3v4l.org

run code in 300+ PHP versions simultaneously
<?php fn($a): never => die();
Output for 8.0.30, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Output for 8.1.33 - 8.1.34
Fatal error: A never-returning function must not return in /in/Kmq3Q on line 3
Process exited with code 255.
Output for 5.6.23
Parse error: syntax error, unexpected ':' in /in/Kmq3Q on line 3
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected ':' in /in/Kmq3Q on line 3
Process exited with code 255.
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56.29 ms | 850 KiB | 4 Q