Object instantiation with new in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new instance of the class.

PHP

<?php
class Car {}
$myCar = [1] Car();
?>

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

Anew

Bcreate

Cmake

Dbuild

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'create' or 'make' instead of 'new' to instantiate an object.

In PHP, you create a new object by using the new keyword followed by the class name and parentheses.

2fill in blank

medium

Complete the code to instantiate the class and assign it to a variable.

PHP

<?php
class Dog {}
$dog = [1] Dog();
echo get_class($dog);
?>

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

Amake

Bcreate

Cnew

Dbuild

Attempts:

3 left

💡 Hint

Common Mistakes

Using other verbs like 'make' or 'create' which are not valid in PHP for object instantiation.

The new keyword is used to create an instance of the Dog class.

3fill in blank

hard

Fix the error in the code to correctly instantiate the class.

PHP

<?php
class Book {}
$book = [1] Book();
?>

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

A()

B->

C[]

Dnew

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to call the class name as a function without 'new'.

You must use the new keyword before the class name to create an object.

4fill in blank

hard

Complete the code to instantiate the class and call its method.

PHP

<?php
class Person {
    function greet() {
        return "Hello!";
    }
}
$person = [1] Person();
echo $person->greet();
?>

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

Anew

B->

C::

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using '::' instead of '->' to call an instance method.

Use new to create the object and -> to call its method.

5fill in blank

hard

Fill both blanks to instantiate the class with a constructor and access its property.

PHP

<?php
class Animal {
    public $name;
    function __construct($name) {
        $this->name = $name;
    }
}
$animal = [1] Animal([2]);
echo $animal->name;
?>

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

Anew

B"Lion"

C->

D'Tiger'

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to use quotes around the string argument.

Using '.' instead of '->' to access the property.

Use new to create the object, pass the name as a string, and use -> to access the property.