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run code in 200+ php & hhvm versions
Bugs & Features
<?php if (class_exists('DateTime')) { $date = new DateTime('2013-10-31'); $date->modify('-1 month'); print $date->format('m'); } else { print 'Not supported.'; }
Output for 5.2.0 - 7.2.0
10
Output for 4.3.0 - 5.1.6
Not supported.