat, 13 Jan 2018 08:57:56 -0500
parents
children
comparison
equal deleted inserted replaced
3:f6fe4b6ae66a 4:888e774ee983
1 <?php
2
3 namespace Sabre\VObject;
4
5 /**
6 * Time zone name translation
7 *
8 * This file translates well-known time zone names into "Olson database" time zone names.
9 *
10 * @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
11 * @author Frank Edelhaeuser (fedel@users.sourceforge.net)
12 * @author Evert Pot (http://evertpot.com/)
13 * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
14 */
15 class TimeZoneUtil {
16
17 public static $map = array(
18
19 // from http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/zone_tzid.html
20 // snapshot taken on 2012/01/16
21
22 // windows
23 'AUS Central Standard Time'=>'Australia/Darwin',
24 'AUS Eastern Standard Time'=>'Australia/Sydney',
25 'Afghanistan Standard Time'=>'Asia/Kabul',
26 'Alaskan Standard Time'=>'America/Anchorage',
27 'Arab Standard Time'=>'Asia/Riyadh',
28 'Arabian Standard Time'=>'Asia/Dubai',
29 'Arabic Standard Time'=>'Asia/Baghdad',
30 'Argentina Standard Time'=>'America/Buenos_Aires',
31 'Armenian Standard Time'=>'Asia/Yerevan',
32 'Atlantic Standard Time'=>'America/Halifax',
33 'Azerbaijan Standard Time'=>'Asia/Baku',
34 'Azores Standard Time'=>'Atlantic/Azores',
35 'Bangladesh Standard Time'=>'Asia/Dhaka',
36 'Canada Central Standard Time'=>'America/Regina',
37 'Cape Verde Standard Time'=>'Atlantic/Cape_Verde',
38 'Caucasus Standard Time'=>'Asia/Yerevan',
39 'Cen. Australia Standard Time'=>'Australia/Adelaide',
40 'Central America Standard Time'=>'America/Guatemala',
41 'Central Asia Standard Time'=>'Asia/Almaty',
42 'Central Brazilian Standard Time'=>'America/Cuiaba',
43 'Central Europe Standard Time'=>'Europe/Budapest',
44 'Central European Standard Time'=>'Europe/Warsaw',
45 'Central Pacific Standard Time'=>'Pacific/Guadalcanal',
46 'Central Standard Time'=>'America/Chicago',
47 'Central Standard Time (Mexico)'=>'America/Mexico_City',
48 'China Standard Time'=>'Asia/Shanghai',
49 'Dateline Standard Time'=>'Etc/GMT+12',
50 'E. Africa Standard Time'=>'Africa/Nairobi',
51 'E. Australia Standard Time'=>'Australia/Brisbane',
52 'E. Europe Standard Time'=>'Europe/Minsk',
53 'E. South America Standard Time'=>'America/Sao_Paulo',
54 'Eastern Standard Time'=>'America/New_York',
55 'Egypt Standard Time'=>'Africa/Cairo',
56 'Ekaterinburg Standard Time'=>'Asia/Yekaterinburg',
57 'FLE Standard Time'=>'Europe/Kiev',
58 'Fiji Standard Time'=>'Pacific/Fiji',
59 'GMT Standard Time'=>'Europe/London',
60 'GTB Standard Time'=>'Europe/Istanbul',
61 'Georgian Standard Time'=>'Asia/Tbilisi',
62 'Greenland Standard Time'=>'America/Godthab',
63 'Greenwich Standard Time'=>'Atlantic/Reykjavik',
64 'Hawaiian Standard Time'=>'Pacific/Honolulu',
65 'India Standard Time'=>'Asia/Calcutta',
66 'Iran Standard Time'=>'Asia/Tehran',
67 'Israel Standard Time'=>'Asia/Jerusalem',
68 'Jordan Standard Time'=>'Asia/Amman',
69 'Kamchatka Standard Time'=>'Asia/Kamchatka',
70 'Korea Standard Time'=>'Asia/Seoul',
71 'Magadan Standard Time'=>'Asia/Magadan',
72 'Mauritius Standard Time'=>'Indian/Mauritius',
73 'Mexico Standard Time'=>'America/Mexico_City',
74 'Mexico Standard Time 2'=>'America/Chihuahua',
