What are some best practices for implementing interfaces in PHP classes?

When implementing interfaces in PHP classes, it is important to ensure that the class implements all the methods declared in the interface. This helps in enforcing a contract that the class must adhere to. Additionally, using interfaces allows for better code organization and promotes code reusability.

interface Logger {
    public function log($message);
}

class FileLogger implements Logger {
    public function log($message) {
        // Implementation of log method
    }
}