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This article mainly shows you "how to achieve upload restrictions in php". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "how to achieve upload restrictions in php".

Upload limit

In this script, we have added restrictions on file uploads. Users can only upload .gif or .jpeg files, and the file size must be less than 20 kb:

Note: for IE, the type that identifies the jpg file must be pjpeg, and for FireFox, it must be jpeg.

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