How to parse HTML correctly with DOMDocument?

Lets say I have this type of HTML website:

stuff
<div id="123">
*HTML开发者_运维问答 CODE I NEED*
</div>
stuff
<div id="234">
*HTML CODE I NEED*
</div>
more stuff

How can I extract HTML CODE I NEED from those div's, given that I know their IDs ?

Thank you!

You can get the nodes with DOMDocument::getElementById ^[docs] and the text content with the textContent ^[docs] property.

If you want the inner HTML of the nodes, you can call DOMDocument::saveHTML ^[docs].