Repository pattern in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare the Repository interface.

PHP

<?php
interface [1] {
    public function findAll();
}

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AController

BDatabase

CService

DRepository

Attempts:

3 left

💡 Hint

Common Mistakes

Using unrelated names like Service or Controller for the interface.

The interface is named Repository to define the contract for data access.

2fill in blank

medium

Complete the method signature to find an item by its ID.

PHP

<?php
interface Repository {
    public function findById([1] $id);
}

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Astring

Bint

Cbool

Darray

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect types like bool or array for the ID parameter.

The findById method usually takes an int as the ID parameter.

3fill in blank

hard

Fix the error in the repository implementation class declaration.

PHP

<?php
class UserRepository [1] Repository {
    public function findAll() {
        // code to get all users
    }
}

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Auses

Bextends

Cimplements

Dinherits

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'extends' keyword for interfaces causes errors.

In PHP, classes implement interfaces using the implements keyword.

4fill in blank

hard

Fill both blanks to complete the method that saves a user entity.

PHP

<?php
class UserRepository implements Repository {
    public function save([1] $user) : [2] {
        // code to save user
    }
}

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AUser

Bbool

Cvoid

Darray

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter types or return types like void or array.

The save method takes a User object and returns a bool indicating success.

5fill in blank

hard

Fill all three blanks to complete the repository method that deletes a user by ID.

PHP

<?php
class UserRepository implements Repository {
    public function delete([1] $id) : [2] {
        // code to delete user
        return [3];
    }
}

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Aint

Bbool

Ctrue

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong types or returning false by default.

The delete method takes an int ID, returns a bool, and returns true on success.