Why Won't My UTF-8 CSV Import into Excel for Mac?

Overcoming UTF-8 CSV Import Issues in Excel for Mac

When attempting to output UTF-8 encoded CSV files, users may encounter import errors in Microsoft Excel for Mac. Despite properly configuring the HTTP headers, characters may still be rendered incorrectly.

The elusive solution lies in incorporating the Byte Order Mark (BOM) into the CSV output. The BOM is a three-byte sequence that identifies the encoding of the file. For UTF-8, the BOM is represented by the hexadecimal values EF BB BF.

To include the BOM in the output, simply append the following line of code before echoing the data:

echo "\xEF\xBB\xBF"; // UTF-8 BOM

By incorporating this modification, the CSV file will be imported correctly into Excel for Mac, preserving the UTF-8 encoding and displaying characters accurately.

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