Php 如何打印所选阵列？

我使用

print\r（$jcart）

来获得上面的结果。

---

我只想打印出

[qtys]

数组。我尝试了

print\r（$qtys）但它不工作。
必须引用数组元素。因此，您始终需要指向
$jcart
，然后从那里引用。正如谢尔盖所指出的，你有一个目标

Jcart对象

因此，必须引用对象的元素，而不是数组

Jcart Object(
    [config] => Array
        (
            [jcartPath] => jcart/
            [checkoutPath] => checkout.php
            [item] => Array
                (
                    [id] => my-item-id
                    [name] => my-item-name
                    [price] => my-item-price
                    [qty] => my-item-qty
                    [url] => my-item-url
                    [add] => my-add-button
                )

            [paypal] => Array
                (
                    [id] => seller_1282188508_biz@conceptlogic.com
                    [https] => 1
                    [sandbox] => 
                    [returnUrl] => 
                    [notifyUrl] => 
                )

            [currencyCode] => USD
            [csrfToken] => 
            [text] => Array
                (
                    [cartTitle] => Shopping Cart
                    [singleItem] => Item
                    [multipleItems] => Items
                    [subtotal] => Subtotal
                    [update] => update
                    [checkout] => checkout
                    [checkoutPaypal] => Checkout with PayPal
                    [removeLink] => remove
                    [emptyButton] => empty
                    [emptyMessage] => Your cart is empty!
                    [itemAdded] => Item added!
                    [priceError] => Invalid price format!
                    [quantityError] => Item quantities must be whole numbers!
                    [checkoutError] => Your order could not be processed!
                )

            [button] => Array
                (
                    [checkout] => 
                    [paypal] => 
                    [update] => 
                    [empty] => 
                )

            [tooltip] => 1
            [decimalQtys] => 
            [decimalPlaces] => 1
            [priceFormat] => Array
                (
                    [decimals] => 2
                    [dec_point] => .
                    [thousands_sep] => ,
                )

        )

    [items] => Array
        (
            [0] => 3
            [1] => poslaju
        )

    [names] => Array
        (
            [3] => Hockey Stick
            [poslaju] => Pos Laju
        )

    [prices] => Array
        (
            [3] => 33.25
            [poslaju] => 6.00
        )

    [qtys] => Array
        (
            [3] => 1
            [poslaju] => 3
        )

    [urls] => Array
        (
            [3] => http://bing.com
            [poslaju] => 
        )

    [subtotal] => 51.25
    [itemCount] => 4
)

使用参考键选择所需的特定元素

print_r($jcart->qtys);

echo'；打印（$jcart->qtys）；

标记只是为了以更好的格式查看数组而添加的
您必须将
true
添加到
print\u r
以这样的方式连接它似乎
$jcart
是
jcart
的实例，所以可能引用应该是
$jcart->qtys
？@SergeyChizhik，的确如此。我第一次读的时候就错过了。
echo '<pre>'; print_r($jcart->qtys);