3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = 'string'; echo $var[-1];
Output for 7.1.0 - 7.1.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
g
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Notice: Uninitialized string offset: -1 in /in/Ml4Pt on line 4

preferences:
171.26 ms | 402 KiB | 183 Q