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Get IP address in PHP

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How to get the ip address of the user.

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  1. function getIP() {
  2. 	$ip="";
  3. 	if (getenv("HTTP_CLIENT_IP")) $ip = getenv("HTTP_CLIENT_IP");
  4. 		else if(getenv("HTTP_X_FORWARDED_FOR")) $ip = getenv("HTTP_X_FORWARDED_FOR");
  5. 		else if(getenv("REMOTE_ADDR")) $ip = getenv("REMOTE_ADDR");
  6. 		else $ip = "";
  7. 	return $ip;
  8. }

URL: http://www.barattalo.it/2009/12/03/how-many-users-are-connected/

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