String interpolation in double quotes in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the variable inside double quotes using interpolation.

PHP

<?php
$name = "Alice";
echo "Hello, [1]!";
?>

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

Aname

B$name

C'$name'

D{name}

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the $ sign before the variable name.

Using single quotes which do not interpolate variables.

In PHP, variables inside double quotes are interpolated when prefixed with $. So "$name" prints the variable's value.

2fill in blank

medium

Complete the code to include the variable inside a sentence using double quotes and interpolation.

PHP

<?php
$age = 25;
echo "I am [1] years old.";
?>

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

A$age

B'$age'

Cage

D{age}

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes which do not interpolate variables.

Omitting the $ sign before the variable.

Using $age inside double quotes prints the value of the variable age.

3fill in blank

hard

Fix the error in the code to correctly interpolate the variable inside double quotes.

PHP

<?php
$city = "Paris";
echo "Welcome to [1]!";
?>

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

A{city}

Bcity

C'$city'

D$city

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without $ inside double quotes.

Using single quotes which do not interpolate variables.

Variables inside double quotes must have the $ sign to be interpolated correctly.

4fill in blank

hard

Fill both blanks to correctly interpolate the variable and add a suffix inside double quotes.

PHP

<?php
$score = 90;
echo "Your score is [1][2].";
?>

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

A$score

B%

C points

Dscore

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the $ sign before the variable.

Using % instead of ' points' as suffix.

Use $score to interpolate the variable and add ' points' as a suffix inside the string.

5fill in blank

hard

Fill all three blanks to create a sentence with two interpolated variables and a connector inside double quotes.

PHP

<?php
$firstName = "John";
$lastName = "Doe";
echo "My name is [1] [2] [3].";
?>

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

A$firstName

B$lastName

Cand

Dor

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names without $ sign.

Using 'or' instead of 'and' as connector.

Use $firstName and $lastName to interpolate the variables and 'and' as the connector word.