PHP - Get Users IP Address

Get Users IP Address 

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<?php class datasource {  function getIP() {   $ipaddress = '';   if (isset($_SERVER['HTTP_CLIENT_IP']))    $ipaddress = $_SERVER['HTTP_CLIENT_IP'];   else if(isset($_SERVER['HTTP_X_FORWARDED_FOR']))    $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];   else if(isset($_SERVER['HTTP_X_FORWARDED']))    $ipaddress = $_SERVER['HTTP_X_FORWARDED'];   else if(isset($_SERVER['HTTP_FORWARDED_FOR']))    $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];   else if(isset($_SERVER['HTTP_FORWARDED']))    $ipaddress = $_SERVER['HTTP_FORWARDED'];   else if(isset($_SERVER['REMOTE_ADDR']))    $ipaddress = $_SERVER['REMOTE_ADDR'];   else    $ipaddress = 'UNKNOWN';   return $ipaddress;  } }   $clasgetip = new datasource; $ipaddress = $clasgetip->getIP(); echo $ipaddress; ?>