1. <?
2. //开源代码
3. function getip(){
4. if (getenv("http_client_ip") && strcasecmp(getenv("http_client_ip"), "unknown"))
5. $ip = getenv("http_client_ip"); //开源
6. else if (getenv("http_x_forwarded_for") && strcasecmp(getenv("http_x_forwarded_for"), "unknown"))
7. $ip = getenv("http_x_forwarded_for"); //
8. else if (getenv("remote_addr") && strcasecmp(getenv("remote_addr"), "unknown"))
9. $ip = getenv("remote_addr");
10. else if (isset($_server[@#remote_addr@#]) && $_server[@#remote_addr@#] && strcasecmp($_server[@#remote_addr@#], "unknown"))
11. //
12. $ip = $_server[@#remote_addr@#];
13. else
14. $ip = "unknown";
15. return($ip);
16. }
17. ?>
18. 判断邮箱地址
19. <?
20. function checkemail($inaddress)
21. {
22. return (ereg("^([a-za-z0-9_-])+@([a-za-z0-9_-])+(.[a-za-z0-9_-])+",$inaddress));
23. } //phpfensi.com
24. ?>
25. <?
26. function getip() { //获取ip
27. if ($_server["http_x_forwarded_for"])
28. $ip = $_server["http_x_forwarded_for"]; //
29. else if ($_server["http_client_ip"])
30. $ip = $_server["http_client_ip"];
31. else if ($_server["remote_addr"])
32. $ip = $_server["remote_addr"]; //
33. else if (getenv("http_x_forwarded_for"))
34. $ip = getenv("http_x_forwarded_for");
35. else if (getenv("http_client_ip"))
36. $ip = getenv("http_client_ip"); //
37. else if (getenv("remote_addr"))
38. $ip = getenv("remote_addr");
39. else
40. $ip = "unknown";
41. return $ip;
42. }
43. ?>