当我有一个导入数据的Excel VBA例程时，我也遇到了同样的问题。由于CSV是纯文本格式，我通过编程方式在简单的文件编辑器(如写字板)中打开数据，并将其重新保存为unicode文本，或者从那里将其复制到剪贴板并粘贴到Excel中来解决这个问题。如果excel不能自动地将CSV解析为单元格，可以使用内置的“文本到列”功能轻松地进行补救。

CSV文件必须包含字节顺序标记。

或者像建议的那样，使用HTTP正文进行回显

**This is 100% works fine in excel for both Windows7,8,10 and also All Mac OS.**
//Fix issues in excel that are not displaying characters containing diacritics, cyrillic letters, Greek letter and currency symbols.

function generateCSVFile($filename, $headings, $data) {

    //Use tab as field separator
    $newTab  = "\t";
    $newLine  = "\n";

    $fputcsv  =  count($headings) ? '"'. implode('"'.$newTab.'"', $headings).'"'.$newLine : '';

    // Loop over the * to export
    if (! empty($data)) {
      foreach($data as $item) {
        $fputcsv .= '"'. implode('"'.$newTab.'"', $item).'"'.$newLine;
      }
    }

    //Convert CSV to UTF-16
    $encoded_csv = mb_convert_encoding($fputcsv, 'UTF-16LE', 'UTF-8');

    // Output CSV-specific headers
    header('Set-Cookie: fileDownload=true; path=/'); //This cookie is needed in order to trigger the success window.
    header("Pragma: public");
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: private",false);
    header("Content-Type: application/octet-stream");
    header("Content-Disposition: attachment; filename=\"$filename.csv\";" );
    header("Content-Transfer-Encoding: binary");
    header('Content-Length: '. strlen($encoded_csv));
    echo chr(255) . chr(254) . $encoded_csv; //php array convert to csv/excel
    exit;
}

我也有同样(或类似)的问题。

在我的情况下，如果我添加一个BOM输出，它工作:

header('Content-Encoding: UTF-8');
header('Content-type: text/csv; charset=UTF-8');
header('Content-Disposition: attachment; filename=Customers_Export.csv');
echo "\xEF\xBB\xBF"; // UTF-8 BOM

我相信这是一个非常丑陋的黑客，但它对我有效，至少对Excel 2007 Windows有效。不确定在Mac上能不能用。

EASY solution for Mac Excel 2008: I struggled with this soo many times, but here was my easy fix: Open the .csv file in Textwrangler which should open your UTF-8 chars correctly. Now in the bottom status bar change the file format from "Unicode (UTF-8)" to "Western (ISO Latin 1)" and save the file. Now go to your Mac Excel 2008 and select File > Import > Select csv > Find your file > in File origin select "Windows (ANSI)" and voila the UTF-8 chars are showing correctly. At least it does for me...

下面是我怎么做的(这是提示浏览器下载csv文件):

header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=file.csv');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
echo "\xEF\xBB\xBF"; // UTF-8 BOM
echo $csv_file_content;
exit();

唯一的一件事，它修复了UTF8编码问题在CSV预览当你在Mac上按空格键。但不是在Excel Mac 2008…不知道为什么