Perfectly Solve the Problem of Garbled Characters When Exporting .csv Format Data from php

1header('Content-Encoding: XXXX');

It may be an encoding issue:You can try UTF-8, GBK, GB2312, etc. encoding formats

2It may be a file encoding issue, although UTF-8It is not recommended to include BOM, but since the exported Excel is a Microsoft product, the file format needs to be changed to UTF-8There is a BOM format.

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