php how to access object array

Question

How to access the item array from the following object array

Cart66Cart Object
(
[_items:Cart66Cart:private] => Array
    (
        [2] => Cart66CartItem Object
            (
                [_productId:Cart66CartItem:private] => 327
                [_quantity:Cart66CartItem:private] => 3
                [_optionInfo:Cart66CartItem:private] => 
                [_priceDifference:Cart66CartItem:private] => 0
                [_customFieldInfo:Cart66CartItem:private] => 
                [_productUrl:Cart66CartItem:private] => http://localhost/odesk/cart66/fran-wilson-aloe-lip-care/
                [_formEntryIds:Cart66CartItem:private] => Array
                    (
                    )

            )

        [3] => Cart66CartItem Object
            (
                [_productId:Cart66CartItem:private] => 368
                [_quantity:Cart66CartItem:private] => 2
                [_optionInfo:Cart66CartItem:private] => 
                [_priceDifference:Cart66CartItem:private] => 0
                [_customFieldInfo:Cart66CartItem:private] => 
                [_productUrl:Cart66CartItem:private] => http://localhost/odesk/cart66/beauty-strokes-basic-shadow-brush/
                [_formEntryIds:Cart66CartItem:private] => Array
                    (
                    )

            )

    )

[_promotion:Cart66Cart:private] => 
[_promoStatus:Cart66Cart:private] => 0
[_shippingMethodId:Cart66Cart:private] => 13
[_liveRates:Cart66Cart:private] => Cart66LiveRates Object
    (
        [toZip] => 
        [weight] => 
        [rates] => Array
            (
            )

        [_toCountryCode:protected] => 
    )

)

Is it possible for you to add a public getItems() function into the Cart class? — gunnx, May 10 '12 at 14:38
Are you asking, *"How do I access a private/protected object property?"* -or- *"How do I make an object act like an array?"* — , May 10 '12 at 14:54

score 4 · Answer 1 · 2012-05-10T14:42:38.700

If you must access a private/protected class property you can simply use the magic __get method. Reflection would be way overboard in this case. Whether or not it makes good design sense to use the magic methods in this case depends on your situation, though.

class MyClass
{
    private $_items;

    public function __get($prop)
    {
        if ($prop == '_items') {
            return $this->_items;
        }
        throw new OutOfBoundsException;
    }
}

UPDATE

After re-reading it seems you simply want your object to behave like an array. To do this you'll need to implement ArrayAccess and point the relevant methods to the private $_items property.

class MyClass implements ArrayAccess
{
    private $_items = array();

    public function __construct() {
        $this->_items = array(
            "one"   => 1,
            "two"   => 2,
            "three" => 3,
        );
    }
    public function offsetSet($offset, $value) {
        if (is_null($offset)) {
            $this->_items[] = $value;
        } else {
            $this->_items[$offset] = $value;
        }
    }
    public function offsetExists($offset) {
        return isset($this->_items[$offset]);
    }
    public function offsetUnset($offset) {
        unset($this->_items[$offset]);
    }
    public function offsetGet($offset) {
        return isset($this->_items[$offset]) ? $this->_items[$offset] : null;
    }
}

And finally, PHP comes with a built-in ArrayObject class that will make an object behave very much like an array. You could always use that and point the relevent methods at a private $_items property.

i agree with the overboard statement, but given the fact that we don't know the class interface we should consider it. Thats why reflection is for, i guess. IMHO — Vlad Balmos, May 10 '12 at 14:38

Vlad Balmos · Accepted Answer · 2012-05-10T14:36:22.963

1

Something like this maybe:

$object->_items[index]->_productId

But if _items is private you will need a public getter or mess with the Reflection classes. You can set the the private property to be accessible through ReflectionProperty Try this:

    $reflectionObject = new ReflectionObject($yourObject);
    $property = $reflectionObject->getProperty('_items');
    $property->setAccessible(true);
    $items = $property->getValue($yourObject);

edited May 10 '12 at 14:36

answered May 10 '12 at 14:27

Vlad Balmos

3,372
19
34

$object->_items should return the items array. but it is not. how I can get item array. Is need to convert it to public – nbhatti2001 May 10 '12 at 14:33
one thing this code was running well on local machine but giving problem on live server. any clue? – nbhatti2001 May 12 '12 at 18:33
1

what kind of problems? make sure both machines are running the same php version – Vlad Balmos May 13 '12 at 07:57

score 0 · Answer 3 · edited Jul 18 '12 at 01:45

0

Try the following:

$object->$first_node->$second_node->$third_node;

edited Jul 18 '12 at 01:45

Robert

8,717
2
27
34

answered May 10 '12 at 14:26

Adam

1,684
14
18

It's private, so probably not an option. – kitti May 10 '12 at 14:27

php how to access object array

3 Answers3

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