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<?php function initialize_properties_here($object) { $object->bar = 123; } class Foo { public int $bar; public function __construct() { unset($this->bar); } public function __get(string $name) { initialize_properties_here($this); } } var_dump((new Foo())->bar);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: Value of type null returned from Foo::__get() must be compatible with unset property Foo::$bar of type int in /in/bsHXH:19 Stack trace: #0 {main} thrown in /in/bsHXH on line 19
Process exited with code 255.

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