PHP PHP Object-Oriented Programming 3

Question 1

What is a PHP trait primarily used for?

Accepted Answer

Reusing method implementations across classes without inheritance

Answer

Traits allow code reuse across multiple independent classes, solving the single-inheritance limitation in PHP.

Question 2

Which PHP magic method defines how an object behaves when cast to a string?

Accepted Answer

__toString()

Answer

__toString() is called automatically when an object is used in a string context, such as with echo.

Question 3

Which PHP magic method is triggered when reading an inaccessible or undefined property?

Accepted Answer

__get()

Answer

__get() is invoked when attempting to read a property that is inaccessible or does not exist on the object.

Question 4

What keyword is used to indicate that a class fulfills an interface contract in PHP?

Accepted Answer

implements

Answer

The implements keyword signals that a class will provide concrete definitions for all methods declared in the specified interface.

Question 5

What is late static binding in PHP accessed through?

Accepted Answer

static::

Answer

static:: uses late static binding, resolving to the class that was actually called at runtime rather than the class where the method was defined.

PHP - PHP Programming Language Practice Test