getMessage(); } else { echo 'Success!'; } ?>In this example, we call the function some_function which may return a PEAR error object if an error occurred. We then use PEAR::isError to check if the result is an error object, and if so, we retrieve the error message using the getMessage method and display it to the user. Based on the usage of PEAR::raiseError in Example 1, it is likely that the package library being used here is PEAR_Error.