How nginx interacts with php

1. The user sends an http request to the nginx server (the user and the nginx server perform a three-way handshake for TCP connection).

2. nginx will judge the request based on the URI and suffix visited by the user.

3. It can be seen from the second step that the user requests dynamic content. nginx will hand over the request to the fastcgi client and send the user's request to php-fpm through fastcgi_pass. If the user accesses As for static resources, it’s simple. nginx directly returns the static resources requested by the user to the user.

4. After the wrapper receives the request transferred from php-fpm, the wrapper will generate a new thread to call the php dynamic program parsing server.

5. PHP will return the query results to nginx.

6. nginx constructs a response message and returns the result to the user.

This is just one type of nginx. The user's request and the return of the user's request result are performed asynchronously, that is, the resource requested by the user is transferred in nginx, and nginx can be synchronized, which is the parsed resource. , the server returns the resources directly to the user without having to make a transfer in nginx.

Recommended tutorial:nginx tutorial

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