Class declaration syntax in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a class named Car.

PHP

<?php
class [1] {
}
?>

Drag options to blanks, or click blank then click option'

ACar

Bcar

Cvehicle

DCarClass

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase class names which is against convention.

Using unrelated names that don't describe the class.

The keyword class is followed by the class name, which should start with a capital letter by convention. Here, Car is the correct class name.

2fill in blank

medium

Complete the code to add a public property named $color to the class.

PHP

<?php
class Bike {
    public [1];
}
?>

Drag options to blanks, or click blank then click option'

A$speed

B$type

C$color

D$weight

Attempts:

3 left

💡 Hint

Common Mistakes

Using property names other than $color.

Forgetting the dollar sign ($) before the property name.

The property name $color matches the instruction to add a public property named $color.

3fill in blank

hard

Fix the error in the class declaration by completing the code.

PHP

<?php
[1] Vehicle {
}
?>

Drag options to blanks, or click blank then click option'

Aclass

Bfunction

Cvar

Dpublic

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'function' instead of 'class' for class declaration.

Omitting the 'class' keyword entirely.

The keyword class is required to declare a class in PHP. Using function or others here is incorrect.

4fill in blank

hard

Fill both blanks to declare a class named Person with a private property $name.

PHP

<?php
[1] Person {
    [2] $name;
}
?>

Drag options to blanks, or click blank then click option'

Aclass

Bpublic

Cprivate

Dfunction

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'public' instead of 'private' for the property.

Using 'function' instead of 'class' for the class declaration.

The class declaration starts with class. The property $name is declared private as requested.

5fill in blank

hard

Fill all three blanks to declare a class named Animal with a protected property $species and a public method speak().

PHP

<?php
[1] Animal {
    [2] $species;
    [3] function speak() {
        echo "Hello!";
    }
}
?>

Drag options to blanks, or click blank then click option'

Aclass

Bprotected

Cpublic

Dprivate

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong visibility keywords for properties or methods.

Forgetting to declare the class with the keyword class.

The class is declared with class. The property $species is protected to allow access in subclasses. The method speak() is public so it can be called from outside.