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标题:PHP IE中下载附件问题解决方法
正文:
重点：

1、在IE中下载附件之前要清空缓存。

2、中文文件名要用urlencode编码。
代码如下:
Header("Pragma: "); //不加的话，IE中会提示目标主机无法访问
Header("Cache-Control: "); //不加的话，IE中会提示目标主机无法访问
Header("content-type: $type");
Header("accept-ranges: bytes");
Header("Content-Transfer-Encoding:base64");
Header("accept-length: " . filesize($path_c));
Header("content-disposition: attachment; filename=" .urlencode($filename)); //IE中不用urlencode中文名会出现乱码
readfile($path_c);
exit;

或
代码如下:
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.urlencode(basename($file) )); //IE中不用urlencode中文名会出现乱码
header('Content-Transfer-Encoding: binary'); //二进制传输
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0'); //不加的话，IE中会提示目标主机无法访问
header('Pragma: public'); //不加的话，IE中会提示目标主机无法访问
header('Content-Length: ' . fi
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