php file download

http://www.loliman3000.com/tech/2fe12fe3c3f0d423a9077414.php

1=fread 2=readfile 3=fpassthru 4=fpassthru+multiple

http://stackoverflow.com/questions/7263923/how-to-force-file-download-with-php

http://blog.lyhdev.com/2012/09/php.html

lighttpd的X-sendfile

http://izero.pixnet.net/blog/post/15008053-%5Bhow-to%5D-%E5%A5%BD%E7%89%A9%E5%95%8A!!-lighttpd%E7%9A%84x-sendfile

7種讀檔方法測速

http://www.storyday.com/html/y2008/2019_which-is-better-readfile-fpassthru-or-header-u0026quotlocation-u0026quot.html

PHP各種引入文件函數的執行效率fpassthru readfile(包含 include)
http://big5.cntv.cn/gate/big5/blog.cntv.cn/11430895-3096371.html