<?php

$chk_update=$HTTP_COOKIE_VARS[up_cnt];

function get_hostname(){
        $host=getenv("HTTP_X_FORWARDED_FOR");
        if(!host)
                $host=getenv("REMOTE_ADDR");
        return gethostbyaddr($host);
}

$COUNT_DIR=$DOCUMENT_ROOT."Count/FILES/";
echo $COUNT_DIR."<br>";

$COUNT_FILE_YESDERDAY=$COUNT_DIR.mktime(0,0,0,date("m"),date("d")-1,date("Y")).".count";

$COUNT_FILE_TODAY=$COUNT_DIR.mktime(0,0,0,date("m"),date("d"),date("Y")).".count";

if(empty($chk_update)){
        $host=get_hostname();

        $SAVE_COUNT=@fopen($COUNT_FILE_TODAY,"a+");

        @fputs($SAVE_COUNT,$host."n");

        @fclose($SAVE_COUNT);

        @SetCookie("up_cnt","UPDATE",0,"/");
}

if(@file_exists($COUNT_FILE_TODAY)){
        $today_visit_num=count(@file($COUNT_FILE_TODAY));
}
else $today_visit_num=0;

if(@file_exists($COUNT_FILE_YESTERDAY)){
        $yesterday_visit_num=count(@file($COUNT_FILE_YESTERDAY));
}
else $yesterday_visit_num=0;

if(@is_dir($COUNT_DIR)){
        $chkdir=dir($COUNT_DIR);

        while($entry=$chkdir->read()){
                if(($entry!='.') && ($entry!='..') && eregi(".count",$entry) && (@is_file($COUNT_DIR,$entry))){
                        $total_visit_num+=count(@file($COUNT_DIR,$entry));
                }
        }
}

echo "today : ".number_format($today_visit_num)."<br>";
echo "yesterday : ".number_format($yesterday_visit_num)."<br>";
echo "total : ".number_format($total_visit_num)."<br>";

$tm=time()-86400;
echo date("y년m월d일 H시i분s초",$tm);
?>
=========================count.php 소스입니다.========================================
다른것이 아니고 이 소스에서 보면 file 에 관한 모든 함수는 그 함수 앞에 @ 을 붙였는데..
대체 왜 붙이는겁니까?
책에도 없고.. 이곳에도 찾아보니...
너무도 당연히 알아야 하는것인 모양입니다.

답답하네요..
왜 그런지.. 알려주세요..