php 取得客户端IP地址代码

//开源代码

function getip(){

if (getenv("http_client_ip") && strcasecmp(getenv("http_client_ip"), "unknown"))

$ip = getenv("http_client_ip"); //开源

else if (getenv("http_x_forwarded_for") && strcasecmp(getenv("http_x_forwarded_for"), "unknown"))

$ip = getenv("http_x_forwarded_for"); //

else if (getenv("remote_addr") && strcasecmp(getenv("remote_addr"), "unknown"))

$ip = getenv("remote_addr");

else if (isset($_server[@#remote_addr@#]) && $_server[@#remote_addr@#] && strcasecmp($_server[@#remote_addr@#], "unknown"))

//

$ip = $_server[@#remote_addr@#];

else

$ip = "unknown";

return($ip);

}

?> 

判断邮箱地址  

function checkemail($inaddress)

{

return (ereg("^([a-za-z0-9_-])+@([a-za-z0-9_-])+(.[a-za-z0-9_-])+",$inaddress));

} //phpfensi.com

?> 

function getip() { //获取ip

if ($_server["http_x_forwarded_for"])

$ip = $_server["http_x_forwarded_for"]; //

else if ($_server["http_client_ip"])

$ip = $_server["http_client_ip"];

else if ($_server["remote_addr"])

$ip = $_server["remote_addr"]; //

else if (getenv("http_x_forwarded_for"))

$ip = getenv("http_x_forwarded_for");

else if (getenv("http_client_ip"))

$ip = getenv("http_client_ip"); //

else if (getenv("remote_addr"))

$ip = getenv("remote_addr");

else

$ip = "unknown";

return $ip;

}

?>