3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php abstract class Foo {} class Bar extends Foo {} abstract class Builder { function doIt(Foo $foo) {} } class RealBuilder extends Builder { function doIt(Bar $bar) { var_dump($bar); } } $builder = new RealBuilder(); $bar = new Bar(); $builder->doIt($bar);
Output for 7.0.0 - 7.1.0
Warning: Declaration of RealBuilder::doIt(Bar $bar) should be compatible with Builder::doIt(Foo $foo) in /in/p2s6M on line 19 object(Bar)#2 (0) { }
Output for 5.4.0 - 5.6.28
Strict Standards: Declaration of RealBuilder::doIt() should be compatible with Builder::doIt(Foo $foo) in /in/p2s6M on line 19 object(Bar)#2 (0) { }
Output for 5.0.0 - 5.3.29
Strict Standards: Declaration of RealBuilder::doIt() should be compatible with that of Builder::doIt() in /in/p2s6M on line 19 object(Bar)#2 (0) { }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/p2s6M 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_CLASS in /in/p2s6M on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/p2s6M on line 3
Process exited with code 255.