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<?php class Foo { protected $test; function setTest($test) { $this->test = $test; return $this; } } class Bar extends Foo { function setTest($test) : Bar { return parent::setTest($test); } } var_dump((new Bar)->setTest('test'));
Output for git.master, git.master_jit, rfc.property-hooks
object(Bar)#1 (1) { ["test":protected]=> string(4) "test" }

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