array get_declared_classes (void)
This function returns an array of the names of the declared classes in the current script.
Note: In PHP 4.0.1pl2, three extra classes are returned at the beginning of the array: stdClass (defined in Zend/zend.c), OverloadedTestClass (defined in ext/standard/basic_functions.c) and Directory (defined in ext/standard/dir.c).