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<?php class a { public function __sleep() { return ['a' => 'b']; } } $class = new a; echo serialize($class);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: serialize(): "b" returned as member variable from __sleep() but does not exist in /in/oZmti on line 16 O:1:"a":0:{}

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