If-else execution flow in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a number is positive.

PHP

<?php
$number = 5;
if ($number [1] 0) {
    echo "Positive number";
}
?>

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

A==

B<

C>

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' will check for negative numbers.

Using '==' checks for equality, not positivity.

The condition $number > 0 checks if the number is positive.

2fill in blank

medium

Complete the code to print "Even" if the number is even.

PHP

<?php
$number = 4;
if ($number % 2 [1] 0) {
    echo "Even";
}
?>

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

A==

B!=

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' will check for odd numbers instead.

Using '>' or '<' does not correctly check for evenness.

The condition $number % 2 == 0 checks if the number is even.

3fill in blank

hard

Fix the error in the if-else statement to print "Positive" or "Non-positive".

PHP

<?php
$number = -3;
if ($number [1] 0) {
    echo "Positive";
} else {
    echo "Non-positive";
}
?>

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

A==

B>

C<

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' will print "Positive" for negative numbers.

Using '==' only checks for zero, not positivity.

The condition $number > 0 correctly checks for positive numbers.

4fill in blank

hard

Fill both blanks to check if a number is negative or zero.

PHP

<?php
$number = 0;
if ($number [1] 0) {
    echo "Negative number";
} elseif ($number [2] 0) {
    echo "Zero";
} else {
    echo "Positive number";
}
?>

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

A<

B>

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' for negative check.

Using '!=' instead of '==' for zero check.

The first condition $number < 0 checks for negative numbers, and the second $number == 0 checks for zero.

5fill in blank

hard

Fill both blanks to print "Small", "Medium", or "Large" based on the value.

PHP

<?php
$value = 15;
if ($value [1] 10) {
    echo "Small";
} elseif ($value [2] 20) {
    echo "Medium";
} else {
    echo "Large";
}
?>

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

A<=

B<

C>=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' instead of '<' for the first condition.

Using '>' instead of '<=' for the second condition.

The first condition $value < 10 prints "Small". The second $value <= 20 prints "Medium". Otherwise, it prints "Large".