3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Foo { public function setFoo(Foo $aFoo); } class Bar implements Foo { private $foo; public function setFoo(Bar $aFoo) // fatal error { $this->foo = $aFoo; } }
Output for 7.0.0 - 7.1.0
Fatal error: Declaration of Bar::setFoo(Bar $aFoo) must be compatible with Foo::setFoo(Foo $aFoo) in /in/ncvoF on line 8
Process exited with code 255.
Output for 5.0.0 - 5.2.17, hhvm-3.10.0 - 3.12.0
Fatal error: Declaration of Bar::setFoo() must be compatible with that of Foo::setFoo() in /in/ncvoF on line 8
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Declaration of Bar::setFoo() must be compatible with Foo::setFoo(Foo $aFoo) in /in/ncvoF on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Declaration of Bar::setFoo() must be compatible with that of Foo::setFoo() in /in/ncvoF on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/ncvoF 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/ncvoF on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ncvoF on line 3
Process exited with code 255.