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<?php trait testTrait { final public function helloWorld() { echo 'hello world !' . PHP_EOL; } } class Test { use testTrait; } class NewTest extends Test { public function helloWorld() { echo 'boom' . PHP_EOL; } } $test = new Test(); $test->helloWorld();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Cannot override final method Test::helloWorld() in /in/uhsP9 on line 14
Process exited with code 255.

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