普通的计数器网上有很多了。但是，我们要实现根据ip来计数。比如，上级下发的文件，我们要根据ip来统计下级有没有查看，执行呢？很简单的。
<?php
function getIP() {
if ($_SERVER["HTTP_X_FORWARDED_FOR"])
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
else if ($_SERVER["HTTP_CLIENT_IP"])
$ip = $_SERVER["HTTP_CLIENT_IP"];
else if ($_SERVER["REMOTE_ADDR"])
$ip = $_SERVER["REMOTE_ADDR"];
else if (getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("HTTP_CLIENT_IP"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("REMOTE_ADDR"))
$ip = getenv("REMOTE_ADDR");
else
$ip = "Unknown";
return $ip;
}
?>
<?php
$ip=getIP();
function makeNum(){
global $ip;
if(!file_exists(''.$ip.'.txt')){
$fp=fopen(''.$ip.'.txt','w');
fwrite($fp,"1");
fclose($fp);
$n=1;
}
else{
$fp=fopen(''.$ip.'.txt','r');
$n=fgets($fp);
fclose($fp);
$n++;
$fp=fopen(''.$ip.'.txt','w');
fwrite($fp,$n);
fclose($fp);
}
return $n;
}
$guestsNum=makeNum();
echo "已查看".$guestsNum."次数";
?>