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run code in 300+ PHP versions simultaneously
<?php interface Fooable { function foo(Fooable $f = null); } interface StrictFoo extends Fooable { function foo(Fooable $f); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Declaration of StrictFoo::foo(Fooable $f) must be compatible with Fooable::foo(?Fooable $f = null) in /in/kRKUN on line 8
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Fatal error: Declaration of StrictFoo::foo(Fooable $f) must be compatible with Fooable::foo(?Fooable $f = NULL) in /in/kRKUN on line 8
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of StrictFoo::foo(Fooable $f) must be compatible with Fooable::foo(?Fooable $f = NULL) in /in/kRKUN on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Fatal error: Declaration of StrictFoo::foo(Fooable $f) must be compatible with Fooable::foo(Fooable $f = NULL) in /in/kRKUN on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28
Fatal error: Declaration of StrictFoo::foo() must be compatible with Fooable::foo(Fooable $f = NULL) in /in/kRKUN on line 7
Process exited with code 255.
Output for 5.3.9 - 5.3.29
Fatal error: Declaration of StrictFoo::foo() must be compatible with that of Fooable::foo() in /in/kRKUN on line 7
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 - 5.3.8
Fatal error: Can't inherit abstract function Fooable::foo() (previously declared abstract in StrictFoo) in /in/kRKUN on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/kRKUN on line 3
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 in /in/kRKUN on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/kRKUN on line 3
Process exited with code 255.

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