Online PHP editor | output for XV2JE

@ 2018-05-30T14:09:40Z

<?php

echo 'Forward transition:'.PHP_EOL;

$dt = new DateTime('2018-03-25 1:30 Europe/Oslo');
$di = new DateInterval('P1D');

echo $dt->add($di)->format('c').PHP_EOL;

$dt = new DateTime('2018-03-25 1:30 Europe/Oslo');
$di = new DateInterval('PT24H');

echo $dt->add($di)->format('c').PHP_EOL;

$dt = new DateTime('2018-03-25 1:30 Europe/Oslo');
$di = new DateInterval('P1DT24H');

echo $dt->add($di)->format('c').PHP_EOL;

echo PHP_EOL.'Backward transition:'.PHP_EOL;

$dt = new DateTime('2018-10-28 1:30 Europe/Oslo');
$di = new DateInterval('P1D');

echo $dt->add($di)->format('c').PHP_EOL;

$dt = new DateTime('2018-10-28 1:30 Europe/Oslo');
$di = new DateInterval('PT24H');

echo $dt->add($di)->format('c').PHP_EOL;

$dt = new DateTime('2018-10-28 1:30 Europe/Oslo');
$di = new DateInterval('P1DT24H');

echo $dt->add($di)->format('c').PHP_EOL;

Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Forward transition: 2018-03-26T01:30:00+02:00 2018-03-26T02:30:00+02:00 2018-03-27T01:30:00+02:00 Backward transition: 2018-10-29T01:30:00+01:00 2018-10-29T00:30:00+01:00 2018-10-30T01:30:00+01:00
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 Forward transition: 2018-03-26T01:30:00+02:00 2018-03-26T02:30:00+02:00 2018-03-27T01:30:00+02:00 Backward transition: 2018-10-29T01:30:00+01:00 2018-10-29T00:30:00+01:00 2018-10-30T01:30:00+01:00
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30: Forward transition: 2018-03-26T01:30:00+02:00 2018-03-26T01:30:00+02:00 2018-03-27T01:30:00+02:00 Backward transition: 2018-10-29T01:30:00+01:00 2018-10-29T00:30:00+01:00 2018-10-30T01:30:00+01:00

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