PHP dynamic typing behavior - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign a string to the variable.

PHP

<?php
$var = [1];
echo gettype($var);

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

Atrue

B"Hello"

C123

D3.14

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning a number without quotes expecting it to be a string.

Using single quotes incorrectly.

The variable is assigned a string value, so gettype() returns "string".

2fill in blank

medium

Complete the code to add an integer and a float, showing PHP dynamic typing.

PHP

<?php
$result = 5 + [1];
echo gettype($result);

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

A3.5

Btrue

C"4"

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Adding a string instead of a number.

Using a boolean value which converts differently.

Adding an integer and a float results in a float type in PHP.

3fill in blank

hard

Fix the error in the code to correctly concatenate a string and an integer.

PHP

<?php
$text = "Age: ";
$age = 30;
echo $text [1] $age;

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

A&&

B+

C,

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using plus + which performs arithmetic addition instead of concatenation.

Using comma which is invalid here.

In PHP, the dot operator . is used to concatenate strings.

4fill in blank

hard

Fill both blanks to create an array with keys as strings and values as integers.

PHP

<?php
$data = ["one" => [1], "two" => [2]];
print_r($data);

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

A1

B"1"

C2

D"2"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around numbers making them strings.

Mixing keys and values types incorrectly.

The keys are strings, and the values should be integers without quotes.

5fill in blank

hard

Fill all three blanks to create a variable, assign a boolean, and print its type.

PHP

<?php
$[1] = [2];
echo gettype($[3]);

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

Aflag

Btrue

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in assignment and echo.

Assigning string "true" instead of boolean true.

The variable named flag is assigned the boolean true, and gettype() prints "boolean".