利用php CI force_download($filename, $data) 下载.csv 文件解决文件名乱码，文件内容乱码

2014-07-31 12:53 1047人阅读评论(0) 收藏举报

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php 算法（20）利用php CI force_download($filename, $data) 下载.csv 文件解决文件名乱码，文件内容乱码

php（38）

利用php CI force_download($filename, $data) 下载.csv 文件解决文件名乱码，文件内容乱码。做了很久终于知道了很好的解决方案。

1.加载辅助函数

$this->load->helper('download'); //下载辅助函数
$this->load->helper('string'); //字符编码转换辅助翻书

2.force_download($filename, $data)通过它的代码可以知道$data 必须是字符串，如果不是字符串会出错的。是数组，必须转换成字符串，用函数implode即可，该函数用法见官网，更具我的项目代码如下。

public function download() {
// 输出Excel文件头
//解决IE,firework等浏览器文件名乱码问题
$filename = '已拆回款数据.csv';
$newarray=array();该结果是一个二维数组
if ($this->input->get () !== false) {
$conn = $this->getformdata ();
}
// 输出Excel列名信息
$head = array (
'ID',
'回款号',
'回款金额(分)',
'调整渠道成本',
'回款时间',
'导入SO时间',
'渠道名称',
'合同ID'
);
foreach ( $head as $i => $v ) {
// CSV的Excel支持GBK编码，一定要转换，否则乱码
$head [$i] = utf2gbk($v);
}
$newarray[]=implode(',',$head);
$sql = "select * from sinapay_boss_income where {$conn} order by income_status asc, boss_income_id desc";
$query = $this->db->query ( $sql );
// 计数器
$cnt = 0;
// 每隔$limit行，刷新一下输出buffer，不要太大，也不要太小
$limit = 8000;
foreach ( $query->result_array () as $row ) {
$cnt ++;
if ($limit == $cnt) { // 刷新一下输出buffer，防止由于数据过多造成问题
ob_flush ();
flush ();
$cnt = 0;
}
// 读取表数据
$content = array ();
$content [] =$row ['boss_income_id'];
$content [] =$row ['income_num'];
$content [] =$row ['income_amount'];
$content [] =$row ['modified_cost'];
$content [] =$row ['income_date'];
$content [] =$row ['write_so_month'];
$content [] =utf2gbk($row ['channel_name']);
$content [] =utf2gbk($row ['income_contract_id']);
$newarray[]=implode(',',$content);
}
$newarray=implode("\n",$newarray);
force_download($filename, $newarray);
}
}

3.测试后我发现ie浏览器文件名是乱码，firefox 浏览器文件名也是乱码。于是对辅助函数做了以下的修改，以下加了背景颜色的代码是我添加的。

if ( ! function_exists('force_download'))
{
function force_download($filename = '', $data = '')
{
if ($filename == '' OR $data == '')
{
return FALSE;
}
//ie 浏览器解决文件名是乱码
$filename = urlencode($filename);
$filename = str_replace("+", "%20", $filename);
// Try to determine if the filename includes a file extension.
// We need it in order to set the MIME type
if (FALSE === strpos($filename, '.'))
{
return FALSE;
}
// Grab the file extension
$x = explode('.', $filename);
$extension = end($x);
// Load the mime types
@include(APPPATH.'config/mimes'.EXT);
// Set a default mime if we can't find it
if ( ! isset($mimes[$extension]))
{
$mime = 'application/octet-stream';
}
else
{
$mime = (is_array($mimes[$extension])) ? $mimes[$extension][0] : $mimes[$extension];
}
// Generate the server headers
if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE"))
{
header('Content-Type: "'.$mime.'"');
header('Content-Disposition: attachment; filename="'.$filename.'"');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-Transfer-Encoding: binary");
header('Pragma: public');
header("Content-Length: ".strlen($data));
}elseif(strstr($_SERVER['HTTP_USER_AGENT'], "Firefox")){ //解决firefox 文件名乱码
header('Content-Type: "'.$mime.'"');
header('Content-Disposition: attachment; filename*="utf8\'\'' . $filename . '"');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-Transfer-Encoding: binary");
header('Pragma: public');
header("Content-Length: ".strlen($data));
}else
{
header('Content-Type: "'.$mime.'"');
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary");
header('Expires: 0');
header('Pragma: no-cache');
header("Content-Length: ".strlen($data));
}
exit($data);
}
}

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利用php CI force_download($filename, $data) 下载.csv 文件解决文件名乱码，文件内容乱码

利用php CI force_download($filename, $data) 下载.csv 文件解决文件名乱码，文件内容乱码

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