SimpleXMLElement to modify root tag

Question

Good day,

I am having trouble modifying XML using SimpleXMLElement in PHP.

My XML structure is as below:

<chart caption='NULL' shownames='1' showvalues='0' decimals='2' numberPrefix='$' useRoundEdges='0' legendBorderAlpha='0' bgColor='FFFFFF' canvasBorderColor='A5A5A5' canvasBorderThickness='1' showToolTip='1'>
...
</chart>

How can I modify the attributes() on the root tag using SimpleXMLElement?

Thank you!

EDIT: Hmm... I found a way but I dont believe its very clean. I added a <root><chart ...>...</chart></root> tag wraping my XML data. And I finally added str_replace(array("<root>", "</root>"), "", $_RenderedXML->asXML()) to my code. Any idea that is.. "cleaner"?

Answer 1

It's works sort of like an associative array, once you access the chart object you want:

$sxe = new SimpleXMLElement($yourXML);
$sxe->chart[0]["caption"] = "A new value";

This will set the caption attribute of the first chart node to A new value.

Answer 2

TO change the "shownames" attribute to (String) "2"

<?

$dom = simplexml_load_string("<chart caption='NULL' shownames='1' showvalues='0' decimals='2' numberPrefix='$' useRoundEdges='0' legendBorderAlpha='0' bgColor='FFFFFF' canvasBorderColor='A5A5A5' canvasBorderThickness='1' showToolTip='1'></chart>");
$dom['shownames'] = '2';
var_dump($dom);