75 'Mid-Atlantic Standard Time'=>'Etc/GMT-2',
76 'Middle East Standard Time'=>'Asia/Beirut',
77 'Montevideo Standard Time'=>'America/Montevideo',
78 'Morocco Standard Time'=>'Africa/Casablanca',
79 'Mountain Standard Time'=>'America/Denver',
80 'Mountain Standard Time (Mexico)'=>'America/Chihuahua',
81 'Myanmar Standard Time'=>'Asia/Rangoon',
82 'N. Central Asia Standard Time'=>'Asia/Novosibirsk',
83 'Namibia Standard Time'=>'Africa/Windhoek',
84 'Nepal Standard Time'=>'Asia/Katmandu',
85 'New Zealand Standard Time'=>'Pacific/Auckland',
86 'Newfoundland Standard Time'=>'America/St_Johns',
87 'North Asia East Standard Time'=>'Asia/Irkutsk',
88 'North Asia Standard Time'=>'Asia/Krasnoyarsk',
89 'Pacific SA Standard Time'=>'America/Santiago',
90 'Pacific Standard Time'=>'America/Los_Angeles',
91 'Pacific Standard Time (Mexico)'=>'America/Santa_Isabel',
92 'Pakistan Standard Time'=>'Asia/Karachi',
93 'Paraguay Standard Time'=>'America/Asuncion',
94 'Romance Standard Time'=>'Europe/Paris',
95 'Russian Standard Time'=>'Europe/Moscow',
96 'SA Eastern Standard Time'=>'America/Cayenne',
97 'SA Pacific Standard Time'=>'America/Bogota',
98 'SA Western Standard Time'=>'America/La_Paz',
99 'SE Asia Standard Time'=>'Asia/Bangkok',
100 'Samoa Standard Time'=>'Pacific/Apia',
101 'Singapore Standard Time'=>'Asia/Singapore',
102 'South Africa Standard Time'=>'Africa/Johannesburg',
103 'Sri Lanka Standard Time'=>'Asia/Colombo',
104 'Syria Standard Time'=>'Asia/Damascus',
105 'Taipei Standard Time'=>'Asia/Taipei',
106 'Tasmania Standard Time'=>'Australia/Hobart',
107 'Tokyo Standard Time'=>'Asia/Tokyo',
108 'Tonga Standard Time'=>'Pacific/Tongatapu',
109 'US Eastern Standard Time'=>'America/Indianapolis',
110 'US Mountain Standard Time'=>'America/Phoenix',
111 'UTC+12'=>'Etc/GMT-12',
112 'UTC-02'=>'Etc/GMT+2',
113 'UTC-11'=>'Etc/GMT+11',
114 'Ulaanbaatar Standard Time'=>'Asia/Ulaanbaatar',
115 'Venezuela Standard Time'=>'America/Caracas',
116 'Vladivostok Standard Time'=>'Asia/Vladivostok',
117 'W. Australia Standard Time'=>'Australia/Perth',
118 'W. Central Africa Standard Time'=>'Africa/Lagos',
119 'W. Europe Standard Time'=>'Europe/Berlin',
120 'West Asia Standard Time'=>'Asia/Tashkent',
121 'West Pacific Standard Time'=>'Pacific/Port_Moresby',
122 'Yakutsk Standard Time'=>'Asia/Yakutsk',
123
124 // Microsoft exchange timezones
125 // Source:
126 // http://msdn.microsoft.com/en-us/library/ms988620%28v=exchg.65%29.aspx
127 //
128 // Correct timezones deduced with help from:
129 // http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
130 'Universal Coordinated Time' => 'UTC',
131 'Casablanca, Monrovia' => 'Africa/Casablanca',
132 'Greenwich Mean Time: Dublin, Edinburgh, Lisbon, London' => 'Europe/Lisbon',
133 'Greenwich Mean Time; Dublin, Edinburgh, London' => 'Europe/London',
134 'Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna' => 'Europe/Berlin',
135 'Belgrade, Pozsony, Budapest, Ljubljana, Prague' => 'Europe/Prague',
136 'Brussels, Copenhagen, Madrid, Paris' => 'Europe/Paris',
137 'Paris, Madrid, Brussels, Copenhagen' => 'Europe/Paris',
138 'Prague, Central Europe' => 'Europe/Prague',
139 'Sarajevo, Skopje, Sofija, Vilnius, Warsaw, Zagreb' => 'Europe/Sarajevo',
