Read an XML style file using PHP - php

Question

I am trying to retrieve data from this XML style file :
<Product_Group>
<Product_Group_ID>131</Product_Group_ID>
<Product_Group_Title>Thanks for the Memories</Product_Group_Title>
<Products>
<On_Sale_Date>03/01/12 00:00:00.000</On_Sale_Date>
<ISBN>9780007233694</ISBN>
<Title>Thanks for the Memories</Title>
<Format>Paperback</Format>
<Sub_Format/>
<CoverImageURL_Small>http://www.harpercollins.com/harperimages/isbn/small/4/9780007233694.jpg</CoverImageURL_Small>
</Products>
</Product_Group>
I am using following code but this seems to retrieve nothing. any help in fixing this issues would be highly appreciated
$xml = simplexml_load_string($response);
//$xml= $response;
$updates = array();
//loop through all the entry(s) in the feed
for ($i=0; $i<count($xml->Product_Group); $i++)
{
//get the id from entry
$ISBN = $xml->entry[$i]->ISBN;
//get the account link
$Title = $xml->entry[$i]->Title;
//get the tweet
$Product_Group_SEO_Copy = $xml->entry[$i]->Product_Group_SEO_Copy;
}

Answer 1

1) It is not valid XML. What warnings do you see? You'll need to fix them for simplexml_load_string to work properly.
For example, </CoverImageURL_Small> should be <CoverImageURL_Small/>
2) Assuming that Product_Group is not your actual document root (if it is than $xml points to it already and $xml->Product_Group will not work) then you can access each element like
$xml->Product_Group->Products[$i]->ISBN;
3) It's usually simpler to use a foreach loop than a for loop when dealing with simplexml
foreach($xml->Product_Group->Products as $p)
{
$ISBN = $p->ISBN;
//var_dump($ISBN);
}