3v4l.org

run code in 300+ PHP versions simultaneously
<?php $time = time(); $date = date(DATE_FORMAT_SHORT, $time); $d = $time - strtotime($date); var_dump($d);
Output for 7.2.0 - 7.2.6
Warning: Use of undefined constant DATE_FORMAT_SHORT - assumed 'DATE_FORMAT_SHORT' (this will throw an Error in a future version of PHP) in /in/7TsZ1 on line 4 int(1447690306)
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant DATE_FORMAT_SHORT - assumed 'DATE_FORMAT_SHORT' in /in/7TsZ1 on line 4 int(1447690306)
preferences:
140.77 ms | 402 KiB | 85 Q