<? $duration = 300; $sql = "select * from guestinfo where (leavetime is null or leavetime='') and ( UNIX_TIMESTAMP(NOW())-UNIX_TIMESTAMP(refreshtime))>$duration"; $result=@mysql_query($sql); while($row=@mysql_fetch_array($result)) { $id = $row['id']; $sql = "update guestinfo set leavetime=now() where id='$id'"; mysql_query($sql);
} $sql = "select * from guestinfo where ipaddress='$REMOTE_ADDR' and (leavetime is null or leavetime='')"; $result = @mysql_query($sql); if($row=@mysql_fetch_array($result)) { $id = $row['id']; $sql="update guestinfo set refreshtime=now() where id='$id'"; mysql_query($sql); } else { $sql = "insert into guestinfo(ipaddress,host,cometime,refreshtime) values('$REMOTE_ADDR','$REMOTE_HOST',now(),now())"; mysql_query($sql); } $date= mktime(0,0,0,date("m"),date("d"),date("Y")); $sql = "select count(*) from guestinfo where UNIX_TIMESTAMP(refreshtime)> $date"; $result = mysql_query($sql); if($result) { $row = mysql_fetch_array($result); $todayaccess = $row["count(*)"]; } &nbs