3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array['key'] ??= 1;
Output for 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 - 8.3.25, 8.4.1 - 8.4.12
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '=' in /in/Z3dPV on line 2
Process exited with code 255.
preferences:
42.28 ms | 407 KiB | 5 Q