3v4l.org

run code in 300+ PHP versions simultaneously
<?php $stuff = array( 'a','b','c' ); for ($i=0; $i <= 5; $i++) { if (isset($stuff[$i])) { echo $stuff[$i]; } else { echo 'no such key as ' . $i . ' <br>'; } }
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 - 7.1.33, 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
abcno such key as 3 <br>no such key as 4 <br>no such key as 5 <br>
preferences:
243.93 ms | 406 KiB | 400 Q