php用session制作网站仿恶意刷新计数器

<?php
session_start();/*启动session*/
if(!isset( $_SESSION["user"]))/*检测用户是否是首次访问*/
{
 $_SESSION["user"]="user";
 $_SESSION["count"]="count";
}
else{$_SESSION["count"]="no";}
$filename=‘count.text‘;
if(!file_exists($filename)) $counte=0;
else $counte=file_get_contents($filename);
if($_SESSION[‘count‘]=="count"){/*防止用户反复刷新*/
$_SESSION[‘user‘]=‘true‘;
$counte++;/*增加访客次数*/
}
echo "累积到访客人数：$counte";
file_put_contents($filename, $counte);/*将计数结果写入文件*/

?>