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Why do files need to be uploaded to read the file information? Isn't it possible without uploading?

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Release： 2016-10-18 08:41:59
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Why do files need to be uploaded to obtain file information? Is it because of permission issues?
I want to get the content in excel, and the ultimate goal is to write it into the database. Wouldn’t it be great if I could get the file content without uploading it? Of course, this does not mean that it can be read arbitrarily. It definitely requires the user to trigger certain operations.

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php File Upload
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