libcurl and getting mutiple files

i know that with command line curl i can do this: % curl http://www.server.com/file[01-10].txt and it will get all files: file01.txt - file10.txt how can i achive this with libcurl? when i do curl_setopt($ch, CURLOPT_URL, "http://www.server.com/file[01-10].txt"); it always bombs....is there a certain way of doing this? or can it even be done in libcurl? (i'm using php libcurl). thanks in advance!