公网IP地址就是指外网IP地址了,就是在用户访问我们php页面时我们可以获到用户的IP地址了,而这个IP地址就叫做公网IP地址了,下面整理了两个函数一起看看.

方法1:获取客户端公网IP地址PHP,代码如下:

1. /**
2. * 获取真实IP地址
3. */
4. function get_real_ip(){
5. if ( getenv( "HTTP_CLIENT_IP" ) && strcasecmp( getenv( "HTTP_CLIENT_IP" ), "unknown" ) ){
6. $ip = getenv( "HTTP_CLIENT_IP" );
7. }else if ( getenv( "HTTP_X_FORWARDED_FOR" ) && strcasecmp( getenv( "HTTP_X_FORWARDED_FOR" ), "unknown" ) ){
8. $ip = getenv( "HTTP_X_FORWARDED_FOR" );
9. }else if (getenv( "REMOTE_ADDR" ) && strcasecmp( getenv( "REMOTE_ADDR" ), "unknown" ) ){
10. $ip = getenv( "REMOTE_ADDR" );
11. }else if ( isset( $_SERVER[ 'REMOTE_ADDR' ] ) && $_SERVER[ 'REMOTE_ADDR' ]
12. && strcasecmp( $_SERVER[ 'REMOTE_ADDR' ], "unknown" ) ){
13. $ip = $_SERVER[ 'REMOTE_ADDR' ];
14. }else{
15. $ip = "unknown";
16. }
17. if ( strpos( $ip, ',' ) ){
18. $ipArr = explode( ',', $ip );
19. $ip = $ipArr[ 0 ];
20. }
21. return $ip;
22. }

方法2:获取IP地址PHP,代码如下:

1. function GetRealIP() {
2. static $realip;
3. if (isset($_SERVER)){
4. if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
5. $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
6. } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
7. $realip = $_SERVER["HTTP_CLIENT_IP"];
8. } else {
9. $realip = $_SERVER["REMOTE_ADDR"];
10. }
11. } else {
12. if (getenv("HTTP_X_FORWARDED_FOR")){
13. $realip = getenv("HTTP_X_FORWARDED_FOR");
14. } else if (getenv("HTTP_CLIENT_IP")) {
15. $realip = getenv("HTTP_CLIENT_IP");
16. } else {
17. $realip = getenv("REMOTE_ADDR");
18. } //开源软件:phpfensi.com
19. }
20. if (strpos($realip, ',') === false) {
21. $sUserIp = $realip;
22. } else {
23. $arrUserIp = explode(',' , $realip);
24. $sUserIp = $arrUserIp[0];
25. }
26. return $sUserIp;
27. }

两段代码的效果是一样的,不信大家可以试一下了都非常的好用了.