Modern PHP MySQL Masterclass from Scratch- Chat Box Project

Discover how to create php variables with a dollar sign, assign values with the assignment operator, and concatenate strings with dot operator to display in the browser; note case sensitivity.

Explore PHP data types by declaring integer, floating point, and boolean variables with practical examples, including 3.14 as a float and true or false as booleans.

Learn to create and manipulate arrays in PHP, assigning names, storing values, and accessing elements by index with square brackets. Display results using print_r and concatenation.

Demonstrate the logical or operator and identity checks in PHP, showing that identical comparisons yield true, that combining conditions determines the outcome, and how browser refresh affects results.

Learn how to use the ternary operator in PHP to simplify if statements, with an age check (age >= 18) that returns a result in the browser.

Explore the PHP spaceship operator, built from <, <=, and >, to compare two values and return 0 if equal or 1 if greater, demonstrated with variables and browser output.

Create a message variable, measure its length with string length counting all characters, including spaces, and convert the string to uppercase or lowercase with strtoupper and strtolower.

Learn to move a form submission to an external php script by creating submit.php and updating the form action to send data to the processor.

Learn how to use phpMyAdmin to create and manage a MySQL database via the graphical interface, run SQL, import data, and explore user accounts.

Create a registration form in the PHP MySQL project by building a post form with inputs for name, email, and password, noting file upload handling and previewing in the browser.

Create a database and tables for a chat box, defining users and messages with auto-incrementing IDs and fields like username, user_image, email, and message.

Connect to a MySQL database using PHP by setting host, user, password, and database name, then establish a mysqli connection to localhost and verify it.

Build a PHP MySQL user registration system that handles form submission, validates username, email, and password, uploads an image, hashes the password, inserts the user, and redirects to login.

Implement the login functionality: validate the form email against the database, verify the hashed password, start a session, and redirect to the index page on success.

Validate user sessions and redirect unauthenticated users to login, fetch the user data, and build a PHP and MySQL chat box that inserts messages into the database and displays them.