3v4l.org

run code in 300+ PHP versions simultaneously
<?php $v = "Ha!"; $var = $v ?? "test"; echo $var;
Output for 7.0.0 - 7.0.31, 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
Ha!
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Parse error: syntax error, unexpected '?' in /in/hBLUl on line 3
Process exited with code 255.
preferences:
211.85 ms | 402 KiB | 321 Q