-
-
/**
- * header与readfile函数应用举例
- * 下载文件 判断权限
- * edit bbs.it-home.org
- */
- $file = get_file_address();// 文件的真实地址(支持url,不过不建议用url)
-
- if (file_exists($file))
- {
- header('Content-Description: File Transfer');
- header('Content-Type: application/octet-stream');
- header('Content-Disposition: attachment; filename='.basename($file));
- header('Content-Transfer-Encoding: binary');
- header('Expires: 0');
- header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
- header('Pragma: public');
- header('Content-Length: ' . filesize($file));
- ob_clean(); //注意此函数的调用,清空但不关闭输出缓存,否则下载的文件头两个字符会是0a
- flush();
- readfile($file); // 输出文件内容
- }
- ?>
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