140 'West Central Africa' => 'Africa/Luanda', // This was a best guess
141 'Athens, Istanbul, Minsk' => 'Europe/Athens',
142 'Bucharest' => 'Europe/Bucharest',
143 'Cairo' => 'Africa/Cairo',
144 'Harare, Pretoria' => 'Africa/Harare',
145 'Helsinki, Riga, Tallinn' => 'Europe/Helsinki',
146 'Israel, Jerusalem Standard Time' => 'Asia/Jerusalem',
147 'Baghdad' => 'Asia/Baghdad',
148 'Arab, Kuwait, Riyadh' => 'Asia/Kuwait',
149 'Moscow, St. Petersburg, Volgograd' => 'Europe/Moscow',
150 'East Africa, Nairobi' => 'Africa/Nairobi',
151 'Tehran' => 'Asia/Tehran',
152 'Abu Dhabi, Muscat' => 'Asia/Muscat', // Best guess
153 'Baku, Tbilisi, Yerevan' => 'Asia/Baku',
154 'Kabul' => 'Asia/Kabul',
155 'Ekaterinburg' => 'Asia/Yekaterinburg',
156 'Islamabad, Karachi, Tashkent' => 'Asia/Karachi',
157 'Kolkata, Chennai, Mumbai, New Delhi, India Standard Time' => 'Asia/Calcutta',
158 'Kathmandu, Nepal' => 'Asia/Kathmandu',
159 'Almaty, Novosibirsk, North Central Asia' => 'Asia/Almaty',
160 'Astana, Dhaka' => 'Asia/Dhaka',
161 'Sri Jayawardenepura, Sri Lanka' => 'Asia/Colombo',
162 'Rangoon' => 'Asia/Rangoon',
163 'Bangkok, Hanoi, Jakarta' => 'Asia/Bangkok',
164 'Krasnoyarsk' => 'Asia/Krasnoyarsk',
165 'Beijing, Chongqing, Hong Kong SAR, Urumqi' => 'Asia/Shanghai',
166 'Irkutsk, Ulaan Bataar' => 'Asia/Irkutsk',
167 'Kuala Lumpur, Singapore' => 'Asia/Singapore',
168 'Perth, Western Australia' => 'Australia/Perth',
169 'Taipei' => 'Asia/Taipei',
170 'Osaka, Sapporo, Tokyo' => 'Asia/Tokyo',
171 'Seoul, Korea Standard time' => 'Asia/Seoul',
172 'Yakutsk' => 'Asia/Yakutsk',
173 'Adelaide, Central Australia' => 'Australia/Adelaide',
174 'Darwin' => 'Australia/Darwin',
175 'Brisbane, East Australia' => 'Australia/Brisbane',
176 'Canberra, Melbourne, Sydney, Hobart (year 2000 only)' => 'Australia/Sydney',
177 'Guam, Port Moresby' => 'Pacific/Guam',
178 'Hobart, Tasmania' => 'Australia/Hobart',
179 'Vladivostok' => 'Asia/Vladivostok',
180 'Magadan, Solomon Is., New Caledonia' => 'Asia/Magadan',
181 'Auckland, Wellington' => 'Pacific/Auckland',
182 'Fiji Islands, Kamchatka, Marshall Is.' => 'Pacific/Fiji',
183 'Nuku\'alofa, Tonga' => 'Pacific/Tongatapu',
184 'Azores' => 'Atlantic/Azores',
185 'Cape Verde Is.' => 'Atlantic/Cape_Verde',
186 'Mid-Atlantic' => 'America/Noronha',
187 'Brasilia' => 'America/Sao_Paulo', // Best guess
188 'Buenos Aires' => 'America/Argentina/Buenos_Aires',
189 'Greenland' => 'America/Godthab',
190 'Newfoundland' => 'America/St_Johns',
191 'Atlantic Time (Canada)' => 'America/Halifax',
192 'Caracas, La Paz' => 'America/Caracas',
193 'Santiago' => 'America/Santiago',
194 'Bogota, Lima, Quito' => 'America/Bogota',
195 'Eastern Time (US & Canada)' => 'America/New_York',
196 'Indiana (East)' => 'America/Indiana/Indianapolis',
197 'Central America' => 'America/Guatemala',
198 'Central Time (US & Canada)' => 'America/Chicago',
199 'Mexico City, Tegucigalpa' => 'America/Mexico_City',
200 'Saskatchewan' => 'America/Edmonton',
201 'Arizona' => 'America/Phoenix',
202 'Mountain Time (US & Canada)' => 'America/Denver', // Best guess
203 'Pacific Time (US & Canada); Tijuana' => 'America/Los_Angeles', // Best guess
204 'Alaska' => 'America/Anchorage',
