如何使用多部分下载来远程下载文件？

Question

i want to download a remote file on internet to my host. but i want to download it with multi-part downloading to make it download faster. just the same as download managers .

Answer 1

You have to use Range header while requesting.

Sending Range: bytes=500-999 will download the bytes form 500 to 999;

Note: PHP is not a multi-threaded language. So even you download by multi-part it'll be sequential. Unless you fork multiple process. Though using third-party extensions like curl you can do this through curl_multi_exec

Answer 2

This will be dependent on the server that you are downloading from supporting Range Requests. Read up on Range Requests , and combine this with a multi-threaded cURL , and you'll be able to have more than one download stream working at a time.