Online PHP editor | output for e13ZI

@ 2017-07-07T08:48:23Z

<?php

$dailyHours = 7.5;

$baseDate = new DateTime('2017-01-01', new DateTimezone('UTC'));
$endDate = clone $baseDate;
for($i = 1; $i <= 4; ++$i) {
    $m = $i*15;
    $duration = new DateInterval("PT{$m}M");
    $endDate->add($duration); 
}

$totalDuration = $baseDate->diff($endDate);

echo $totalDuration->format('%a days, %h hours, %i minutes');

Output for 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: 0 days, 2 hours, 30 minutes
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 0 days, 2 hours, 30 minutes

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