How to upload large files above 500MB in PHP

Question

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Answer 1

Do you think if increasing upload size limit will solve the problem? what if uploading 2GB file, what's happening then? Do you take into consideration the memory usage of such a script?

Instead, what you need is chunked upload, see here : Handling plupload's chunked uploads on the server-side and here : File uploads; How to utilize "chunking"?