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HomeBackend DevelopmentPHP Tutorial【求思路】PHP目录扫描,最大防止死循环的思路?该如何解决

【求思路】PHP目录扫描,最大防止死循环的思路?
PHP扫描某个文件夹,防止死循环的思路。
现在自己想到的只有两种思路
1, while 扫描下去,如果碰到目录继续while。容易死机卡住
2,层级扫描,扫描一层然后保存目录地址到记录文件。然后再从保存的记录文件中提取目录地址再扫描一层,每次只扫描一层。不过如果目录太多,还是容易死机。
有没有更好的思路?

目录扫描 PHP opendir
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