php獲取客戶端IP地址的幾種方法

woff

PHP Code one:

1. <?
   
2. //php獲取ip的算法
   
3. $iipp=$_SERVER["REMOTE_ADDR"];
   
4. echo $iipp;
   
5. ?>
   

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PHP Code two:

1. <?php
   
2. //php獲取ip的算法
   
3. $user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
   
4. $user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
   
5. 
   
6. echo $user_IP;
   
7. ?>
   
8. 
   
9. ///////////////////////////////////////////////
   
10. 
    
11. <?
    
12. function get_real_ip(){
    
13. $ip=false;
    
14. if(!empty($_SERVER["HTTP_CLIENT_IP"])){
    
15. $ip = $_SERVER["HTTP_CLIENT_IP"];
    
16. }
    
17. if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
    
18. $ips = explode (", ", $_SERVER['HTTP_X_FORWARDED_FOR']);
    
19. if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
    
20. for ($i = 0; $i < count($ips); $i++) {
    
21.   if (!eregi ("^(10│172.16│192.168).", $ips[$i])) {
    
22.    $ip = $ips[$i];
    
23.    break;
    
24.   }
    
25. }
    
26. }
    
27. return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
    
28. }
    
29. 
    
30. echo get_real_ip();
    
31. ?>
    

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PHP Code three:

1. <?
   
2. //php獲取ip的算法
   
3. if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"])
   
4. {
   
5. $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];
   
6. }
   
7. elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"])
   
8. {
   
9. $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];
   
10. }
    
11. elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"])
    
12. {
    
13. $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];
    
14. }
    
15. elseif (getenv("HTTP_X_FORWARDED_FOR"))
    
16. {
    
17. $ip = getenv("HTTP_X_FORWARDED_FOR");
    
18. }
    
19. elseif (getenv("HTTP_CLIENT_IP"))
    
20. {
    
21. $ip = getenv("HTTP_CLIENT_IP");
    
22. }
    
23. elseif (getenv("REMOTE_ADDR"))
    
24. {
    
25. $ip = getenv("REMOTE_ADDR");
    
26. }
    
27. else
    
28. {
    
29. $ip = "Unknown";
    
30. }
    
31. echo "你的IP:".$ip ;
    
32. ?>  

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PHP Code four:

1. <?
   
2. //php獲取ip的算法
   
3. if(getenv('HTTP_CLIENT_IP')) {
   
4. $onlineip = getenv('HTTP_CLIENT_IP');
   
5. } elseif(getenv('HTTP_X_FORWARDED_FOR')) {
   
6. $onlineip = getenv('HTTP_X_FORWARDED_FOR');
   
7. } elseif(getenv('REMOTE_ADDR')) {
   
8. $onlineip = getenv('REMOTE_ADDR');
   
9. } else {
   
10. $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];
    
11. }
    
12. echo $onlineip;
    
13. ?>  

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