3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = explode("/",'09/28/2007'); for($i=0;$i<2;$i++){ if($date[$i] < 10){ $date[$i] = '0'.$date[$i]; } } // echo $date[2].$date[0].$date[1]; echo strlen('000');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
3

preferences:
206.5 ms | 405 KiB | 324 Q