String type (single vs double quotes) in PHP - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a string with single quotes.

PHP

$greeting = [1]Hello World[1];

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

A/

B"

C'

D`

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes when single quotes are required.

Using backticks which are for shell execution in PHP.

Single quotes are used to create a string literal without variable interpolation in PHP.

2fill in blank

medium

Complete the code to create a string with double quotes.

PHP

$name = [1]John[1];

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

A"

B'

C`

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes when double quotes are needed for variable parsing.

Using backticks which are not for strings.

Double quotes allow variable interpolation and special characters in PHP strings.

3fill in blank

hard

Fix the error in the code to correctly print the variable inside the string.

PHP

echo [1]Hello, $user![1];

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

A/

B'

C`

D"

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes which print the variable name literally.

Using backticks which execute shell commands.

Double quotes are needed to parse the variable $user inside the string.

4fill in blank

hard

Fill both blanks to create a string that includes a variable without parsing it.

PHP

$text = [1]The variable is $var[2];

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

A'

B"

C`

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes which parse the variable.

Using mismatched quotes causing syntax errors.

Single quotes prevent variable parsing, so $var is printed literally.

5fill in blank

hard

Fill all three blanks to create a string with double quotes and escape the inner double quote.

PHP

$quote = [1]He said, [2]Hello![3] to me.[1];

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

A"

B\"

C'

D\'

Attempts:

3 left

💡 Hint

Common Mistakes

Not escaping inner double quotes causing syntax errors.

Using single quotes outside which don't allow escaping double quotes inside.

Double quotes start and end the string; inner double quotes are escaped with \".