gistfile1.aw

<?php

Interface WeatherInterface {
    public function getWeather();
}

class WeatherBot implements WeatherInterface {
    public function getWeather() {
        // imagine something more complicated
        return 'Sunny';
    }
}

class WordyDecorator implements WeatherInterface
{
	protected $weatherInterface;

	public function __construct (WeatherInterface $weather) {
		$this->weatherInterface = $weather;
	}

	public function getWeather () {
		$string = 'Today it is: ' . $this->weatherInterface->getWeather();
		return ($string);
	}
}

class BorderDecorator implements WeatherInterface
{
	protected $weatherInterface;

	public function __construct (WeatherInterface $weather) {
		$this->weatherInterface = $weather;
	}

	public function getWeather () {
		$string = '~{' . $this->weatherInterface->getWeather() . '}~';
		return ($string);
	}
}

class NewLineDecorator implements WeatherInterface {
	protected $weatherInterface;

	public function __construct (WeatherInterface $weather) {
		$this->weatherInterface = $weather;
	}

	public function getWeather () {
		$string = $this->weatherInterface->getWeather() . "\n";
		return ($string);
	}
}

$weather = new NewLineDecorator(new WordyDecorator(new WeatherBot));
echo $weather->getWeather();


$weather = new NewLineDecorator(new BorderDecorator(new NewLineDecorator(new WordyDecorator(new WeatherBot))));
echo $weather->getWeather();