PHP code example of subcosm / observatory

1. Go to this page and download the library: Download subcosm/observatory library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

subcosm / observatory example snippets


use Subcosm\Observable\{
    ObservableInterface,
    ObservableTrait,
    AbstractObservationContainer as Container
};

class Foo implements ObservableInterface {
    use ObservableTrait;
    
    public function firstAction()
    {
        $message = 'Hello from firstAction!';
    
        $container = new class($this, __METHOD__, $message) extends Container {
            
            protected $message;
            
            public function __construct($object, string $stage, string $message) 
            {
                $this->message = $message;
                
                parent::__construct($object, $stage);
            }
            
            public function getMessage()
            {
                $this->message;
            }
        };
        
        $this->notify($container);
    }
    
    public function secondAction()
    {
        $message = 'Another hello from secondAction!';
            
        $container = new class($this, __METHOD__, $message) extends Container {
            
            protected $message;
            
            public function __construct($object, string $stage, string $message) 
            {
                $this->message = $message;
                
                parent::__construct($object, $stage);
            }
            
            public function getMessage()
            {
                $this->message;
            }
        };
        
        $this->notify($container);
    }
}


use Subcosm\Observable\{
    ObserverInterface,
    ObservationContainerInterface as Container
};

class EchoMessageObserver implements ObserverInterface {
    
    public function update(Container $container)
    {
        echo $container->getMessage().PHP_EOL;
    }
    
}


$observable = new Foo;

$observer = new EchoMessageObserver;

$observable->attach($observer);

$observable->firstAction();
$observable->secondAction();