How can I structure my PHP code to improve reusability and maintainability using OOP principles?

To improve reusability and maintainability in PHP code using OOP principles, you can create classes that encapsulate related functionality, use inheritance to promote code reuse, and implement interfaces to define contracts for classes to adhere to. Additionally, you can utilize traits to share methods across different classes without inheritance. 

// Example of structuring PHP code using OOP principles for reusability and maintainability

// Define an interface for classes that can be logged
interface Loggable {
    public function log($message);
}

// Create a base class with common functionality
class BaseClass {
    protected $name;

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

    public function getName() {
        return $this->name;
    }
}

// Create a subclass that extends the base class and implements the Loggable interface
class SubClass extends BaseClass implements Loggable {
    public function log($message) {
        echo $this->getName() . ': ' . $message . PHP_EOL;
    }
}

// Create an instance of the subclass and use the log method
$subClass = new SubClass('Example');
$subClass->log('Logging message');

Keywords

OOP PHP code structure reusability maintainability libraries

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