Description
bool com_load_typelib ( string $typelib_name [, bool $case_insensitive ] )
Note that it is much more efficient to use the Runtime Configuration configuration setting to pre-load and register the constants, although not so flexible.
If you have turned on Runtime Configuration, then PHP will attempt to automatically register the constants associated with a COM object when you instantiate it. This depends on the interfaces provided by the COM object itself, and may not always be possible.