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<?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 for ($i = 0; $i < 10000; $i++) func($data); debug_zval_dump($data[1]['one']); //refcount=3
Output for git.master, git.master_jit, rfc.property-hooks
array(1) refcount(2){ [0]=> int(1) } array(1) refcount(3){ [0]=> int(1) }

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