从数组中获取单个值 - Get single value from an array

Get single value from an array

本文关键字：单个值获取数组 | 更新日期: 2023-09-27

我有下面的数组结果

Array ( [0] => Item Object ( [name:protected] => My Super Cool Toy [price:protected] =>      10.99 ) )

我需要从这个数组中得到[name:protected] => My Super Cool Toy

请告诉我怎么去取，

我将我的类粘贴到

下面

class ShoppingCart
{
private $items = array();
private $n_items = 0;
function addItem( Item $item )
{
$this->items[] = $item;
$this->n_items = $this->n_items + 1;
print_r($this->items);
}
}

和

class Item {
protected $name;
protected $price;
 public function __construct($name, $price) {
    $this->name = $name;
    $this->price = $price;
}
public function getName() {
    echo "item is $this->name";
    return $this->name;
}
public function getPrice() {
    return $this->price;
}
}

和

require_once('AddingMachine.php');
require_once('item.php');
//$arrayofnumbers = array(100,200);
$objectname = new ShoppingCart();
$objectname->addItem(new Item('My Super Cool Toy', 10.99));
 $obname = new Item($items,44);
$obname->getName();

谢谢

如果我没记错的话，你在ShoppingCart类中得到了这个数组，在方法addItem中，所以要访问它你只需使用相应的getter方法，例如:

$this->items[0]->getName();

您可以尝试:

$objectname = new ShoppingCart();
$objectname->addItem(new Item('My Super Cool Toy', 10.99));
foreach ( $objectname->getItems() as $item ) {
    echo $item->getName(), PHP_EOL;
}

修改类

class ShoppingCart {
    private $items = array();
    private $n_items = 0;
    function addItem(Item $item) {
        $this->items[] = $item;
        $this->n_items = $this->n_items + 1;
    }
    function getItems($n = null) {
        return $n === null ? $this->items : (isset($this->items[$n]) ?  : $this->items[$n]);
    }
}