Command Pattern

command.php

<?php

// the command interface
interface Command
{
	public function execute();
}

//the invoker 
class Controller 
{
	public function execute(Command $command)
        {
     	    return $command->execute();
        }
}

//the receiver 
class Action
{
	public function insert()
	{
		return print(" \n insert ok");
	}

	public function find()
	{
		return print(" \n find ok");
	}
}

//concrete command 1
class InsertCommand implements Command
{
    private $action;
    
    public function __construct(Action $action)
    {
       $this->action = $action;       
    }

    public function execute()
    {
    	$this->action->insert();
    }
}

//concrete command 2 
class FindCommand implements Command
{
	private $action;

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

	public function execute()
	{
		$this->action->find();
	}
}

//client 
$action = new Action();
$insert = new InsertCommand($action);
$find = new FindCommand($action);

$controller = new Controller();

$controller->execute($insert);
$controller->execute($find);