Issue accessing objects within objects in a file with XML format - php

Question

I have a XML format file which has objects inside objects. This is how I get values of first object, which works fine for me:
$soapclient = new SoapClient('http://anywb/book.asmx?WSDL');
$params = array('ISBN' => "1111");
$response = $soapclient->GetBookByISBN($params);
//This will give me the value "Success"
$result = $response->GetBookByISBNResult->ResponseText;
Now my question is how to access the object which is inside object. For example, how to get "BookID" which is 4 and how to get value of "Type" which is 1?
Any suggestion would be appreciated. Here is the object:
stdClass Object
(
[GetBookByISBN] => stdClass Object
(
[ResponseText] => Success
[SearchResult] => stdClass Object
(
[Search] => Array
(
[0] => stdClass Object
(
[Date] => 2015-10-20
[BookID] => 4
[Discription] => stdClass Object
(
[Type] => 1
)
[Probability] => stdClass Object
(
[Kids] =>
[Adult] => 00
)
)
[1] => stdClass Object
(
[Date] => 2016-11-15
[BookID] => 5
[Discription] => stdClass Object
(
[Type] => 2
)
[Probability] => stdClass Object
(
[Kids] =>
[Adult] => 00
)
)
))))

Answer 1

You do it like this:
$response->GetBookByISBN->SearchResult->Search[0]->BookID;
$response->GetBookByISBN->SearchResult->Search[0]->Discription->Type;
If you would like to have an array containing all book ids you would have something like this:
$BookIDs = array();
foreach($response->GetBookByISBN->SearchResult->Search as $key => $value) {
$BookIDs[$key] = $value->BookID;
}
Or if you would like to be able to modify the values in $response using the $BookIDs (as an example) iot would look like this:
$BookIDs = array();
foreach($response->GetBookByISBN->SearchResult->Search as $key => $value) {
$BookIDs[$key] = &$value->BookID;
}