3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Foo { public function foo(Foo $foo); } class Bar implements Foo { public function foo($foo) { return new StdClass; } } $b = new Bar; var_dump($b->foo("test"));
Output for 7.0.0 - 7.1.0
Fatal error: Declaration of Bar::foo($foo) must be compatible with Foo::foo(Foo $foo) in /in/9uliF on line 7
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Declaration of Bar::foo() must be compatible with Foo::foo(Foo $foo) in /in/9uliF on line 7
Process exited with code 255.
Output for 5.0.0 - 5.3.29
Fatal error: Declaration of Bar::foo() must be compatible with that of Foo::foo() in /in/9uliF 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/9uliF on line 3
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/9uliF on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/9uliF on line 3
Process exited with code 255.