<?php
//文件名字
$filename = "ip.txt";
if (isset($_SERVER['HTTP_CLIENT_IP']))
{
$clientip = $_SERVER['HTTP_CLIENT_IP'];
}elseif (isset($_SERVER['HTTP_X_FORWARD_FOR']))
{
$clientip = $_SERVER['HTTP_X_FORWARD_FOR'];
}else
{
$clientip = $_SERVER['REMOTE_ADDR'];
}
//打开文件(文件不存在自动建立)
if (!$fp = fopen($filename, "a+"))
{
echo "不能打开文件$";
exit;
}
//写入的时候还判断是否已经有重复数据
while(!feof($fp))
{
$line = fgets($fp);
if($line == ($clientip."\n"))
{
exit; //有重复数据就退出;
}
}
// 写入文件
if(!fwrite($fp,$clientip."\n"))
{
echo "不能写入到文件$filename" ;
exit;
}
//已经完成写入文件
fclose($fp);
?>
posted on 2007-09-19 10:46
-274°C 阅读(1416)
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