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<?php function func(&$data) { foreach ($data as $key => $value) { if (is_array($value)) { func($data[$key]); } } } $data = [ ['k' => [0]], ['k' => [1]], ]; debug_zval_dump($data[1]['k']); //refcount(2) func($data); debug_zval_dump($data[1]['k']); //refcount(3) array_replace_recursive($data[0], $data[1]); echo json_encode($data);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) refcount(2){ [0]=> int(1) } array(1) refcount(3){ [0]=> int(1) } [{"k":[0]},{"k":[1]}]

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