Whoa, connecting HTML to an SQL database with PHP can be a real game-changer! Just imagine the possibilities with all that data at your fingertips. I've been working with PHP for years, and let me tell you, it's the perfect language for connecting to SQL databases. It's like peanut butter and jelly - they just go together so well!

Use PHP’s mysqli_connect() or PDO to establish a connection with the MySQL database. Sanitize form input and use SQL queries (preferably prepared statements) to insert data into the database. Check for connection or query errors and display appropriate messages to the user.

The database connection allows your PHP code to interact with MySQL, enabling data storage and retrieval. It refers to connecting your PHP code to a database so you can save and get data. This lets your website store things like user information and display it when needed. This is the PHP code to establish a connection with a MySQL database.

The contact HTML form action is on “contact.php” page. On this page, we will write code for inserting records into the database. For storing data in MySQL as records, you have to first connect with the DB. Connecting the code is very simple. The mysql_connect in PHP is deprecated for the latest version therefore I used it here mysqli_connect.