What is Nginx Reverse Proxy

Nginx reverse proxy means that Nginx acts as a proxy server that receives requests from clients, forwards the requests to a back-end server, and returns the back-end server's response to the client. This approach can help improve the security and performance of a website, as well as enable features such as load balancing and caching.

PHP and Nginx reverse proxy configuration steps

When configuring PHP and Nginx reverse proxy, you need to install Nginx and PHP first, and then do the relevant configuration. First, you need to add reverse proxy configuration information in the configuration file of Nginx, specifying the address and port of the back-end server. Next, you need to configure the relevant parameters of PHP to ensure that PHP can communicate with Nginx normally. Finally, you need to restart the Nginx service to make the configuration take effect.

Below is a simple example code that demonstrates how to configure a reverse proxy in Nginx and forward requests to a PHP backend server:

server {
listen 80; server_name example.com; server_name
server_name example.com;

location / {
proxy_pass http://php_backend_server; proxy_set_header
proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header
proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_addr
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}

Demonstration

Let's say we have a PHP backend server running at 127.0.0.1:9000 that we want to serve via Nginx reverse proxy. First, we need to add configuration information to the Nginx configuration file similar to that in the example above. Then, restart the Nginx service and visit example.com, you will be able to see that Nginx successfully forwards the request to the PHP backend server and returns the response to the client.

With the above configuration, we have successfully realized the reverse proxy of PHP and Nginx, which improves the security and performance of the website, as well as the functions of load balancing and caching.