Enums in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a basic enum named Color.

PHP

<?php
enum [1] {
    case RED;
    case GREEN;
    case BLUE;
}

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AColor

BColors

CCOLOR

Dcolor

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase enum name like 'color' which is not conventional.

Using plural form 'Colors' which is not required.

The enum name should be Color with uppercase first letter as per convention.

2fill in blank

medium

Complete the code to access the GREEN case of the Color enum.

PHP

<?php
$green = Color::[1];

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AGreen

BgreenCase

Cgreen

DGREEN

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or camelCase which will cause errors.

Using plural or modified case names.

Enum cases are accessed using uppercase names exactly as declared, so GREEN is correct.

3fill in blank

hard

Fix the error in the enum declaration by completing the missing keyword.

PHP

<?php
[1] Color {
    case RED;
    case BLUE;
}

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Aclass

Binterface

Cenum

Dtrait

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'class' or 'interface' instead of 'enum'.

Forgetting the keyword entirely.

The keyword to declare an enum in PHP is enum.

4fill in blank

hard

Fill both blanks to create a backed enum with string values.

PHP

<?php
enum Status: [1] {
    case ACTIVE = [2];
    case INACTIVE = 'inactive';
}

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Astring

B'active'

Cint

D'active_status'

Attempts:

3 left

💡 Hint

Common Mistakes

Using int type but assigning string values.

Not quoting string values.

Backed enums require specifying the type like string and assigning string values like 'active'.

5fill in blank

hard

Fill all three blanks to iterate over enum cases and print their names.

PHP

<?php
foreach (Status::[1]() as [2]) {
    echo [3]->name . PHP_EOL;
}

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Acases

Bcase

C$status

D$case

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong method name like 'case()' instead of 'cases()'.

Using variable names without $ sign.

Trying to access name as a method instead of property.

Use cases() to get all enum cases, iterate with a variable like $case, and access the name property.