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<?php $foo = new class {}; function modify($a) { global $foo; var_dump($a === $foo); $a->hello = "world"; var_dump($a === $foo); } modify($foo); var_dump($foo);
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) Deprecated: Creation of dynamic property class@anonymous::$hello is deprecated in /in/p9Deo on line 9 bool(true) object(class@anonymous)#1 (1) { ["hello"]=> string(5) "world" }

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