Online PHP editor | output for 6XTN0

@ 2026-01-15T08:43:28Z

<?php

date_default_timezone_set('Europe/Zurich');

$now = time();

$timeHourFraction = strtotime("+0.4 days"); // ~ +1 hour
$timePlus1Hour    = strtotime("+1 hour");            // reference

echo "now:            " . date("d.m.Y H:i:s", $now) . PHP_EOL;
echo "+0.4: " . date("d.m.Y H:i:s", $timeHourFraction) . PHP_EOL;
echo "+1 hour:        " . date("d.m.Y H:i:s", $timePlus1Hour) . PHP_EOL;

echo PHP_EOL;
echo "diff (+0.0416666667d - now) seconds: " . ($timeHourFraction - $now) . PHP_EOL;
echo "diff (+1 hour - now) seconds:        " . ($timePlus1Hour - $now) . PHP_EOL;
echo "delta between both seconds:          " . ($timeHourFraction - $timePlus1Hour) . PHP_EOL;

echo PHP_EOL . "equal? ";
var_dump($timeHourFraction === $timePlus1Hour);

Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.17, 8.5.0 - 8.5.2: now: 15.01.2026 09:43:28 +0.4: 19.01.2026 10:43:28 +1 hour: 15.01.2026 10:43:28 diff (+0.0416666667d - now) seconds: 349200 diff (+1 hour - now) seconds: 3600 delta between both seconds: 345600 equal? bool(false)
Output for 5.0.0 - 5.0.5: Fatal error: Call to undefined function date_default_timezone_set() in /in/6XTN0 on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6XTN0 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6XTN0 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: date_default_timezone_set() in /in/6XTN0 on line 3

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