Importing with use keyword in PHP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the use keyword do in PHP?

The use keyword imports classes, functions, or namespaces so you can use them without writing the full path every time.

beginner

How do you import a class named <code>Car</code> from the namespace <code>Vehicles</code>?

You write: <br>use Vehicles\Car;<br>This lets you use Car directly in your code.

intermediate

Can you import multiple classes from the same namespace using <code>use</code>?

Yes. You can import multiple classes by listing them separated by commas:<br><code>use Vehicles\{Car, Bike, Truck};</code>

intermediate

What is aliasing in PHP use statements?

Aliasing lets you rename an imported class or namespace to a shorter or different name using <code>as</code>.<br>Example:<br><code>use Vehicles\Car as Auto;</code>

beginner

Why is importing with use helpful in PHP?

It makes code cleaner and easier to read by avoiding long full paths. It also helps avoid name conflicts by using aliases.

What does the PHP use keyword do?

A Declares a new class

B Imports classes or namespaces for easier use

C Starts a PHP script

D Defines a function

The use keyword imports classes or namespaces so you can use them without full paths.

How do you import multiple classes from the same namespace?

A use Namespace\{Class1, Class2};

B import Namespace\Class1, Class2;

C use Namespace\Class1, Namespace\Class2;

D include Namespace\Class1, Class2;

You use curly braces to import multiple classes from the same namespace: use Namespace\{Class1, Class2};

What is aliasing in PHP use statements?

A Deleting an imported class

B Creating a new namespace

C Renaming an imported class or namespace

D Calling a function

Aliasing lets you rename an imported class or namespace using as.

Which of these is a correct aliasing example?

A use Vehicles\Car alias Auto;

B use Vehicles\Car to Auto;

C import Vehicles\Car as Auto;

D use Vehicles\Car as Auto;

The correct syntax for aliasing is use Namespace\Class as Alias;

Why should you use the use keyword?

A To make code cleaner and avoid long names

B To run PHP scripts faster

C To declare variables

D To comment code

Using use makes code cleaner and easier to read by avoiding long full paths.

Explain how the use keyword helps when working with namespaces in PHP.

Think about how you avoid writing long names repeatedly.

Describe how to import multiple classes from the same namespace and how to rename one using aliasing.

Remember the special syntax with braces and the keyword 'as'.