3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['first']; if (isset($array[2])) { echo "Key 2 exists"; } echo "Now the code just flows through";
Output for 7.1.0 - 7.1.17, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Now the code just flows through
preferences:
169.05 ms | 407 KiB | 5 Q