正如其他人已经指出的那样，您正在寻找的PHP函数是 rename ，但是您不能通过http:// URL重命名文件(至少在PHP中不是这样-正如@Artefacto所说，WebDAV可以做到这一点.)

As others already point out, the PHP function you're looking for is rename, but you can't rename a file through a http:// URL (At least not in PHP - As @Artefacto says, WebDAV can do this.).

您将需要指定正确的文件系统路径.

You will need to specify a proper filesystem path.