205 'Hawaii' => 'Pacific/Honolulu',
206 'Midway Island, Samoa' => 'Pacific/Midway',
207 'Eniwetok, Kwajalein, Dateline Time' => 'Pacific/Kwajalein',
208
209 // The following list are timezone names that could be generated by
210 // Lotus / Domino
211 'Dateline' => 'Etc/GMT-12',
212 'Samoa' => 'Pacific/Apia',
213 'Hawaiian' => 'Pacific/Honolulu',
214 'Alaskan' => 'America/Anchorage',
215 'Pacific' => 'America/Los_Angeles',
216 'Pacific Standard Time' => 'America/Los_Angeles',
217 'Mexico Standard Time 2' => 'America/Chihuahua',
218 'Mountain' => 'America/Denver',
219 'Mountain Standard Time' => 'America/Chihuahua',
220 'US Mountain' => 'America/Phoenix',
221 'Canada Central' => 'America/Edmonton',
222 'Central America' => 'America/Guatemala',
223 'Central' => 'America/Chicago',
224 'Central Standard Time' => 'America/Mexico_City',
225 'Mexico' => 'America/Mexico_City',
226 'Eastern' => 'America/New_York',
227 'SA Pacific' => 'America/Bogota',
228 'US Eastern' => 'America/Indiana/Indianapolis',
229 'Venezuela' => 'America/Caracas',
230 'Atlantic' => 'America/Halifax',
231 'Central Brazilian' => 'America/Manaus',
232 'Pacific SA' => 'America/Santiago',
233 'SA Western' => 'America/La_Paz',
234 'Newfoundland' => 'America/St_Johns',
235 'Argentina' => 'America/Argentina/Buenos_Aires',
236 'E. South America' => 'America/Belem',
237 'Greenland' => 'America/Godthab',
238 'Montevideo' => 'America/Montevideo',
239 'SA Eastern' => 'America/Belem',
240 'Mid-Atlantic' => 'Etc/GMT-2',
241 'Azores' => 'Atlantic/Azores',
242 'Cape Verde' => 'Atlantic/Cape_Verde',
243 'Greenwich' => 'Atlantic/Reykjavik', // No I'm serious.. Greenwich is not GMT.
244 'Morocco' => 'Africa/Casablanca',
245 'Central Europe' => 'Europe/Prague',
246 'Central European' => 'Europe/Sarajevo',
247 'Romance' => 'Europe/Paris',
248 'W. Central Africa' => 'Africa/Lagos', // Best guess
249 'W. Europe' => 'Europe/Amsterdam',
250 'E. Europe' => 'Europe/Minsk',
251 'Egypt' => 'Africa/Cairo',
252 'FLE' => 'Europe/Helsinki',
253 'GTB' => 'Europe/Athens',
254 'Israel' => 'Asia/Jerusalem',
255 'Jordan' => 'Asia/Amman',
256 'Middle East' => 'Asia/Beirut',
257 'Namibia' => 'Africa/Windhoek',
258 'South Africa' => 'Africa/Harare',
259 'Arab' => 'Asia/Kuwait',
260 'Arabic' => 'Asia/Baghdad',
261 'E. Africa' => 'Africa/Nairobi',
262 'Georgian' => 'Asia/Tbilisi',
263 'Russian' => 'Europe/Moscow',
264 'Iran' => 'Asia/Tehran',
265 'Arabian' => 'Asia/Muscat',
266 'Armenian' => 'Asia/Yerevan',
267 'Azerbijan' => 'Asia/Baku',
268 'Caucasus' => 'Asia/Yerevan',
269 'Mauritius' => 'Indian/Mauritius',
270 'Afghanistan' => 'Asia/Kabul',
271 'Ekaterinburg' => 'Asia/Yekaterinburg',
272 'Pakistan' => 'Asia/Karachi',
273 'West Asia' => 'Asia/Tashkent',
274 'India' => 'Asia/Calcutta',
275 'Sri Lanka' => 'Asia/Colombo',
276 'Nepal' => 'Asia/Kathmandu',
277 'Central Asia' => 'Asia/Dhaka',
278 'N. Central Asia' => 'Asia/Almaty',
279 'Myanmar' => 'Asia/Rangoon',
280 'North Asia' => 'Asia/Krasnoyarsk',
281 'SE Asia' => 'Asia/Bangkok',
282 'China' => 'Asia/Shanghai',
283 'North Asia East' => 'Asia/Irkutsk',
284 'Singapore' => 'Asia/Singapore',
285 'Taipei' => 'Asia/Taipei',
286 'W. Australia' => 'Australia/Perth',
