005-PHP gets the visitor’s real IP

The content of this article is about PHP getting the real IP of the visitor. Now I share it with everyone. Friends in need can take a look

/**
* 获取来访者的真实IP
*
*/

function getRealIp() {
	static $realip = null;
	if($realip !== null) {
		return $realip;
	}

	if(getenv('REMOTE_ADDR')) {
		$realip = getenv('REMOTE_ADDR');
	} else if(getenv('HTTP_CLIENT_IP')) {
		$realip = getenv('HTTP_CLIENT_IP');
	} else if (getenv('HTTP_X_FROWARD_FOR')) {
		$realip = getenv('HTTP_X_FROWARD_FOR');
	}

	return $realip;	
}

Related recommendations:

004-PHP image upload example

003 - CI in your Using CodeIgniter resources in the class library

The above is the detailed content of 005-PHP gets the visitor’s real IP. For more information, please follow other related articles on the PHP Chinese website!