Whenever I try and display a PHP Code in a WordPress post, it always dissapears and never shows up... Is there a plugin or something which can fix this?
http://mark.scottishclimbs.com/articles/2004/07/02/running-php-in-wordpress-posts/ this plugin will do what you require.
I don't want it to RUN the PHP code, I want it to be displayed so other can see it, I am having troubles with SimpleCode as well, it never seems to work...
use the <code> </code> tags if they dont work simply remove <? ?> then the code will essentially be text...