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<?php /** * @method &foo() */ class Test { public $values = []; public function &__call($name, $args) { $this->values[$name] ??= null; return $this->values[$name]; } } $test = new Test(); $foo =& $test->foo(); $foo = 42; var_dump($test->values);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["foo"]=> &int(42) }

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