PHP实现获取ip地址的5种方法，以及插入用户登录日志操作示例_php技巧_

 //增加用户登录日志 $ip = ($_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; } } 

 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