3v4l.org

run code in 300+ PHP versions simultaneously
<?hh function a(mixed $a):num { invariant(is_int($a) || is_float($a), "msg"); return $a; } var_dump(a("1"));
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?hh function a(mixed $a):num { invariant(is_int($a) || is_float($a), "msg"); return $a; } var_dump(a("1"));
Output for 8.0.13
Parse error: syntax error, unexpected token "function" in /in/35LHG on line 3
Process exited with code 255.
Output for 5.4.34, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'function' (T_FUNCTION) in /in/35LHG on line 3
Process exited with code 255.
preferences:
147.22 ms | 401 KiB | 173 Q