PHP获取客户端Ip及URL示例有什么？

function getonlineip(){//获取用户ip
 if($_SERVER['HTTP_CLIENT_IP'])
 {
  $onlineip=$_SERVER['HTTP_CLIENT_IP']; //用户IP
 }
 else if($_SERVER['HTTP_X_FORWARDED_FOR'])
 {
  $onlineip=$_SERVER['HTTP_X_FORWARDED_FOR']; //代理IP
 }
 else
 {
  $onlineip=$_SERVER['REMOTE_ADDR']; //服务器IP
 }
 return $onlineip;
}
function curPageURL()//获取完整的url
{
 $pageURL = 'http';
 if ($_SERVER["HTTPS"] == "on")
 {
  $pageURL .= "s";
 }
 $pageURL .= "://";
 if ($_SERVER["SERVER_PORT"] != "80")
 {
  $pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];
 }
 else
 {
  $pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];
 }
 return $pageURL;
}