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run code in 200+ PHP versions simultaneously
<?php $b = (new \DateTime((new \DateTimeImmutable())->modify("last Monday")->format("Y-m-d H:i:s"))); var_dump($a, $b, $c);
based on JpKfH

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for branch php-master
Warning: Undefined variable: a in /in/EgGHg on line 6 Warning: Undefined variable: c in /in/EgGHg on line 6 NULL object(DateTime)#1 (3) { ["date"]=> string(26) "2019-12-02 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } NULL
Output for branch php-master+opcache
Warning: Undefined variable: a in /in/EgGHg on line 6 Warning: Undefined variable: c in /in/EgGHg on line 6 NULL object(DateTime)#1 (3) { ["date"]=> string(26) "2019-12-02 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } NULL

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page