Document Charset Restriction for Html/Xml Reader (#3068)

Fix #1681, although probably not to the originator's satisfaction. Html and Xml readers will handle documents only with a charset of UTF-8. This PR documents that restriction. No change to source code; see the original issue for explanation.
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oleibman 2022-09-19 06:49:01 -07:00 committed by GitHub
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@ -282,6 +282,7 @@ versions of Microsoft Excel.
**Excel 2003 XML limitations** Please note that Excel 2003 XML format
has some limits regarding to styling cells and handling large
spreadsheets via PHP.
Also, only files using charset UTF-8 are supported.
### \PhpOffice\PhpSpreadsheet\Reader\Xml
@ -701,6 +702,7 @@ extension.
**HTML limitations** Please note that HTML file format has some limits
regarding to styling cells, number formatting, ...
Also, only files using charset UTF-8 are supported.
### \PhpOffice\PhpSpreadsheet\Reader\Html