3v4l.org

run code in 300+ PHP versions simultaneously
<?php (new DateTime('2015-09-24 00:00:00'))->modify('+1 week'));
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.29, 5.6.8 - 5.6.13
Parse error: syntax error, unexpected ')' in /in/4WctD on line 3
Process exited with code 255.

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