php获取json数据所有的节点路径

<"n"; 
 } else {
 $queue = array();
 foreach ($data as $field => $value) {
 $queue[] = $field; 
}
 $head = 0;
 $tail = count($queue);
 while ($head < $tail) {
 $field = $queue[$head++];
 $path = explode("/", $field);
 $tmpData = &$data; 
 foreach ($path as $key => $ph) {
 $tmpData = &$tmpData[$ph];
}
 if (is_array($tmpData) && !empty($tmpData)) {
 $newField = $field; 
 foreach ($tmpData as $curField => $curValue) {
 $newField = $field . '/' . $curField;
 $queue[$tail++] = $newField;
}
 } else {
 $retData[] = $field; 
}
}
}
 return $retData;
}

//测试数据
$data = file_get_contents("http://restapi.ele.me/v1/restaurants");

$ret = iterTree($data);
print_r($ret);