How to get the real IP address of the remote client in PHP_PHP Tutorial

(1).REMOTE_ADDR: The ip address of the user's computer browsing the current page

(2).HTTP_X_FORWARDED_FOR: The gateway of the user's computer browsing the current page

(3).HTTP_CLIENT_IP: Client's ip

Use $_SERVER["REMOTE_ADDR"] in PHP to get the client's IP address. However, if the client uses a proxy server to access, what you get is the IP address of the proxy server, not the real one. Client IP address. To obtain the client's real IP address through a proxy server, use $_SERVER["HTTP_X_FORWARDED_FOR"] to read it.

However, something to note is that not every proxy server can use $_SERVER["HTTP_X_FORWARDED_FOR"] to read the real IP of the client. Some of the IPs read by this method are still the IP of the proxy server. .

Another thing to note is that if the client does not access through a proxy server, the value obtained with $_SERVER["HTTP_X_FORWARDED_FOR"] will be empty.

http://www.bkjia.com/PHPjc/324054.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/324054.htmlTechArticle(1).REMOTE_ADDR: The IP address of the user’s computer browsing the current page (2).HTTP_X_FORWARDED_FOR: Browsing the current page The gateway of the user's computer (3).HTTP_CLIENT_IP: The client's ip is used in PHP...