Class declaration syntax in PHP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the basic syntax to declare a class in PHP?

Use the <code>class</code> keyword followed by the class name and curly braces. Example:<br><pre>class MyClass {<br>  // properties and methods<br>}</pre>

beginner

What keyword is used to create a class in PHP?

The keyword <code>class</code> is used to declare a class in PHP.

beginner

Can a PHP class contain properties and methods? Give a simple example.

Yes, a PHP class can have properties (variables) and methods (functions). Example:<br><pre>class Car {<br>  public $color;<br>  function drive() {<br>    echo "Driving";<br>  }<br>}</pre>

beginner

Is it necessary to end a PHP class declaration with a semicolon?

No, PHP class declarations do not end with a semicolon after the closing brace.

beginner

How do you name a class in PHP? Are there any rules?

Class names should start with a letter or underscore, followed by letters, numbers, or underscores. They are case-insensitive but it's common to use PascalCase. Example: <code>class MyClassName {}</code>

Which keyword is used to declare a class in PHP?

A class

B function

C object

D declare

The class keyword is used to declare a class in PHP.

What symbol is used to enclose the body of a PHP class?

A Angle brackets <>

B Square brackets []

C Parentheses ()

D Curly braces {}

Curly braces {} are used to enclose the class body.

Which of the following is a valid PHP class name?

A _UserProfile

B 3DModel

C user-profile

D class

Class names can start with a letter or underscore, but not a number or hyphen. _UserProfile is valid.

Do you need a semicolon after the closing brace of a PHP class declaration?

A Yes, always

B Only if the class has properties

C No, never

D Only if the class is empty

No semicolon is needed after the closing brace of a class declaration.

Which of these can be inside a PHP class?

A Only methods

B Properties and methods

C Only properties

D Neither properties nor methods

A PHP class can contain both properties (variables) and methods (functions).

Explain how to declare a simple class in PHP including properties and methods.

Think about the structure: keyword, name, then body with variables and functions.

What are the rules for naming a class in PHP?

Consider what characters are allowed and common naming styles.