PHP隱藏的坑

轉自 ：https://blog.csdn.net/oudahe/article/details/80661364?ops_request_misc=&request_id=&biz_id=102&utm_term=PHP%E4%BB%A3%E7%A0%81%E6%8A%80%E5%B7%A7&utm_medium=distribute.pc_search_result.none-task-blo

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