3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php interface Comparable { public function compare(self $compare); } // Which is then implemented: class Foo implements Comparable { public function compare(Comparable $compare) {} } class Bar implements Comparable { public function compare(self $compare) {} } $foo = new Foo(); $bar = new Bar(); $foo->compare($foo); $bar->compare($bar);
Output for 7.0.0 - 7.1.0
Fatal error: Declaration of Bar::compare(Bar $compare) must be compatible with Comparable::compare(Comparable $compare) in /in/AmRKZ on line 15
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Uncaught Error: Declaration of Bar::compare() must be compatible with that of Comparable::compare() in /in/AmRKZ:15 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.0
Fatal error: Declaration of Bar::compare() must be compatible with that of Comparable::compare() in /in/AmRKZ on line 15
Process exited with code 255.
Output for 5.4.1 - 5.6.28
Fatal error: Declaration of Bar::compare() must be compatible with Comparable::compare(Comparable $compare) in /in/AmRKZ on line 16
Process exited with code 255.
Output for 5.4.0
Fatal error: Declaration of Foo::compare() must be compatible with Comparable::compare(self $compare) in /in/AmRKZ on line 10
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Declaration of Foo::compare() must be compatible with that of Comparable::compare() in /in/AmRKZ on line 10
Process exited with code 255.
Output for 5.0.0 - 5.2.17
Fatal error: Declaration of Foo::compare() must be compatible with that of Comparable::compare() in /in/AmRKZ 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/AmRKZ on line 2
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/AmRKZ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/AmRKZ on line 2
Process exited with code 255.