Using PHP, MySQL and AJAX Guest Book Application

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Guest Book Application is a good way to know the opinion of your Website viewers as they can share their reviews on your blog or website so in this tutorial, we are going to build a Simple Guest Book Application using PHP and MySQL and with a little bit touch of AJAX so let’s get Started.

Before Coding anything let’s create the database for our guestbook in which all the comments are going to be stored, just execute the below SQL queries to create a database named ‘guestbook’ which is having a table ‘comments’.

Markup

Now we have successfully created our database, now let’s create a script to connect our PHP code with our database(which we have previously created). Create a new file called connection.php and add the following code into it.

PHP

Now we will create a PHP script to insert the data into the database and to show the records from the database. Create a file named “insert_comments.php” and add the following code into it.

PHP

In the above code, we have created a show_comments() function which will show all the records store in the comments table.

Now we have completed about 70% of the work but still, 30% is remaining which is our AJAX code and our CSS code. so let’s create a new file called “ajax.js” and add the following code into it.

JavaScript

The above code will send and receive all the requests and responses to the server asynchronously to access our insert_comments.php file.

AJAX IS A TECHNIQUE TO USE THE JAVASCRIPT’S XMLHTTPREQUEST OBJECT TO SEND A REQUEST TO THE WEB SERVER ASYNCHRONOUSLY OR YOU CAN SAY WITHOUT REFRESHING THE WEB PAGE.

Now we have done all the dirty work now it’s time to design the UI of our application, create a new file called index.ph and add the following code into it.

PHP

We have build up the frame but it is very boring, so let’s add a little bit of styling to it, create a new file “style.css” in the same directory and add the following CSS code into it.

CSS

Congrats you have successfully created a modern day GuestBook application, Try adding some new features into it like the person’s name who had commented, comment time etc.

Thank you for reading.

Give your queries and feedback or leave a message. You can also comment your questions below.

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