Building Database Web App PHP | OOP | PDO | AJAX | MySQL

Master PHP syntax by placing code inside the PHP tag and using echo to display text or numbers. End statements with semicolons and use // for single-line comments.

Explore PHP variables, including dynamic vs static values and strings or integers, and use logical and comparison operators to evaluate conditions and control flow.

Learn how to implement conditional statements using if, else, and else if to execute actions based on conditions, with PHP examples for login redirects and age-based access.

Define three string and three integer variables, create an associative array, and apply if-else logic to enforce age 18 to 49, then echo the second value.

Learn how to use loops in PHP to iterate through database data with foreach, handling arrays and key value pairs efficiently.

Explore what functions are in PHP, how to define a function as a block of statements, and how to call it with arguments or parameters to execute tasks.

Learn how to include and require PHP files to access variables and functions across pages, compare include and require, and use superglobals and sessions to share data.

Explore how super globals like $_POST, $_GET, and $_SERVER enable form data processing in PHP, including method choices, file handling, and secure data flow for database web apps.

Master string concatenation in PHP and JavaScript by joining values with the correct operators, using quotes and variables, and echoing the results to display inputs such as emails.

Develop a PHP backend for a customer form using superglobals, sanitization, and validation; implement a session to persist username and email, and create length-check function to display data for support.

Learn how objects in object oriented programming encapsulate properties and functions within a class, and how instantiation creates new objects from a class.

Learn how a class in PHP is a template that holds properties and methods; create objects from a class using the new keyword.

Learn how to define properties and methods in a PHP class, access them with $this->, and instantiate objects to build simple car examples with name, speed, and type.

Explore how public, private, and protected access modifiers control property and method access from outside and inside a class, using objects.

Learn how class inheritance in PHP enables a child class to inherit properties and methods from a parent class, override members, and manage access with public, private, and protected modifiers.

Learn how to implement exception handling in PHP using an exception class to store and retrieve error messages with try-catch blocks and the getMessage method, including database connection errors.

Explore PHP object-oriented design by building a class with properties and static members, a welcome method, a secret word validator of eight characters, and a child class extending it.

Explore MySQL basics with phpMyAdmin, navigate databases and tables, and learn to create databases and use forms to post and fetch data via PHP with PDO.

Test database connections in PHP using the manual mysqli approach and PDO with try-catch, using localhost, username, password, and database name. Review sql syntax for select, insert, and update.

Display database data by looping through results with a while loop, fetch associative arrays, and render full name and email in an HTML table using PHP and PDO.

Explore how the PDO class handles prepared statements, uses prepare to create statements, executes them, and retrieves the last insert id to confirm success.

Develop a PHP database class using PDO, with properties for host, user, password, and database, plus methods to connect, execute statements, and fetch all data; test the connection.

Learn how to collect form data, validate inputs like email, password, and full name, and securely insert them into a MySQL database using PHP PDO with bindValue and execute.

Update data into the database using a PHP form by fetching the user id with GET, binding form fields, and submitting via AJAX for seamless updates.

Explore how Ajax uses the XMLHttpRequest object to send, receive, and post data to server-side PHP scripts in the background, enabling dynamic updates without page refresh.

Explore jQuery ajax .ajax() and .post() methods to send data to a server script, using data, serialize, and form handling to interact with PHP and MySQL databases.

Explore how to submit a form with jQuery AJAX .post(), sending serialized data to a PHP processor, prevent the page refresh, and reset the form after a successful AJAX submission.

Create and use helper functions in PHP to trim and sanitize input, validate emails, and redirect. Implement session-based error messages and a password hashing utility in procedural code.