This tutorial focuses on letting your users upload and save file information in the database using PHP. To achieve this we only need two files, an HTML upload form, and a process page. HTML form allows user choose a file, and when user clicks on upload button, process page will upload the file to the server.

If you are looking for a simple script to navigate next / previous image without refreshing page, this example will do exactly that using jQuery Ajax and PHP.

Sometimes you need to upload and resize image files using PHP, and here you will find the simplest PHP snippet that takes care of your uploaded image files. This snippet should work as it is, but there are several other methods you can combine with it to create a proper functional image uploader, for example you can take a look at Ajax and PHP based image uploader here.

Implementing “Login with Facebook” using just their new PHP SDK is very easy, everything can be accomplished with minimal PHP code, but some of us may want to take it little further to create a nice looking Ajax based login system. Yes, with little bit of Javascript and Facebook PHP SDK, we can create Ajax based Facebook Login system.