3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface A { function f($s); } class Base { function f(string $s) { } } class C extends Base implements A { }
based on 6pcrm
Output for 7.0.0 - 7.1.0
Fatal error: Declaration of Base::f(string $s) must be compatible with A::f($s) in /in/l02T6 on line 13
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Declaration of Base::f() must be compatible with A::f($s) in /in/l02T6 on line 13
Process exited with code 255.
Output for 5.0.0 - 5.3.29
Fatal error: Declaration of Base::f() must be compatible with that of A::f() in /in/l02T6 on line 13
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/l02T6 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/l02T6 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/l02T6 on line 4
Process exited with code 255.