本文實例講述了PHP實現獲取ip地址的5種方法，以及插入用戶登錄日志操作。分享給大家供大家參考，具體如下：
php 獲取ip地址的5種方法，插入用戶登錄日志實例，推薦使用第二種方法
<?php //方法1：$ip = $_SERVER["REMOTE_ADDR"];echo $ip;//方法2：$ip = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];$ip = ($ip) ? $ip : $_SERVER["REMOTE_ADDR"];echo $ip;//方法3：function getRealIp(){ $ip=false; if(!empty($_SERVER["HTTP_CLIENT_IP"])){ $ip = $_SERVER["HTTP_CLIENT_IP"]; } if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']); if ($ip) { array_unshift($ips, $ip); $ip = FALSE; } for ($i = 0; $i < count($ips); $i++) { if (!eregi ("^(10│172.16│192.168).", $ips[$i])) { $ip = $ips[$i]; break; } } } return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);}echo getRealIp();//方法4：if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]){ $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];}elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"]){ $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];}elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"]){ $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];}elseif (getenv("HTTP_X_FORWARDED_FOR")){ $ip = getenv("HTTP_X_FORWARDED_FOR");}elseif (getenv("HTTP_CLIENT_IP")){ $ip = getenv("HTTP_CLIENT_IP");}elseif (getenv("REMOTE_ADDR")){ $ip = getenv("REMOTE_ADDR");}else{ $ip = "Unknown";}echo $ip ;//方法5：if(getenv('HTTP_CLIENT_IP')) { $onlineip = getenv('HTTP_CLIENT_IP');} elseif(getenv('HTTP_X_FORWARDED_FOR')) { $onlineip = getenv('HTTP_X_FORWARDED_FOR');} elseif(getenv('REMOTE_ADDR')) { $onlineip = getenv('REMOTE_ADDR');} else { $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];}echo $onlineip;實例：在用戶登錄時獲取用戶IP，插入到數據庫登錄日志表里
//增加用戶登錄日志$ip = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];$ip = ($ip) ? $ip : $_SERVER["REMOTE_ADDR"];$this->usermodel->addUserlog($userid,$nickname,$ip);function addUserlog($userid,$nickname,$ip) { try { $now = date("Y-m-d H-i-s",time()); $data=array( 'userid'=>$userid, 'nickname'=>$nickname, 'ip'=>$ip, 'logintime'=>$now ); $insert_query = $this->db->insert_string('user_log', $data); $this->db->query($insert_query); return 0; } catch ( Exception $e ) { return -1; }}日志表結構：
CREATE TABLE `user_log` ( `id` bigint(20) NOT NULL AUTO_INCREMENT, `userid` bigint(20) NOT NULL, `nickname` varchar(50) NOT NULL, `ip` varchar(50) NOT NULL, `logintime` datetime NOT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8
希望本文所述對大家PHP程序設計有所幫助。
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