The SitePoint PHP blog has posted the second part of their series about the creation of a simple comment posting social site based on PHP, MongoDB and jQuery. In this second part they build on the structure from part one and add in posting and "liking".

In the previous part of the series, we explained the database architecture, post stream design and application flow required for developing our post mechanism wherein the user will be able to post a status, like/unlike other people's statuses and comment on them. This part of the series will drive you through the coding required to implement these functionalities. We will use the application flow and database structure as discussed in the last article. Don't forget to download the code from the github repo if you'd like to follow along.

First he shows you how to get new posts added to the database, POSTed to the backend PHP script. He also shows how to insert the contents back into the page and pull out the latest posts. Next up is the like/unlike-ing of the posts, handled by a simple submission to another backend script.