Ajax file uploader is useful web tool, which is actually very easy to create with jQuery and PHP, and with new HTML5 FileReader API support, we can do client side file validation before even uploading the file to server. Today we are going to combine all these web features to make an Ajax based file uploader, which can be easily integrated into any HTML forms.  

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.