If statement 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 check if a number is zero or not.

PHP

<?php
$number = 0;
if ($number [1] 0) {
    echo "Number is zero";
} else {
    echo "Number is not zero";
}
?>

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

A==

B!=

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' will check if the number is not zero.

Using '>' or '<' checks for greater or less than zero, not equality.

The condition $number == 0 checks if the number equals zero.

3fill in blank

hard

Fix the error in the if statement condition to check if a number is negative.

PHP

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

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

A<

B!=

C==

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' checks for positive numbers, not negative.

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

The condition $number < 0 correctly checks if the number is negative.

4fill in blank

hard

Fill both blanks to create a condition that checks if a number is between 1 and 10 (inclusive).

PHP

<?php
$number = 7;
if ($number [1] 1 && $number [2] 10) {
    echo "Number is between 1 and 10";
}
?>

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

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' or '<' alone excludes boundary numbers.

Mixing up '<' and '<=' changes the range.

The condition $number >= 1 && $number <= 10 checks if the number is between 1 and 10, including both ends.

5fill in blank

hard

Fill all three blanks to create an if-else statement that prints if a number is positive, zero, or negative.

PHP

<?php
$number = [1];
if ($number [2] 0) {
    echo "Positive number";
} elseif ($number [3] 0) {
    echo "Zero";
} else {
    echo "Negative number";
}
?>

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

A5

B>

C==

D<

Attempts:

3 left

💡 Hint

Common Mistakes

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

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

The variable $number is set to 5. The first condition $number > 0 checks for positive numbers. The second condition $number == 0 checks for zero.