String split and explode in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to split the string into an array using a space.

PHP

<?php
$string = "apple banana cherry";
$array = explode([1], $string);
print_r($array);
?>

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

A" "

B","

C"-"

D";"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a comma instead of a space as delimiter.

Forgetting to put the delimiter inside quotes.

The explode function splits a string by the given delimiter. Here, the delimiter is a space " ".

2fill in blank

medium

Complete the code to split the string by commas.

PHP

<?php
$csv = "red,green,blue";
$colors = explode([1], $csv);
print_r($colors);
?>

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

A","

B" "

C";"

D"|"

Attempts:

3 left

💡 Hint

Common Mistakes

Using space as delimiter when the string uses commas.

Not putting the delimiter in quotes.

The string contains colors separated by commas, so the delimiter for explode should be a comma ",".

3fill in blank

hard

Fix the error in the code to split the string by dash.

PHP

<?php
$dates = "2023-06-15";
$parts = explode([1], $dates);
print_r($parts);
?>

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

A"_"

B"-"

C'-'

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using the dash without quotes causes a syntax error.

Using the wrong delimiter character.

The delimiter must be a string inside quotes. Using "-" or '-' is correct. Option C is missing quotes and causes an error.

4fill in blank

hard

Fill both blanks to create an array of words longer than 3 letters.

PHP

<?php
$sentence = "I love coding in PHP";
$words = explode([1], $sentence);
$longWords = array_filter($words, fn($word) => strlen($word) [2] 3);
print_r($longWords);
?>

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

A" "

B>

C<

D,

Attempts:

3 left

💡 Hint

Common Mistakes

Using comma as delimiter instead of space.

Using less than operator instead of greater than.

The string is split by space " ". The filter keeps words with length greater than 3 using >.

5fill in blank

hard

Fill all three blanks to create an associative array of words and their lengths for words longer than 2 letters.

PHP

<?php
$text = "apple banana cat dog";
$result = [];
foreach(explode(" ", $text) as [3]) {
    if(strlen([3]) > 2) {
        $result[[1]] = [2];
    }
}
print_r($result);
?>

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

A$word

Bstrlen($word)

D$text

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names.

Confusing keys and values in the array.

We loop over each $word from exploding the string by space. The key is the word $word, the value is its length strlen($word).