PHP强制下载PDF文件的代码

3. forceDownload("pdfdemo.pdf");

4. function forceDownload($filename) {

5. if (false == file_exists($filename)) {

6. return false;
7. }

8. // http headers

9. header('Content-Type: application-x/force-download');
10. header('Content-Disposition: attachment; filename="' . basename($filename) .'"');
11. header('Content-length: ' . filesize($filename));

12. // for IE6

13. if (false === strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 6')) {
14. header('Cache-Control: no-cache, must-revalidate');
15. }
16. header('Pragma: no-cache');

17. // read file content and output

18. return readfile($filename);;
19. }

说明： 以上实现一个函数forceDownload()，然后通过调用该函数即可实现php强制下载文件。