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<?php $tz = new DateTimeZone('America/Toronto'); var_dump($tz->getTransitions(strtotime("1800-01-01"), strtotime("1900-01-01")));
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(2) { [0]=> array(5) { ["ts"]=> int(-5364663572) ["time"]=> string(25) "1799-12-31T23:40:28+00:00" ["offset"]=> int(-19052) ["isdst"]=> bool(false) ["abbr"]=> string(3) "LMT" } [1]=> array(5) { ["ts"]=> int(-2366736148) ["time"]=> string(25) "1895-01-01T05:17:32+00:00" ["offset"]=> int(-18000) ["isdst"]=> bool(false) ["abbr"]=> string(3) "EST" } }
Output for 7.3.33, 7.4.27 - 7.4.33, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27
array(2) { [0]=> array(5) { ["ts"]=> int(-5364663572) ["time"]=> string(24) "1799-12-31T23:40:28+0000" ["offset"]=> int(-19052) ["isdst"]=> bool(false) ["abbr"]=> string(3) "LMT" } [1]=> array(5) { ["ts"]=> int(-2366736148) ["time"]=> string(24) "1895-01-01T05:17:32+0000" ["offset"]=> int(-18000) ["isdst"]=> bool(false) ["abbr"]=> string(3) "EST" } }
Output for 7.3.2 - 7.3.32, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13
array(2) { [0]=> array(5) { ["ts"]=> int(-5364662400) ["time"]=> string(24) "1800-01-01T00:00:00+0000" ["offset"]=> int(-19052) ["isdst"]=> bool(false) ["abbr"]=> string(3) "LMT" } [1]=> array(5) { ["ts"]=> int(-2366736148) ["time"]=> string(24) "1895-01-01T05:17:32+0000" ["offset"]=> int(-18000) ["isdst"]=> bool(false) ["abbr"]=> string(3) "EST" } }
Output for 7.3.0 - 7.3.1
array(1) { [0]=> array(5) { ["ts"]=> int(-5364662400) ["time"]=> string(24) "1800-01-01T00:00:00+0000" ["offset"]=> int(-19052) ["isdst"]=> bool(false) ["abbr"]=> string(3) "LMT" } }

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157.28 ms | 401 KiB | 152 Q