In a new entry Knut Urdalen looks at something that some PHP developers might have forgotten about - the return value of the include statement.
PHP never stops surprising me. I just found out that you're able to return values from the inclusion statements (require, require_once, include and include_once) through an example of Zend_Config.
His example puts an array of values inside the include file with a return statement. This script is included from another and, because of the return, the array data is passed back out into a waiting variable set equal to the include statement.