Welcome back! You've learned so much about creational patterns in PHP, and it's time to apply what you know to a real-world project: a banking system. In this unit, we'll focus on using creational patterns to manage and simplify the creation of banking system components.

Before we dive in, let's quickly recap the creational patterns we'll use:

1. Singleton Pattern: Ensures a class has only one instance and provides a global point of access to it.
2. Factory Method Pattern: Defines an interface for creating an object but allows subclasses to alter the type of objects that will be created.
3. Builder Pattern: Separates the construction of a complex object from its representation, allowing the same construction process to create various representations.

We will implement these patterns to create a logger and accounts for our banking system.

Let's see what you'll build in this unit. You will create:

1. Banking Application with Singleton and Factory Patterns: You'll use Singleton for Logger and Factory for Loan Management.
2. Accounts using the Builder Pattern: Different types of accounts (savings and current) created via builders.
3. Account Factories using the Factory Pattern: Factories that will instantiate different types of accounts.
4. Code Integration: Comprehensive integration of these patterns into a cohesive system.

Ready to start building? Let's dive into the practice section together!