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<?php $arrayA = array(); $arrayB = array(&$arrayA); $arrayA[] = &$arrayB; var_dump($arrayA,$arrayB); var_dump(serialize($arrayA)); var_dump(json_encode($arrayA));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> &array(1) { [0]=> *RECURSION* } } array(1) { [0]=> &array(1) { [0]=> *RECURSION* } } string(34) "a:1:{i:0;a:1:{i:0;a:1:{i:0;R:2;}}}" bool(false)

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