3v4l.org

run code in 300+ PHP versions simultaneously
<?php trait FooTrait { abstract public function flashMessage($message); public function successMessage() { $this->flashMessage('foo'); } } class BarPresenter { /*public function flashMessage($message) { var_dump($message); }*/ } class FooPresenter extends BarPresenter { use FooTrait; } $foo = new FooPresenter(); $foo->successMessage();
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Class FooPresenter contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (FooPresenter::flashMessage) in /in/cVU4a on line 25
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Class FooPresenter contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (FooPresenter::flashMessage) in /in/cVU4a on line 30
Process exited with code 255.
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