php如何获取用户的ip地址

1、//方法1：$ip = $_SERVER["REMOTE_ADDR"];echo $ip;

2、//方法2：$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];echo $user_IP;

3、//方法3：function getRealIp(){$ip=false;if(!empty($娄多骋能_SERVER["HTTP_CLIENT_IP"])){$ip = $_SE伊怕锱鳏RVER["HTTP_CLIENT_IP"];}if (!empty($_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();

4、//方法4：if ($HTTP_SERVER_VARS["HTTP_X_FORWARD苇质缵爨ED_FOR"]){$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 ;

5、//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;