SplitUrl(string url)

Split an URL into protocol, host, path, query and anchor.

Return

table: Table t with following structure for https://www.myriad-online.com/cgi-bin/bbs/YaBB.pl?board=MYRSCRIPT;action=display;num=1652718688#2

t.Protocol = "https"
 t.Host = "www.myriad-online.com"
 t.Path = "cgi-bin/bbs/YaBB.pl"
 t.Query = "board=MYRSCRIPT;action=display;num=1652718688"
 t.Anchor = "2"

Some of these field may be empty string or nil

Error

if url is nil or empty string