3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (function_exists("date_default_timezone_set")) date_default_timezone_set('Europe/Moscow'); echo date( "Y-m-d",strtotime('2014-01-31 +1 month')); echo "\n"; $date = new DateTime('2014-01-31'); $date->modify('+1 month'); echo $date->format('Y-m-d');

preferences:
34.97 ms | 402 KiB | 5 Q