Echo vs print behavior in PHP - Practice Questions

Challenge - 5 Problems

❓ Predict Output

intermediate

Output difference between echo and print

What is the output of this PHP code snippet?

PHP

<?php
$result = print('Hello');
echo $result;
?>

A Error

B Hello1

C 1Hello

D Hello

💡 Hint

Remember that print returns a value after outputting the string.

The print statement outputs 'Hello' and returns 1, which is then echoed, resulting in 'Hello1'.

❓ Predict Output

intermediate

Echo with multiple parameters

What will this PHP code output?

PHP

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

A Hi there!

B Hi, there!

C Error

D Hi

💡 Hint

Echo can take multiple parameters separated by commas.

Echo outputs all parameters concatenated without spaces unless explicitly added. Here, a space is added as the second parameter.

❓ Predict Output

advanced

Return value of echo

What happens when you try to assign the result of echo to a variable?

PHP

<?php
$value = echo 'Test';
echo $value;
?>

A Syntax error

B Test1

C Test

D 0

💡 Hint

Echo is a language construct, not a function, and does not return a value.

Echo cannot be used in an expression or assigned to a variable, so this code causes a syntax error.

❓ Predict Output

advanced

Print with parentheses

What is the output of this PHP code?

PHP

<?php
print('Hello');
print ('World');
?>

A

Hello
World

B Hello World

C HelloWorld

D Error

💡 Hint

Print can be used with or without parentheses.

Print outputs the strings exactly as given. No spaces or newlines are added automatically.

❓ Predict Output

expert

Combining echo and print in expressions

What is the output of this PHP code?

PHP

<?php
$sum = print('A') + print('B');
echo $sum;
?>

A Error

B AB

C 2

D AB2

💡 Hint

Print outputs the string and returns 1, so adding two prints returns 2.

Print outputs 'A' and 'B' then returns 1 each. Adding them gives 2, which is echoed after the letters.