Match expression (PHP 8) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to return the correct day name using match expression.

PHP

<?php
$dayNumber = 3;
$dayName = match($dayNumber) {
    1 => 'Monday',
    2 => 'Tuesday',
    [1] => 'Wednesday',
    4 => 'Thursday',
    5 => 'Friday',
    6 => 'Saturday',
    7 => 'Sunday',
    default => 'Invalid day'
};
echo $dayName;

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

A0

B3

C5

D8

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number that does not match Wednesday, like 5 or 0.

Forgetting to use the exact number for the case.

The match expression checks the value of $dayNumber. For 3, it should return 'Wednesday'. So the blank must be filled with 3.

2fill in blank

medium

Complete the code to return the correct message for a given status code using match expression.

PHP

<?php
$statusCode = 404;
$message = match($statusCode) {
    200 => 'OK',
    400 => 'Bad Request',
    [1] => 'Not Found',
    500 => 'Server Error',
    default => 'Unknown Status'
};
echo $message;

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

A404

B200

C300

D500

Attempts:

3 left

💡 Hint

Common Mistakes

Using 300 or 200 which do not correspond to 'Not Found'.

Confusing 500 with 404.

The status code 404 corresponds to 'Not Found'. So the blank must be 404.

3fill in blank

hard

Fix the error in the match expression to correctly handle fruit colors.

PHP

<?php
$fruit = 'apple';
$color = match($fruit) {
    'banana' => 'yellow',
    'apple' => [1],
    'grape' => 'purple',
    default => 'unknown'
};
echo $color;

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

A'red'

Bred

C"red"

D'green'

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted strings like red which cause errors.

Using double quotes which is valid but not the intended answer here.

In PHP, string values in match arms must be quoted. So 'red' is correct. Using unquoted red causes an error.

4fill in blank

hard

Fill both blanks to create a match expression that returns the season for a given month number.

PHP

<?php
$month = 11;
$season = match(true) {
    $month >= 3 && $month <= 5 => [1],
    $month >= 6 && $month <= 8 => [2],
    $month >= 9 && $month <= 11 => 'Autumn',
    default => 'Winter'
};
echo $season;

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

A'Spring'

B'Summer'

C'Winter'

D'Autumn'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the seasons for the month ranges.

Forgetting to quote the season names.

The match expression uses conditions to check the month. Months 3-5 are Spring, 6-8 are Summer. So blanks must be 'Spring' and 'Summer'.

5fill in blank

hard

Fill all three blanks to create a match expression that returns the type of a variable.

PHP

<?php
$var = 3.14;
$type = match(gettype($var)) {
    [1] => 'integer',
    [2] => 'string',
    [3] => 'float',
    default => 'other'
};
echo $type;

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

A'integer'

B'string'

C'double'

D'float'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'float' instead of 'double' for the float type.

Not quoting the type strings.

The gettype() function returns 'integer', 'string', or 'double' for floats. So the blanks must be 'integer', 'string', and 'double'.