Question

What i need to do is to replace all pre tags with code tags.

Example

<pre lang="php">
    echo "test";
</pre>
Becomes
<code>
    echo "test";
</code>
<pre lang="html4strict">
    <div id="test">Hello</div>
</pre>
Becomes
<code>
    <div id="test">Hello</div>
</code>

And so on..

Default DOM functions of php have a lot of problems because of the greek text inside.
I think Simple HTML DOM Parser is what i need but i cant figure out how to do what i want.
Any ideas?

UPDATE
Im moving to a new CMS thats why im writing a script to format all posts to the correct format before inserting into DB. I cant use pre tags in the new CMS.

Answer 1

Why not KISS (Keep It Simple, Stupid):

echo str_replace(
    array('<pre>', '</pre>'),
    array('<code>', '</code>'),
    $your_html_with_pre_tags
);