Question

求php编写防刷新的网页计数器代码

要求：
1.文本文件.txt存储计数数据，不用sql数据库；
2.用cookies或session判断，24小时内重复刷新不计数；
3.可以返回文本数字

以下代码只能做到简单的统计，重复刷新会+1
<?php

function counter()
{
$count=(int)fgets(@fopen("counter.txt","r"))+1;
if(!$_SESSION['hent']['guest'])
{
$_SESSION['hent']['guest']=1;
fputs(fopen("counter.txt","w+"),$count);
}
return $count;
}

echo counter();

?>

Answer 1

<?
@session_start();
$counter = intval(file_get_contents("countdata.txt"));
if(!$_SESSION['count'])
{
$_SESSION['count'] = true;
$counter++;
$fp = fopen("countdata.txt","w");
fwrite($fp, $counter);
fclose($fp);
}
echo 'document.write("'.$counter.'")';
?>