code1
1 //php获取ip的算法
2 $iipp=$_SERVER["REMOTE_ADDR"];
3 echo $iipp;
code2
01 //php获取ip的算法
02 $user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
03 $user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
04 echo $user_IP;
05
06 function get_real_ip(){
07 $ip=false;
08 if(!empty($_SERVER["HTTP_CLIENT_IP"])){
09 $ip = $_SERVER["HTTP_CLIENT_IP"];
10 }
11 if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
12 $ips = explode (“, “, $_SERVER['HTTP_X_FORWARDED_FOR']);
13 if ($ip) {
14 array_unshift($ips, $ip); $ip = FALSE;
15 }
16 for ($i = 0; $i < count($ips); $i++) {
17 if (!eregi (“^(10│172.16│192.168).”, $ips[$i])) {
18 $ip = $ips[$i];
19 break;
20 }
21 }
22 }
23 return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
24 }
25 echo get_real_ip();
code3
01 //php获取ip的算法
02 if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]){
03 $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];
04 }elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"]) {
05 $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];
06 }elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"]) {
07 $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];
08 }elseif (getenv(“HTTP_X_FORWARDED_FOR”)){
09 $ip = getenv(“HTTP_X_FORWARDED_FOR”);
10 }elseif (getenv(“HTTP_CLIENT_IP”)){
11 $ip = getenv(“HTTP_CLIENT_IP”);
12 }elseif (getenv(“REMOTE_ADDR”)){
13 $ip = getenv(“REMOTE_ADDR”);
14 }else{
15 $ip = “Unknown”;
16 }
17 echo “你的IP:”.$ip ;
code4
01 //php获取ip的算法
02 if(getenv(‘HTTP_CLIENT_IP’)) {
03 $onlineip = getenv(‘HTTP_CLIENT_IP’);
04 } elseif(getenv(‘HTTP_X_FORWARDED_FOR’)) {
05 $onlineip = getenv(‘HTTP_X_FORWARDED_FOR’);
06 } elseif(getenv(‘REMOTE_ADDR’)) {
07 $onlineip = getenv(‘REMOTE_ADDR’);
08 } else {
09 $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
10 }
11 echo $onlineip;