[英]Get single value from an array
I have below array result 我有下面的数组结果
Array ( [0] => Item Object ( [name:protected] => My Super Cool Toy [price:protected] => 10.99 ) )
I need to get [name:protected] => My Super Cool Toy
from this array. 我需要从此阵列中获取[name:protected] => My Super Cool Toy
。
Please tell me how to get it, 请告诉我如何获得它,
I will paste my classes below 我将在下面粘贴我的课程
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);
}
}
and 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 $this->price;
}
}
and 和
require_once('AddingMachine.php');
require_once('item.php');
//$arrayofnumbers = array(100,200);
$objectname = new ShoppingCart();
$objectname->addItem(new Item('My Super Cool Toy', 10.99));
$obname = new Item($items,44);
$obname->getName();
Thanks 谢谢
如果我正确地理解它,那么您将在ShoppingCart类的addItem方法中获得此数组,因此,只需使用相应的getter方法即可访问它,例如:
$this->items[0]->getName();
You can try : 你可以试试 :
$objectname = new ShoppingCart();
$objectname->addItem(new Item('My Super Cool Toy', 10.99));
foreach ( $objectname->getItems() as $item ) {
echo $item->getName(), PHP_EOL;
}
Modified Class 改良班
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]);
}
}
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