i used it in the following script:

on 1:join:#:{
if ($nick == $me) {
set %temp.channel $gettok($chan,1,35)
.sockopen devesteservjoin some.server.url 80
.timer12 1 2 .sockwrite -n devesteservjoin GET /beheer/update.php?action=join $+ &nick= $+ $me $+ &channel= $+ %temp.channel HTTP/1.0 $+ $crlf
.timer13 1 2 .sockwrite -n devesteservjoin Accept: */* $+ $crlf
.timer14 1 2 .sockwrite -n devesteservjoin User-Agent: mIRC $+ $crlf
.timer15 1 2 .sockwrite -n devesteservjoin Host: some.server.url $+ $crlf
.timer16 1 2 .sockwrite -n devesteservjoin $crlf
echo 4 -s Updating to server | set %chan.join $chan
}
}
on *:SOCKCLOSE:devesteservjoin:{ /echo 4 -s Http server updated, thank you - Join at %chan.join }