mod_xsendfile 是一个很小的 Apache2 的模块,用来生成 X-SENDFILE 头。If it encounters the presence of such a header, it will discard all output and send the file specified by that header instead, using Apache internals including all optimizations like caching-headers and sendfile or mmap if configured. It is useful for processing script output of PHP, Perl, or other CGI programs.
配置方法 .htaccess <Files out.php> XSendFile on </Files>
<Files out.php> XSendFile on </Files>