How to view code in content

Download the module Codefilter and activate it.

Go to admin/settings/filters, and to the settings of desired filter. Check Code filter.

Create your content and select the filter you just configured.

<code>Plain text/code</code>

<code>

<?php

//php colored code

function x(){

return "y";

}

?>

</code>

Maybe you have to add some style to your theme for div.codeblock