這篇文章主要介紹了php實現統計網站在線人數的方法,通過獲取服務器端網絡參數及文本文件讀寫實現統計在線人數的功能,非常簡單實用,需要的朋友可以參考下
本文實例講述了php實現統計網站在線人數的方法。分享給大家供大家參考。具體實現方法如下:
- <?php
- function getIpAddress() { // 取得當前用戶的IP地址
- if (getenv('HTTP_CLIENT_IP')) {
- $ip = getenv('HTTP_CLIENT_IP');
- } elseif (getenv('HTTP_X_FORWARDED_FOR')) {
- $ip = getenv('HTTP_X_FORWARDED_FOR');
- } elseif (getenv('REMOTE_ADDR')) {
- $ip = getenv('REMOTE_ADDR');
- } else {
- $ip = $_SERVER['REMOE_ADDR'];
- }
- return $ip;
- }
- function writeover($filename,$data,$method = 'w',$chmod = 0){
- $handle = fopen($filename, $method);
- !handle && die("文件打開失敗");
- flock($handle, LOCK_EX);
- fwrite($handle, $data);
- flock($handle, LOCK_UN);
- fclose($handle);
- $chmod && @chmod($filename, 0777);
- }
- function count_online_num($time, $ip) {
- $fileCount = './count.txt';
- $count = 0;
- $gap = 900; //15分鐘不刷新頁面就
- if (!file_exists($fileCount)) {
- $str = $time . "/t" . $ip . "/r/n";
- writeover($fileCount, $str, 'w', 1);
- $count = 1;
- } else {
- $arr = file($fileCount);
- $flag = 0;
- foreach($arr as $key => $val) {
- $val= trim($val);
- if ($val != "") {
- list($when, $seti) = explode("/t", $val);
- if ($seti ==$ip) {
- $arr[$key] = $time . "/t" . $seti;
- $flag = 1;
- } else {
- $currentTime = time();
- if ($currentTime - $when > 900) {
- unset($arr[$key]);
- }else{
- $arr[$key]=$val;
- }
- }
- }
- }
- if ($flag == 0) {
- array_push($arr, $time . "/t" . $ip);
- }
- $count = count($arr);
- $str = implode("/r/n", $arr);
- $str.="/r/n";
- writeover($fileCount, $str, 'w', 0);
- unset($arr);
- }
- return $count;
- }
- $time = time();
- $ip = getIpAddress();
- $online_num = count_online_num($time,$ip);
- echo $online_num;
- ?>
希望本文所述對大家的php程序設計有所幫助。
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