##PHP Developer Interview: What you should know
- What’s the difference between " self " and " this " ?
- What is a " Static Class "? Why use it?
- What is a Closure?
- Describe the difference between Public, Protected, and Private.
- What is dependency injection? Why is used? How does it relate to Composition?
- What does “ &= “ mean, and what kind of operator is it?
- Explain Abstract Class?
- What is a natural join? What is a Left or Right join?