3v4l.org

run code in 300+ PHP versions simultaneously
<?php class X implements ArrayAccess { function offsetGet($n) { va_dump(0,$n); return "42";} function offsetSet($x, $z) { var_dump($x, $z); } function offsetExists() {} function offsetUnset() {} } $x = new X(); $x[23]++;
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of X::offsetExists() must be compatible with ArrayAccess::offsetExists(mixed $offset): bool in /in/l1WYJ on line 5
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Declaration of X::offsetExists() must be compatible with ArrayAccess::offsetExists(mixed $offset) in /in/l1WYJ on line 5
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Fatal error: Declaration of X::offsetExists() must be compatible with ArrayAccess::offsetExists($offset) in /in/l1WYJ on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of X::offsetExists() must be compatible with ArrayAccess::offsetExists($offset) in /in/l1WYJ on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Declaration of X::offsetExists() must be compatible with that of ArrayAccess::offsetExists() in /in/l1WYJ on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/l1WYJ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/l1WYJ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/l1WYJ on line 2
Process exited with code 255.
preferences:
209.13 ms | 401 KiB | 354 Q