[php-src] Issue #8281: mb_convert_encoding "\" (backslash) and "~" (tilde) convert failed to Shift_JIS

Issue: https://github.com/php/php-src/issues/8281 Comment Author: youkidearitai @alexdowad , Thanks for reply. I'll answer questions. Shift_JIS is still used in active use, and a common use case is importing CSV into Excel. Since Excel could only import CSV with Shift_JIS for a long time, there may still be cases where it is converted with SJIS. In other words, mb_convert_encoding is done when downloading and uploading CSV. Also, Windows uses \0x5C for the directory separator. If convert this, it will not function as a directory separator. This conversion of \0x5C and \0x7E can be confusing. In most Japanese character code implementations, it seems customary to convert \0x5C and \0x7E untouched. Japanese PHP users may have other opportunities to use Shift_JIS, so I was very interested in talking about this problem.