当点击帖子时链接到另一个页面php

I am not looking for the code, but I am wondering how I would go about solving this issue. I have a simple site where a user submits form data that is stored on a database and then what they wrote is displayed on the mainpage each post in its own section. What would be need to make it is I can click on a post on the main page and be directed to a page displaying only that post so it would be like example.com/posts.php?id=$postId. What is the best way to go about this issue?I am not looking for the code, but I am wonderi