287 'Korea' => 'Asia/Seoul',
288 'Tokyo' => 'Asia/Tokyo',
289 'Yakutsk' => 'Asia/Yakutsk',
290 'AUS Central' => 'Australia/Darwin',
291 'Cen. Australia' => 'Australia/Adelaide',
292 'AUS Eastern' => 'Australia/Sydney',
293 'E. Australia' => 'Australia/Brisbane',
294 'Tasmania' => 'Australia/Hobart',
295 'Vladivostok' => 'Asia/Vladivostok',
296 'West Pacific' => 'Pacific/Guam',
297 'Central Pacific' => 'Asia/Magadan',
298 'Fiji' => 'Pacific/Fiji',
299 'New Zealand' => 'Pacific/Auckland',
300 'Tonga' => 'Pacific/Tongatapu',
301 );
302
303 /**
304 * List of microsoft exchange timezone ids.
305 *
306 * Source: http://msdn.microsoft.com/en-us/library/aa563018(loband).aspx
307 */
308 public static $microsoftExchangeMap = array(
309 0 => 'UTC',
310 31 => 'Africa/Casablanca',
311
312 // Insanely, id #2 is used for both Europe/Lisbon, and Europe/Sarajevo.
313 // I'm not even kidding.. We handle this special case in the
314 // getTimeZone method.
315 2 => 'Europe/Lisbon',
316 1 => 'Europe/London',
317 4 => 'Europe/Berlin',
318 6 => 'Europe/Prague',
319 3 => 'Europe/Paris',
320 69 => 'Africa/Luanda', // This was a best guess
321 7 => 'Europe/Athens',
322 5 => 'Europe/Bucharest',
323 49 => 'Africa/Cairo',
324 50 => 'Africa/Harare',
325 59 => 'Europe/Helsinki',
326 27 => 'Asia/Jerusalem',
327 26 => 'Asia/Baghdad',
328 74 => 'Asia/Kuwait',
329 51 => 'Europe/Moscow',
330 56 => 'Africa/Nairobi',
331 25 => 'Asia/Tehran',
332 24 => 'Asia/Muscat', // Best guess
333 54 => 'Asia/Baku',
334 48 => 'Asia/Kabul',
335 58 => 'Asia/Yekaterinburg',
336 47 => 'Asia/Karachi',
337 23 => 'Asia/Calcutta',
338 62 => 'Asia/Kathmandu',
339 46 => 'Asia/Almaty',
340 71 => 'Asia/Dhaka',
341 66 => 'Asia/Colombo',
342 61 => 'Asia/Rangoon',
343 22 => 'Asia/Bangkok',
344 64 => 'Asia/Krasnoyarsk',
345 45 => 'Asia/Shanghai',
346 63 => 'Asia/Irkutsk',
347 21 => 'Asia/Singapore',
348 73 => 'Australia/Perth',
349 75 => 'Asia/Taipei',
350 20 => 'Asia/Tokyo',
351 72 => 'Asia/Seoul',
352 70 => 'Asia/Yakutsk',
353 19 => 'Australia/Adelaide',
354 44 => 'Australia/Darwin',
355 18 => 'Australia/Brisbane',
356 76 => 'Australia/Sydney',
357 43 => 'Pacific/Guam',
358 42 => 'Australia/Hobart',
359 68 => 'Asia/Vladivostok',
360 41 => 'Asia/Magadan',
361 17 => 'Pacific/Auckland',
362 40 => 'Pacific/Fiji',
363 67 => 'Pacific/Tongatapu',
364 29 => 'Atlantic/Azores',
365 53 => 'Atlantic/Cape_Verde',
366 30 => 'America/Noronha',
367 8 => 'America/Sao_Paulo', // Best guess
368 32 => 'America/Argentina/Buenos_Aires',
369 60 => 'America/Godthab',
370 28 => 'America/St_Johns',
371 9 => 'America/Halifax',
372 33 => 'America/Caracas',
373 65 => 'America/Santiago',
374 35 => 'America/Bogota',
375 10 => 'America/New_York',
376 34 => 'America/Indiana/Indianapolis',
377 55 => 'America/Guatemala',
378 11 => 'America/Chicago',
379 37 => 'America/Mexico_City',
380 36 => 'America/Edmonton',
381 38 => 'America/Phoenix',
382 12 => 'America/Denver', // Best guess
383 13 => 'America/Los_Angeles', // Best guess
384 14 => 'America/Anchorage',
385 15 => 'Pacific/Honolulu',
386 16 => 'Pacific/Midway',
387 39 => 'Pacific/Kwajalein',
388 );
389
390 /**
391 * This method will try to find out the correct timezone for an iCalendar
392 * date-time value.
