If statement execution flow in PHP - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this PHP if-else code?

Look at the PHP code below. What will it print?

PHP

<?php
$number = 10;
if ($number > 10) {
    echo "Greater than 10";
} elseif ($number == 10) {
    echo "Equal to 10";
} else {
    echo "Less than 10";
}
?>

A Equal to 10

B Greater than 10

C Less than 10

D No output

💡 Hint

Check the condition that matches the value 10 exactly.

The variable $number is 10. The first condition ($number > 10) is false. The second condition ($number == 10) is true, so it prints "Equal to 10".

❓ Predict Output

intermediate

What will this PHP code output?

Consider this PHP snippet. What is printed?

PHP

<?php
$value = 0;
if ($value) {
    echo "True";
} else {
    echo "False";
}
?>

A True

B 0

C False

D No output

💡 Hint

Remember how PHP treats 0 in conditions.

In PHP, 0 is considered false in a condition, so the else block runs and prints "False".

🔧 Debug

advanced

Why does this PHP if statement not print anything?

Look at this PHP code. It prints nothing. Why?

PHP

<?php
$score = 75;
if ($score > 80);
{
    echo "Passed";
}
?>

A The semicolon after the if condition ends the if statement early, so the echo always runs.

B The variable $score is not defined correctly.

C The condition is false, so echo is skipped.

D PHP does not allow if statements without braces.

💡 Hint

Check the semicolon after the if condition.

The semicolon after the if condition ends the if statement. The block after it runs always, so "Passed" is printed regardless of the condition.

❓ Predict Output

advanced

What is the output of nested if statements in PHP?

What does this PHP code print?

PHP

<?php
$age = 20;
if ($age > 18) {
    if ($age < 21) {
        echo "Young adult";
    } else {
        echo "Adult";
    }
} else {
    echo "Minor";
}
?>

A No output

B Adult

C Minor

D Young adult

💡 Hint

Check both conditions carefully.

$age is 20, which is greater than 18 and less than 21, so it prints "Young adult".

🧠 Conceptual

expert

How many times does this PHP if-elseif-else chain execute echo?

Consider this PHP code. How many times will it print something?

PHP

<?php
$val = 5;
if ($val > 3) {
    echo "A";
} elseif ($val > 4) {
    echo "B";
} else {
    echo "C";
}
?>

A 2

B 1

C 0

D 3

💡 Hint

Remember that only one block in if-elseif-else runs.

The first condition ($val > 3) is true, so it prints "A" and skips the rest. Only one echo runs.