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POSimplify PHP DOM XML parsing - how?
 

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  1. POSimplify PHP DOM XML parsing - how?
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    <p>I've spent whole days with PHP's DOM functions but i can't understand how it works yet. :( I have a simple XML file that looks okay but i cannot use it how i think when i've created it's structure.</p> <p>Sample XML fragment:</p> <pre><code>-pages //root element -page id="1" //we can have any number of pages -product id="364826" //we can have any number of products -SOME_KIND_OF_VALUE -ANOTHER_VALUE ... </code></pre> <p>My original idea was to speed up my client's workflow so i throw out old CSVs and started using XMLs.</p> <p><strong>Problem 1:</strong> When i grouping products into page i'm using <a href="http://www.php.net/manual/en/domelement.setidattribute.php" rel="noreferrer">setIdAttribute</a> to prevent storing the same page in the tree more than once. This works fine until reading happens because these id's are tied to some kind of DTD's (based on <a href="http://www.php.net/manual/en/domdocument.getelementbyid.php" rel="noreferrer">getElementById</a>).</p> <p><em>Question 1:</em> How can i write a simple DTD which provides these necessary informations so i can use <code>getElementById</code> at the reading phase too?</p> <p><strong>Problem 2:</strong> Because i have pages i'd like to load as less information as i can. That was why i created the id attribute on pages. Now i cannot access my page id="2" directly because Problem 1 above (<code>getElementById</code> makes no sense currently). Somehow i can managed to retrieve the necessary informations about each product on a given page but my code looks scary:</p> <pre><code>$doc = DOMDocument::load('data.xml'); $xpath = new DOMXPath($doc); $query = '/pages/page[' . $page . ']'; //$page is fine: was set earlier $products = $xpath-&gt;query($query); $_prods = $doc-&gt;getElementsByTagName('product'); foreach($_prods as $product){ foreach($product-&gt;childNodes as $node){ echo $node-&gt;nodeName . ": " . $node-&gt;nodeValue . "&lt;br /&gt;"; } } </code></pre> <p><em>Queston 2:</em> I think the code above is the example about <em>how not</em> to parse an XML. But because of my limited knowledge of PHP's DOM functions i cannot write a cleaner one by myself. I tried some trivial solution but none of them worked for me.</p> <p>Please help me if you can.</p> <p>Thanks, fabrik</p>
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    1. USfabrik
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      1. USHarish Kurup
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    1. COI assume you just gave an outline of the structure of your XML document? Because it is not XML what you have posted (I just want to be sure ;) ).
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      1. USFelix Kling
    2. COOf course it's just an outline. XML validates well and looks fine unlike my code :o
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      1. USfabrik
    3. COwould simplexml functions be too simple for your needs?
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      1. USstillstanding
 

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