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IntlTimeZone::fromDateTimeZone(DateTimeZone $dtz) converts from an ext/date TimeZone to an IntlTimeZone. The conversion is done by feeding the time zone name (essentially what would be given by DateTimeZone::getName()) to ICU's TimeZone::createTimeZone except if it's an offset time zone. In that case, the offset is read from the ext/date time zone object structure and an appopriate id (of the form GMT<+|-><HH:MM>) is given to ICU's TimeZone::createTimeZone. Not all ext/date time zones are recognized for ICU. For instance, WEST is not. Note that these kind of abbreviations, as far as I can tell, can only be created via ext/date DateTime, not directly through DateTimeZone's constructor. For IntlTimeZone::toDateTimeZone(), the behavior is symmetrical. We instantiate a DateTimeZone and then call its constructor if we don't have an offset time zone, otherwise we mess with its structure. If the timezone is not valid for ext/date, then we allow the exception of DateTimeZone constructor to propagate.
42 lines
1.1 KiB
PHP
42 lines
1.1 KiB
PHP
--TEST--
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IntlTimeZone::fromDateTimeZone(): basic test
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--SKIPIF--
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<?php
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if (!extension_loaded('intl'))
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die('skip intl extension not enabled');
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--FILE--
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<?php
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ini_set("intl.error_level", E_WARNING);
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ini_set("intl.default_locale", "nl");
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date_default_timezone_set('Europe/Lisbon');
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$tz = IntlTimeZone::fromDateTimeZone(new DateTimeZone('Europe/Amsterdam'));
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var_dump($tz->getID(), $tz->getRawOffset());
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$dt = new DateTime('2012-01-01 00:00:00 CET');
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$dtz = $dt->getTimeZone();
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/* this is different from new DateTimeZone('CET'),
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* which gives a Europe/Berlin timezone */
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var_dump($dtz->getName());
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$tz = IntlTimeZone::fromDateTimeZone($dtz);
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var_dump($tz->getID(), $tz->getRawOffset());
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$dt = new DateTime('2012-01-01 00:00:00 +0340');
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$dtz = $dt->getTimeZone();
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/* I don't think this timezone can be generated without a DateTime object */
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var_dump($dtz->getName());
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$tz = IntlTimeZone::fromDateTimeZone($dtz);
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var_dump($tz->getID(), $tz->getRawOffset() /* (3*60+40)*60000 */);
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--EXPECTF--
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string(16) "Europe/Amsterdam"
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int(3600000)
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string(3) "CET"
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string(3) "CET"
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int(3600000)
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string(6) "+03:40"
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string(%d) "GMT+03%s0"
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int(13200000)
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