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<?php function get_timestamp ($time = NULL) { echo '<br>', date ('Y-M-d H:m:s', $time); } get_timestamp (); get_timestamp (time()); get_timestamp (NULL);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<br>1970-Jan-01 01:01:00<br>2013-Oct-19 20:10:22<br>1970-Jan-01 01:01:00