For future reference Inline PHP is the best one I have tested (on version 2.9 – even though currently it is not “approved” for 2.9).
However when switching to visual all of the <exec> and </exec> tags disappear and all that is left is the code raw and fragile.
I tested the following code:
<exec>
$test=’My big test<br />’;
echo $test;
echo ‘This is a test’;
</exec>
And this is what it shows:
My big test
This is a test
I am really excited. This plugin has a lot of potential.