php读取与下载csv文件的示例代码

2. $fileName = "prefs.csv";
3. header('Content-Type: application/octet-stream');
4. header('Content-Disposition: attachment; filename=' . $fileName);
5. header('Content-Transfer-Encoding: binary');
6. header('Content-Length: ' . filesize($fileName));
7. readfile($fileName);

例2，字符串形式下载csv文件。

2. $fileName = "pref_" . date("YmdHis") . ".csv";
3. header('Content-Type: application/octet-stream');
4. header('Content-Disposition: attachment; filename=' . $fileName);
5. echo $csv;