改进的IP计数器

<?
//require ('common.inc');
$arr_request=array();
if (count($HTTP_GET_VARS))
{
while (list($key,$value)=each($HTTP_GET_VARS))
{
$arr_request[strtolower($key)]=$value;
}
}
if (count($HTTP_POST_VARS))
{
WHILE (list($key,$value)=each($HTTP_POST_VARS))
{
$arr_request[strtolower($key)]=$value;
}
}
$link=@mysql_connect("localhost","kong","kong");
mysql_select_db("mywebdb");
$ip=$REMOTE_ADDR;
$current=getdate(time());
$day=$current["mday"];
$query="select * from addcount where day=\"$day\"";
$result=@mysql_query($query);
if(!$num=@mysql_num_rows($result))
$num=1;
while($row=@mysql_fetch_row($result))
{
if (strcmp($ip,$row[1])==0)
{
$i=1;
$id=$row[0];
$click=$row[3]+1;
$up="update addcount set click_count=click_count+1 where id=$id";
$result2=@mysql_query($up);
// break;
}
$total+=$row[3];
}
$total++;
if(!$i){
$query1="insert into addcount (ip,day,click_count )values ('$ip','$day',1)";
mysql_db_query("mywebdb",$query1,$link);
$click=1;
}
echo "";
echo "你是第" .$num."访问者
";
echo "今天你第".$click."次点击
";
echo "今天总点击".$total."次
";

/
表：
addcount
CREATE TABLE addcount (
id int(6) DEFAULT '0' NOT NULL auto_increment,
ip char(20) NOT NULL,
day int(2) NOT NULL,
click_count int(3) NOT NULL,
PRIMARY KEY (id)
);
/
?>