PHP in Templates and Template Conditionals

[Yumi]

eval does run slower, primarily due to the fact that it can't precompile/cache the PHP code, but since all of this is eval'd anyway, it's not too much of a difference. eval does cause some overhead when you put an extra layer on it though. Also, ob_* functions are used, which isn't the most efficient either.

This plugin is mainly for convenience purposes. As stated, if someone does manage to gain access to the AdminCP (or modify the templates table), they've got the ability to execute arbitrary code. Plus it's recommended to stick PHP in the .php files rather than templates (for speed and security).