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--TEST-- Keeping a reference to an object property in an array should not override existing references ?> --FILE-- <?php class Container { /** @var \stdClass|null */ public $referencedProperty; public function __clone() { $this->referencedProperty = clone $this->referencedProperty; } } $references = []; $container = new Container(); $loadFieldByReference = function (& $referencedProperty) use (& $references) { $referencedProperty = new \stdClass(); $references[] = & $referencedProperty; }; $loadFieldByReference($container->referencedProperty); $container->referencedProperty->publicProperty = 123; $clone = clone $container; $clone->referencedProperty->publicProperty = 234; echo $container->referencedProperty->publicProperty, "\n"; echo $clone->referencedProperty->publicProperty, "\n"; echo $container->referencedProperty === $clone->referencedProperty ? "same\n" : "not same\n"; ?> --EXPECT-- 123 234 not same