php 下载文件

 1     public function test(){
 2          $file_name ='/Upload/a1.html';
 3          $filePath = $_SERVER['DOCUMENT_ROOT'].$file_name;
 4             
 5             $out_filename = '附件'.'.'.end(explode('.', $file_name));
 6             file_down($filePath, $file_name,$out_filename);
 7 
 8             
 9             header('Accept-Ranges: bytes');
10             header('Accept-Length: ' . filesize($filePath));
11             header('Content-Transfer-Encoding: binary');
12             header('Content-type: application/octet-stream');
13             header('Content-Disposition: attachment; filename=' . $out_filename);
14             header('Content-Type: application/octet-stream; name=' . $out_filename);
15 
16             if(is_file($filename) && is_readable($filename)){
17                 $file = fopen($filename, "r");
18                 echo fread($file, filesize($filename));
19                 fclose($file);
20             }
21     }
22 
23     // 生成快捷方式  可以通下载特定html 文件 当做网站 快捷方式 
24     public function  kjfs(){
25         $filename = "/Upload/test.html";
26         header("Content-Type: application/force-download");
27         header("Content-Disposition: attachment; filename=".$filename);
28 
29         readfile($filename); 
30     }