I will show you how to create WordPress like add tags using Codeigniter and jQuery. This add tags tutorial example is very helpful to implement the multiple tags adding functionality for a blog. In this example, tags are added to the textarea just by “type and press the Enter key”. Codeigniter controller stores tags into the database table and returns response as success or failure message from the controller. As a validation step I have added to check if you have input at least one tag.