php - 复制，重命名和move_uploaded_file之间的差异 [英] php - Differences between copy, rename and move_uploaded_file

问题描述

当我使用这些功能时，是否有区别？为什么要使用一个而不是另一个... ...

解决方案

copy（）复制文件 - 你现在有2个文件，而对于大文件，这可能需要很长时间

rename ）改变文件的名称，这可能意味着在目录之间移动它。

move_uploaded_file（）基本上与 rename（）相同，但是它只能用于通过PHP的上传机制上传的文件。这是一项安全功能，可防止用户欺骗您的脚本，向他们显示与安全相关的数据。

今后，请自行在 PHP手册中提供这些信息。

Are there differences when I use that functions? Why should I use one instead of the other one...

解决方案

• copy() copies the file - you now have 2 files, and for large files, this can take very long
• rename() changes the file's name, which can mean moving it between directories.
• move_uploaded_file() is basically the same as rename(), but it will only work on files that have been uploaded via PHP's upload mechanism. This is a security feature that prevents users from tricking your script into showing them security-relevant data.

In the future, I suggest looking up such information in the PHP Manual yourself.

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