php文件下载的应用实例
本文章为你提供这款php文件下载代码是一款利用header把文件代码发送到客户端的浏览器进行下载,php实例代码如下:
- <?php
- function download($file_dir,$file_name)
-
-
-
- {
- $file_dir = chop($file_dir);
-
- if($file_dir != '')
- {
- $file_path = $file_dir;
- if(substr($file_dir,strlen($file_dir)-1,strlen($file_dir)) != '/')
- $file_path .= '/';
- $file_path .= $file_name;
- }
- else
- $file_path = $file_name;
-
-
- if(!file_exists($file_path))
- {
- echo '对不起,你要下载的文件不存在。';
- return false;
- }
- $file_size = filesize($file_path);
-
- header("Content-type: application/octet-stream");
- header("Accept-Ranges: bytes");
- header("Accept-Length: $file_size");
- header("Content-Disposition: attachment; filename=".$file_name);
-
- $fp = fopen($file_path,"r");
- $buffer_size = 1024;
- $cur_pos = 0;
-
- while(!feof($fp)&&$file_size-$cur_pos>$buffer_size)
- {
- $buffer = fread($fp,$buffer_size);
- echo $buffer;
- $cur_pos += $buffer_size;
- }
-
- $buffer = fread($fp,$file_size-$cur_pos);
- echo $buffer;
- fclose($fp);
- return true;
- }
- ?>