__toString for string representation in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the __toString method that returns the name property.

PHP

<?php
class Person {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function [1]() {
        return $this->name;
    }
}

$person = new Person("Alice");
echo $person;
?>

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

AtoString

B__toStr

C__toString

D__string

Attempts:

3 left

💡 Hint

Common Mistakes

Using toString without underscores

Misspelling the method name

Using __string instead of __toString

The magic method __toString() is used in PHP to define how an object is converted to a string.

2fill in blank

medium

Complete the code to return a formatted string with the person's name and age in the __toString method.

PHP

<?php
class Person {
    private $name;
    private $age;

    public function __construct($name, $age) {
        $this->name = $name;
        $this->age = $age;
    }

    public function __toString() {
        return [1];
    }
}

$person = new Person("Bob", 30);
echo $person;
?>

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

A"Person: $name, $age"

B"Name: $this->name, Age: $this->age"

C"$this->name is $this->age years old"

D"Name: name, Age: age"

Attempts:

3 left

💡 Hint

Common Mistakes

Using variables without $this->

Using undefined variables

Not returning a string

Using double quotes with $this->name and $this->age inside returns the formatted string with the object's properties.

3fill in blank

hard

Fix the error in the __toString method to correctly return the full name.

PHP

<?php
class User {
    private $firstName;
    private $lastName;

    public function __construct($firstName, $lastName) {
        $this->firstName = $firstName;
        $this->lastName = $lastName;
    }

    public function __toString() {
        return $this->firstName[1]$this->lastName;
    }
}

$user = new User("John", "Doe");
echo $user;
?>

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

A.

B,

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using + for string concatenation

Using comma instead of dot

Using dash instead of dot

In PHP, the dot (.) operator is used to join strings together.

4fill in blank

hard

Fill both blanks to create a __toString method that returns the user's full name with a space between first and last names.

PHP

<?php
class Member {
    private $firstName;
    private $lastName;

    public function __construct($firstName, $lastName) {
        $this->firstName = $firstName;
        $this->lastName = $lastName;
    }

    public function __toString() {
        return $this->firstName[1][2]$this->lastName;
    }
}

$member = new Member("Jane", "Smith");
echo $member;
?>

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

A.

B+

C" "

D,

Attempts:

3 left

💡 Hint

Common Mistakes

Using + instead of . for concatenation

Not adding a space between names

Using comma instead of space string

Use the dot (.) operator to join strings and include a space " " between the first and last names.

5fill in blank

hard

Fill all three blanks to create a __toString method that returns a formatted string with the user's full name and email.

PHP

<?php
class Contact {
    private $firstName;
    private $lastName;
    private $email;

    public function __construct($firstName, $lastName, $email) {
        $this->firstName = $firstName;
        $this->lastName = $lastName;
        $this->email = $email;
    }

    public function __toString() {
        return [1] . [2] . [3];
    }
}

$contact = new Contact("Emily", "Jones", "[e-mail]");
echo $contact;
?>

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

A"Name: " . $this->firstName . " " . $this->lastName

B"Email: " . $this->email

C" - "

D"Name: "

Attempts:

3 left

💡 Hint

Common Mistakes

Not concatenating strings properly

Missing spaces or separators

Using + instead of . for concatenation

Concatenate the label "Name: ", the full name with space, and then " - " followed by the email label and email.