Basic OOP question

[Manga27]

Ok so I understand what a class is I think but I don't understand how to extract data from the variables created. Suppose I have this class that creates an object:

stdClass Object
(
    [documentID] => 
    [estimatedTotalResultsCount] => 270
    [searchTime] => 0.029824
    [resultElements] => Array
        (
            [0] => stdClass Object
                (
                    [productID] => 12
                    [productName] => Widget (Blue)
                    [productPrice]=> 12.95
                )
            [1] => stdClass Object
                (
                    [productID] => 3
                    [productName] => Widget (Orange)
                    [productPrice]=> 39.72
                )
        )
    [searchQuery] => whatever
)

Ok so I have these objects created, and I know that if I do this code:

echo $result->searchQuery . "<br>";

will print "whatever". But how do you go to the deeper variables, past the products? Like to say:

echo $result->resultElements[0]->productName . "<br>"

prints nothing, and

echo $result->resultElements[0] . "<br>"

prints "Object".

Sorry, I know this is a basic question. Thanks in advance.

... Christopher

[matto]

you have a bit of an array misunderstanding; try:

echo $result->resultElements[0]['productName'] . "<br>"

[Manga27]

That doesn't work, I've tried numerous variations of that too. 🙁

Any other ideas?

Take care,

... Chris

[bubblenut]

Right, stdClass is an object, then resultElements is an array and then finally each element of that array is and object so try this
$result->resultElements[0]->productID

Hope this Works.
Rob

[ahundiak]

The thing is, you don't want to actually use stdClass in your code. Instead, you define your own classes to represent things in your problem space. I really think you have the concepts of arrays and classes all mixed up.

class CProduct
{
  var $id;
  var $name;
  var $price;

  function CProduct($id,$name,$price)
  {
    $this->id = $id;
    $this->name = $name;
    $this->price = $price;
  }
}
$product =& new CProduct(12,"Widget",12.95);
echo $product->productID;

[Manga27]

Actually the class objects and arrays within were spit out by a commercial software program, and I am trying to parse the results in my own PHP code. Their class takes a search query and gives me back products from the database in the form of objects as described above.

However, I am fairly PHP competent, and am willing to put in the time to really learn classes. What is the advantage to using your method, ahundiak?

BubbleNut: This solution worked perfectly! Thank you very much.