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<?php $dateMin = new DateTimeImmutable('@'.PHP_INT_MIN); $dateMax = new DateTimeImmutable('@'.PHP_INT_MAX); $interval = new DateInterval('PT1S'); var_dump([ 'min' => $dateMin->format('Y-m-d H:i:s'), 'min -1 second' => $dateMin->sub($interval)->format('Y-m-d H:i:s'), 'max' => $dateMax->format('Y-m-d H:i:s'), 'max +1 second' => $dateMax->add($interval)->format('Y-m-d H:i:s'), ]);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(4) { ["min"]=> string(28) "-292277022657-01-27 08:29:52" ["min -1 second"]=> string(27) "292277026596-12-04 15:30:07" ["max"]=> string(27) "292277026596-12-04 15:30:07" ["max +1 second"]=> string(28) "-292277022657-01-27 08:29:52" }
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 array(4) { ["min"]=> string(28) "-292277022657-01-27 08:29:52" ["min -1 second"]=> string(27) "292277026596-12-04 15:30:07" ["max"]=> string(27) "292277026596-12-04 15:30:07" ["max +1 second"]=> string(28) "-292277022657-01-27 08:29:52" }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.21, 7.4.0 - 7.4.10, 8.1.0 - 8.1.28
array(4) { ["min"]=> string(28) "-292277022657-01-27 08:29:53" ["min -1 second"]=> string(28) "-292277022657-01-27 08:29:52" ["max"]=> string(27) "292277026596-12-04 15:30:07" ["max +1 second"]=> string(28) "-292277022657-01-27 08:29:52" }
Output for 7.3.23 - 7.3.33, 7.4.11 - 7.4.33, 8.0.0 - 8.0.30
array(4) { ["min"]=> string(27) "-29227700493-05-20 06:56:53" ["min -1 second"]=> string(27) "-29227700493-05-20 06:56:52" ["max"]=> string(26) "29227704433-08-14 17:03:07" ["max +1 second"]=> string(26) "29227704433-08-14 17:03:08" }

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