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mysql(8) php 算法(20) php(38)
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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。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);
- }
- }