3v4l.org

run code in 300+ PHP versions simultaneously
<?php $dates = array('2014-25-09', '2015-25-09', '2016-25-09'); foreach($dates as $id => $date) { $displayId = $id + 1; echo "<span class='countdown' id='countdown{$displayId}'>2014-25-09</span>"; }
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, 5.5.0 - 5.5.38, 5.6.0 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<span class='countdown' id='countdown1'>2014-25-09</span><span class='countdown' id='countdown2'>2014-25-09</span><span class='countdown' id='countdown3'>2014-25-09</span>

preferences:
288.55 ms | 406 KiB | 371 Q