Echo statement in PHP - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this PHP echo statement?

Consider the following PHP code snippet. What will it print?

PHP

<?php
echo "Hello " . "World!";
?>

A Hello World!

B Hello.World!

C HelloWorld!

D Hello + World!

💡 Hint

The dot (.) operator in PHP joins strings together.

The dot operator concatenates strings in PHP. So "Hello " . "World!" becomes "Hello World!".

❓ Predict Output

intermediate

What does this echo statement output?

Look at this PHP code. What will be printed?

PHP

<?php
echo 5 + 3;
?>

A 53

B 5 + 3

C Error

D 8

💡 Hint

PHP evaluates expressions inside echo before printing.

The expression 5 + 3 is calculated to 8, which is then printed.

❓ Predict Output

advanced

What is the output of this PHP echo with variables?

Given the code below, what will echo print?

PHP

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

A Hello, Alice!

B Error

C Hello, !

D Hello, $name!

💡 Hint

Double quotes allow variable interpolation in PHP.

Inside double quotes, PHP replaces $name with its value, so it prints Hello, Alice!

❓ Predict Output

advanced

What error does this PHP echo statement cause?

What error will this PHP code produce?

PHP

<?php
echo 'Hello, $name!';
?>

A Syntax error

B Prints Hello, Alice!

C Prints Hello, $name!

D Undefined variable error

💡 Hint

Single quotes do not replace variables in PHP strings.

Single quotes print the string as is, so $name is not replaced and prints literally.

🧠 Conceptual

expert

How many items are printed by this PHP echo statement?

What is the number of separate items printed by this echo statement?

PHP

<?php
echo "Hi", " there", "!";
?>

A 2

B 3

C 1

D Error

💡 Hint

Echo can take multiple comma-separated arguments.

Echo can print multiple strings separated by commas, so it prints 3 items.