public function setCommand($command)
{
$this->slot = $command;
}
public function bottonWasPressd()
{
$this->slot->execute();
}
}
println(SEPARATE, '命令模式', SEPARATE);
showImgs('6.png');
$control = new SimpleRemoteControl();
$light = new Light();
$command = new LightOnCommand($light);
$control->setCommand($command);
$control->bottonWasPressd();
/**
* 输出：
Light on
*/
class RemoteControl
{
public $onCommands = array();
public $offCommands = array();
public $lastCommand;
#最后一个命令
public function __construct()
{
for ($i = 0; $i < 7; $i++) {
$this->onCommands[$i] = new NoCommand();
$this->offCommands[$i] = new NoCommand();
