3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("dec 2015", "january 2015", "jan 2015"); var_dump(array_map(function($v) { return new DateTime($v); }, $a));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(3) { [0]=> object(DateTime)#2 (3) { ["date"]=> string(26) "2015-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } [1]=> object(DateTime)#3 (3) { ["date"]=> string(26) "2015-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } [2]=> object(DateTime)#4 (3) { ["date"]=> string(26) "2015-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } }
Output for 7.3.32 - 7.3.33, 8.0.13
array(3) { [0]=> object(DateTime)#2 (3) { ["date"]=> string(26) "2015-12-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } [1]=> object(DateTime)#3 (3) { ["date"]=> string(26) "2015-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } [2]=> object(DateTime)#4 (3) { ["date"]=> string(26) "2015-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } }

preferences:
160.16 ms | 403 KiB | 180 Q