Note that this script may not return IP Address if the client/user firewall is on or when client is using some proxy software.

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< ?php
 $ipaddress=$_SERVER["REMOTE_ADDR"];
 echo "Your IP ADDRESS: ". $ipaddress;
?>

Another way of retrieving IP Address is using function getenv().

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< ?php
 $userip = $_SERVER["HTTP_X_FORWARDED_FOR"];
 $proxy = $_SERVER["REMOTE_ADDR"];
 $host = @gethostbyaddr($_SERVER["HTTP_X_FORWARDED_FOR"]);
?>

OUTPUT

Server IP ADDRESS: [exec]echo $_SERVER["HTTP_X_FORWARDED_FOR"];[/exec]
User IP ADDRESS: [exec]echo $_SERVER["REMOTE_ADDR"];[/exec]
User HOST ADDRESS: [exec]echo @gethostbyaddr($_SERVER["HTTP_X_FORWARDED_FOR"]);[/exec]

$userip is the IP address of the user thats been passed on by the server. $proxy is the IP address of the server itself and $host is the host address of the user. If your PHP version is less than 4.3 then use $HTTP_SERVER_VARS in place of $_SERVER

Download : PHP Script Get IP Address of Visitor