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run code in 150+ php & hhvm versions
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<?php echo date('Y-m-d', strtotime('2013-07-31 23:59:20')); echo '<br>'; echo date("M-d-Y", mktime(0, 0, 0, 13, 1, 1997));
Output for 4.3.0 - 5.6.23, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
2013-07-31<br>Jan-01-1998