php记录访问者IP地址的代码
时间:2021-07-01 10:21:17
帮助过:99人阅读
- //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);
- ?>
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