393 *
394 * You must pass the contents of the TZID parameter, as well as the full
395 * calendar.
396 *
397 * If the lookup fails, this method will return the default PHP timezone
398 * (as configured using date_default_timezone_set, or the date.timezone ini
399 * setting).
400 *
401 * Alternatively, if $failIfUncertain is set to true, it will throw an
402 * exception if we cannot accurately determine the timezone.
403 *
404 * @param string $tzid
405 * @param Sabre\VObject\Component $vcalendar
406 * @return DateTimeZone
407 */
408 static public function getTimeZone($tzid, Component $vcalendar = null, $failIfUncertain = false) {
409
410 // First we will just see if the tzid is a support timezone identifier.
411 try {
412 return new \DateTimeZone($tzid);
413 } catch (\Exception $e) {
414 }
415
416 // Next, we check if the tzid is somewhere in our tzid map.
417 if (isset(self::$map[$tzid])) {
418 return new \DateTimeZone(self::$map[$tzid]);
419 }
420
421 // Maybe the author was hyper-lazy and just included an offset. We
422 // support it, but we aren't happy about it.
423 if (preg_match('/^GMT(\+|-)([0-9]{4})$/', $tzid, $matches)) {
424 return new \DateTimeZone('Etc/GMT' . $matches[1] . ltrim(substr($matches[2],0,2),'0'));
425 }
426
427 if ($vcalendar) {
428
429 // If that didn't work, we will scan VTIMEZONE objects
430 foreach($vcalendar->select('VTIMEZONE') as $vtimezone) {
431
432 if ((string)$vtimezone->TZID === $tzid) {
433
434 // Some clients add 'X-LIC-LOCATION' with the olson name.
435 if (isset($vtimezone->{'X-LIC-LOCATION'})) {
436
437 $lic = (string)$vtimezone->{'X-LIC-LOCATION'};
438
439 // Libical generators may specify strings like
440 // "SystemV/EST5EDT". For those we must remove the
441 // SystemV part.
442 if (substr($lic,0,8)==='SystemV/') {
443 $lic = substr($lic,8);
444 }
445
446 try {
447 return new \DateTimeZone($lic);
448 } catch (\Exception $e) {
449 }
450
451 }
452 // Microsoft may add a magic number, which we also have an
453 // answer for.
454 if (isset($vtimezone->{'X-MICROSOFT-CDO-TZID'})) {
455 $cdoId = (int)$vtimezone->{'X-MICROSOFT-CDO-TZID'}->value;
456
457 // 2 can mean both Europe/Lisbon and Europe/Sarajevo.
458 if ($cdoId===2 && strpos((string)$vtimezone->TZID, 'Sarajevo')!==false) {
459 return new \DateTimeZone('Europe/Sarajevo');
460 }
461
462 if (isset(self::$microsoftExchangeMap[$cdoId])) {
463 return new \DateTimeZone(self::$microsoftExchangeMap[$cdoId]);
464 }
465 }
466
467 }
468
469 }
470
471 }
472
473 if ($failIfUncertain) {
474 throw new \InvalidArgumentException('We were unable to determine the correct PHP timezone for tzid: ' . $tzid);
475 }
476
477 // If we got all the way here, we default to UTC.
478 return new \DateTimeZone(date_default_timezone_get());
479
480 }
481
482 }