PHP 8 OOP Quiz

What is one of the main advantages of PHP 8 over its previous versions?

• Reduced file size

• JIT Compiler for improved performance

• Better browser support

• New file system

Which feature allows passing arguments based on parameter names in PHP 8?

• Match Expressions

• Named Arguments

• Union Types

• Default Parameters

What is a class in PHP OOP?

• A variable

• A data type

• A blueprint for creating objects

• A loop structure

What keyword is used to create a class instance?

• static

• this

• new

• get

What is the output of this code? $car = new Car("red", "Toyota"); echo $car->getDescription();

• Toyota red car

• This car is a red Toyota.

• Car object created

• red Toyota

What is the purpose of the __construct method in a class?

• To delete properties

• To initialize object properties

• To print the class

• To inherit another class

Given this code snippet: function foo(int|float $value): int|float { return $value; } echo foo(3.5); //What will be the output?

• int

• 3.5

• Error

• Float

Why would a developer use Union Types in PHP 8?

• To simplify loops

• To handle multiple databases

• To allow variables to accept multiple types

• To replace arrays

Consider this class: class Car { public string $color; public function getColor(): string { return $this->color; } } //Which statement correctly assigns and accesses the color?

• $car = Car("red"); echo getColor();

• $car->color = "red"; echo $car->getColor();

• Car.color = "red"; getColor();

• color = red; echo $car.getColor();

You need to create multiple objects with different properties from a single template. Which concept applies?

• Function declaration

• Array creation

• Class instantiation

• Global variable assignment