Online PHP editor | output for PQoan

@ 2020-04-16T19:14:27Z

<?php

// Mutable
$today = new DateTime;
$yesterday = $today->sub(new DateInterval('P1D')); // subtract one day
$tomorrow = $today->add(new DateInterval('P1D')); // add one day

// $today, $yesterday and $tomorrow are all the same date! 🤯
echo "Today is ".$today->format('Y-m-d'). "\n";
echo "Yesterday is ".$yesterday->format('Y-m-d'). "\n";
echo "Tomorrow is ".$tomorrow->format('Y-m-d'). "\n";

// Immutable
$today = new DateTimeImmutable;
$yesterday = $today->sub(new DateInterval('P1D')); // subtract one day
$tomorrow = $today->add(new DateInterval('P1D')); // add one day

// $today, $yesterday and $tomorrow are all the same date! 🤯
echo "With DateTimeImmutable: Today is ".$today->format('Y-m-d'). "\n";
echo "With DateTimeImmutable: Yesterday is ".$yesterday->format('Y-m-d'). "\n";
echo "With DateTimeImmutable: Tomorrow is ".$tomorrow->format('Y-m-d'). "\n";

Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: Today is 2020-12-03 Yesterday is 2020-12-03 Tomorrow is 2020-12-03 With DateTimeImmutable: Today is 2020-12-03 With DateTimeImmutable: Yesterday is 2020-12-02 With DateTimeImmutable: Tomorrow is 2020-12-04
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45: Today is 2020-12-03 Yesterday is 2020-12-03 Tomorrow is 2020-12-03 Fatal error: Class 'DateTimeImmutable' not found in /in/PQoan on line 14
Process exited with code 255.
Output for 5.2.0 - 5.2.17: Fatal error: Call to undefined method DateTime::sub() in /in/PQoan on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Class 'DateTime' not found in /in/PQoan on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: Fatal error: Cannot instantiate non-existent class: datetime in /in/PQoan on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Cannot instantiate non-existent class: datetime in /in/PQoan on line 4

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