{
if (in_array($arr, $this->arr)) {
return true;
}
$this->arr[] = $arr;
}
public function remove($arr)
{
$this->arr = array_diff($this->arr, array($arr));
}
}
$team = new team();
$team->add('c');
$team->add('b');
$team->add('a');
$team->remove('b');
//var_dump($team->arr);
//装饰者
abstract class Beverage
{
public $_name;
public abstract function cost();
}
//被装饰者
class Coffee extends Beverage
{
public function __construct()
{
$this->_name = 'Coffee';
}
public function cost()