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<?php declare(strict_types=1); trait Foo { public function bar(): int { return 1; } } class Bar { use Foo; } class Baz { use Foo; public function bar(): string { return 'boo'; } } $bar = new Bar(); var_dump($bar->bar()); $baz = new Baz(); var_dump($baz->bar());
Output for git.master_jit, git.master
int(1) string(3) "boo"

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