How to edit data in XML file with php ?

Hi guys,

I'm trying to edit the values stored in a .XML file with php, look:

this is the XML file:

<?xml version="1.0" encoding="iso-8859-1"?>
<dmx_signatures>
<option1>1</option1>
<option2>0</option2>
</dmx_signatures>

PHP:

I will add many options there and I want to be able to edit this using PHP because I will use a form. I already know how to load the XML file and how to print data, but I really would like someone to explain to me how to edit a value and then save the xml file.

this is how I open & print the xml info:

<?php
if (file_exists('dmx_signatures.xml')) {
    $xml = simplexml_load_file('dmx_signatures.xml');
	
	echo $xml->option2;
} else {
    exit('ERROR: could not open xml file.');
}
?>

PHP:

any help would be greatly appreciated !

 

you need to use Document Object Model ,this object has methods that enable you to add,edit,del ... the elements of the xml file and save it .

 

Simple XML has support for editing in PHP5, albeit with less functionality than DOM. See here for info:

http://uk.php.net/manual/en/book.simplexml.php

 

Look at the following link:

http://uk.php.net/manual/en/simplexmlelement.asxml.php

jcr at di dot uminho dot pt 25-Jan-2011 10:32
Code snippet to load a XML document, increment an attribute and store it again.
My XML looks like:
<?xml version="1.0" encoding="ISO-8859-1"?>
<doctypes counter="16">
    <doctype id="d1">
        <name>Carta</name>
        <acro>CA</acro>
    </doctype>
...
</doctypes>

I want to retrieve the counter attribute, increment it, and store the new document at the end:

<?php
  $document = simplexml_load_file("mydoc.xml");
  $cont = (integer) $document['counter'];
  $document['counter'] = $cont+1;
  $document->asXML("mydoc.xml");
?>

Code (markup):

That makes it easy to save the xml object back to a file after your doing editing anything with it.