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POHow to remove empty nodes from XML in PHP
 

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  1. POHow to remove empty nodes from XML in PHP
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    <p>I am submitting a form (after some validation) and compiling some xml like so:</p> <pre><code>$sxe = new SimpleXMLElement($xmlstr); $MyFirstNode = $sxe-&gt;addChild('MyFirstNode', $_POST["MyTitle"]); $MySecondNode = $sxe-&gt;addChild('MySecondNode'); $MyTHIRDNode = $MySecondNode-&gt;addChild('MyTHIRDNode', $_POST["FormElementName"]); </code></pre> <p>After this, I am writing the xml to a document using the following code;</p> <pre><code>$myFile = "myfilename.xml"; $fh = fopen($myFile, 'w') or die("can't open file"); fwrite($fh, $sxe-&gt;asXML()); fclose($fh); </code></pre> <p>In one scenario I need to produce the XML including any empty nodes. So in the above example, if <code>FormElementName</code> was empty it would be fine (producing something like <code>&lt;MyTHIRDNode&gt;&lt;/MyTHIRDNode&gt;</code></p> <p>However, in another scenario I need to remove all these empty nodes, so I am left with the ones that contain some sort of data:</p> <pre><code>&lt;node&gt; &lt;one&gt;Hello&lt;/one&gt; &lt;two&gt;&lt;/two&gt; // &lt;- Empty &lt;three&gt;World!&lt;/three&gt; &lt;/node&gt; // Becomes... &lt;node&gt; &lt;one&gt;Hello&lt;/one&gt; &lt;three&gt;World!&lt;/three&gt; &lt;/node&gt; </code></pre> <p>I have an if statement ready to differentiate between the two scenarios:</p> <pre><code>if ($_POST["operation"] == "UPDATE") { //do something } </code></pre> <p>However, I am not sure how to iterate through my '$sxe' and remove these empty nodes.</p> <p>Any help is much appreciated :)</p>
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    1. COsee this: http://stackoverflow.com/questions/8603237/remove-empty-tags-from-a-xml-with-php
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    2. COAhh, I have tried that first answer. But could not get it to work or find any docs on how it does work
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    3. COworking sample: http://codepad.org/0u2B6P8g
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