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<?php error_reporting(E_ALL ^ E_DEPRECATED); class Callback { use CallbackTrait; public function __construct() {} } trait CallbackTrait { public function callback() { echo 'this is called'; } } new Callback();
Output for 8.0.0 - 8.0.3
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16
Fatal error: Callback has colliding constructor definitions coming from traits in /in/nbh6X on line 5
Process exited with code 255.