On Sat, Jan 2, 2016 at 2:08 AM, 水静流深 <1248283536@xxxxxx> wrote: > A huge file was located on the url . > > http://gensho.acc.umu.se/debian-cd/8.2.0/amd64/iso-cd/debian-8.2.0-amd64-lxde-CD-1.iso > > Now i want to download some bytes between 10000bytes and 20000bytes on > the file . > HOW to write the php command? Hi, If I understood you correctly, you can use PHP's curl library and set the range header: http://stackoverflow.com/questions/985455/curl-how-to-limit-size-of-get?rq=1 Adam