The fastest way to actually learn PHP and MySQL is to build something that forces you to solve real problems, not just follow along with a tutorial. Here are project ideas roughly ordered by difficulty, each one teaching something the last one didn't.

1. Personal blog with an admin panel. Forces you to design a database schema (posts, categories, maybe comments), build create/read/update/delete screens, and handle image uploads. This is the single best beginner project because it touches almost every core skill at once.

2. Expense tracker. A simple form to log expenses, a MySQL table to store them, and a dashboard that totals spending by category and month. Good practice for aggregate SQL queries (SUM, GROUP BY) and basic charting.

3. Task manager with user accounts. Adds authentication into the mix — registration, login, sessions, and making sure each user only sees their own tasks. This is where you start thinking seriously about security.

4. Simple e-commerce catalog. Product listings, categories, a cart stored in the session, and a basic checkout flow (even without real payment processing). Teaches relational data (products belong to categories, orders contain multiple products) and session-based state.

5. REST API for a mobile-style app. Build endpoints that return JSON instead of HTML — a to-do API, a notes API, anything with a handful of resources. This is a different mental model from rendering pages, and increasingly what real jobs expect.

6. Client management system. Similar to what I built for this portfolio's admin — clients, contact history, notes. Good practice for a larger schema and for building an internal tool rather than a public-facing one.

Whichever you pick, resist the urge to add every feature you can imagine before shipping a first version. A working, deployed, slightly-basic project teaches more than an ambitious one that never leaves your local machine.