hello I have a very awkward problem, I've made a code system for normal code and one for php so that the output is highlighted however I have a problem with code that is C++.

Due to the nature of the code e.g.

Code:
#include <header>
the php script will take not display <header> instead its hidden in the actual source of the html. Example:

Code:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#include <iostream><br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;#include <string><br />
The output is #include without the <headers>, any suggestions.