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<?php date_default_timezone_set('UTC'); $date = new DateTime('2015-01-01T12:00:00-05:00'); $timezone = $date->getTimezone(); var_dump($date); $date->setTimezone(new DateTimeZone('UTC')); var_dump($date); $date->setTimezone($timezone); $date->getTimestamp(); var_dump($date); $date->setTimezone(new DateTimeZone('UTC')); var_dump($date);
Output for 5.5.14 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 12:00:00.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 17:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 12:00:00.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 17:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 12:00:00.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 17:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 12:00:00.000000" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(26) "2015-01-01 17:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 5.5.10 - 5.5.13
object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 12:00:00" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 17:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 12:00:00" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 17:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 5.5.0 - 5.5.9
object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 12:00:00" ["timezone_type"]=> int(1) ["timezone"]=> string(6) "-05:00" } object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 17:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } Warning: DateTime::setTimezone(): Can only do this for zones with ID for now in /in/KnYdW on line 10 object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 17:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#1 (3) { ["date"]=> string(19) "2015-01-01 17:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }

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