How do you define a class in PHP?

To define a class in PHP, you use the class keyword followed by the name of the class. This syntax is essential as it clearly indicates to the PHP interpreter that a new class definition is being created. The class declaration allows you to encapsulate properties and methods that define the behavior and characteristics of that class. For instance:

class MyClass {
   public $property;
   
   public function myMethod() {
       // Method code goes here
   }
}

In this example, "MyClass" is defined using the class keyword, demonstrating how to encapsulate behavior and state. This approach forms the backbone of object-oriented programming in PHP, allowing developers to create reusable and modular code components.

The other choices provided do not accurately reflect the syntax used in PHP for class definitions. The define keyword is used for constants, the create keyword does not exist in PHP, and the function keyword is used for defining functions, not classes. Thus, the correct option succinctly outlines the necessary framework for class creation in PHP.