How to replace particular element's content in xml file using php?

[Kaushal Elsner]

<main_xml>
 <tag1>
  <![CDATA[
    <div id=1>
      Hello
    </div>

    <div id=2>
      Hi
    </div>
  ]]>
 </tag1>
</main_xml>

I want to change Hi to How are You? What should be done. I want code for this replacement. Thanks in advance.

[Dormilich]

there are two possible ways.
- get the CDATA text and use str_replace()
- get the CDATA text, render it anew as XML, replace the textContent via DOM, import the output of the 2nd XML into the 1st XML

important: a CDATA section is its own node type and everything contained is text.

[Kaushal Elsner]

Thanks very much for your reply but if you provide coding for that, then it would be much easier to me.

[Dormilich]

practically the same as in your other threads about this XML.

[Kaushal Elsner]

ok. Now can you tell me how to use getElementsById to identify a perticular tag & to echo that div's content. A small example please... Based on my xml file(I want to echo Hi based on id=2). In this how we can use getElementsById function?

[Dormilich]

if I remember right you have to either parse that XML chunk as HTML or parse it with a DTD that defines id as ID type attribute.

[Markus Igeland]

You should read up on the PHP-class called SimpleXML. It's not really simple, but easier to understand and work with than creating your own way to parse your XML-files. http://php.net/manual/en/book.simplexml.php