cs Command

Command/HelloCommand.php

@@ -6,25 +6,31 @@ namespace DesignPatterns\Command;
  * This concrete command calls "print" on the Receiver, but an external
  * invoker just know he can call "execute" 
  */
-class HelloCommand implements Command
+class HelloCommand implements CommandInterface
 {
-
+    /**
+     * @var Receiver
+     */
     protected $output;
 
     /**
      * Each concrete command is builded with different receivers.
-     * Can be one, many, none or even other Command in parameters 
+     * Can be one, many, none or even other Command in parameters
+     *
+     * @param Receiver $console
      */
     public function __construct(Receiver $console)
     {
         $this->output = $console;
     }
 
+    /**
+     * execute and output "Hello World"
+     */
     public function execute()
     {
         // sometimes, there is no receiver and this is the command which 
         // does all the work
         $this->output->write('Hello World');
     }
-
-}
+}