Array slice and splice in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get a slice of the array from index 1 to 3.

PHP

<?php
$fruits = ['apple', 'banana', 'cherry', 'date', 'fig'];
$slice = array_slice($fruits, [1], 3);
print_r($slice);
?>

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

A1

B0

C2

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 as the start index which includes the first element.

Using 3 which starts slicing too late.

The array_slice function extracts a portion of the array starting at the given index. To start from the second element (index 1), use 1.

2fill in blank

medium

Complete the code to remove 2 elements from the array starting at index 2 using array_splice.

PHP

<?php
$colors = ['red', 'green', 'blue', 'yellow', 'purple'];
array_splice($colors, [1], 2);
print_r($colors);
?>

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

A0

B1

C3

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 which removes elements starting too early.

Using 3 which removes elements starting too late.

The array_splice function removes elements starting at the given index. To remove from the third element, use index 2.

3fill in blank

hard

Fix the error in the code to correctly insert 'orange' at index 1 without removing elements.

PHP

<?php
$fruits = ['apple', 'banana', 'cherry'];
array_splice($fruits, [1], 0, 'orange');
print_r($fruits);
?>

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

A0

B2

C1

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 inserts before 'apple'.

Using 2 inserts after 'banana'.

To insert without removing, set the length parameter to 0 and specify the index where you want to insert. Index 1 inserts before 'banana'.

4fill in blank

hard

Fill both blanks to create a slice of the array from index 2 to the end.

PHP

<?php
$numbers = [10, 20, 30, 40, 50];
$slice = array_slice($numbers, [1], [2]);
print_r($slice);
?>

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

A2

B3

Cnull

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0 as start index returns the first three elements.

Using 0 as length returns an empty array.

Starting at index 2 with length 3 extracts [30, 40, 50] from the third item to the end.

5fill in blank

hard

Fill all three blanks to remove 1 element at index 1 and insert 'kiwi' and 'mango' instead.

PHP

<?php
$fruits = ['apple', 'banana', 'cherry', 'date'];
array_splice($fruits, [1], [2], [[3]]);
print_r($fruits);
?>

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

A1

B2

C'kiwi', 'mango'

Attempts:

3 left

💡 Hint

Common Mistakes

Removing 2 elements removes too many items.

Not passing the inserted fruits as an array.

Start at index 1, remove 1 element ('banana'), and insert 'kiwi' and 'mango' as an array.