<?php function func(&$data) { foreach ($data as $key => $value) { if (is_array($value)) { func($data[$key]); } } } $data = [ ['zero' => [0]], ['one' => [1]], ]; debug_zval_dump($data[1]['one']); //refcount=2 func($data); debug_zval_dump($data[1]['one']); //refcount=3
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