Unable to get WP_DEBUG, WP_DEBUG_DISPLAY, WP_DEBUG_LOG to work

I’ve obtained the right debugging constants outlined in wp-config.php:

outline('WP_DEBUG', true);
outline('WP_DEBUG_DISPLAY', true);
outline('WP_DEBUG_LOG', true);

However they are not doing a darn factor. Once I output one thing to the log file from my plugin (even with out testing for WP_DEBUG === true) like this nothing occurs on-screen and there isn’t any debug.log to be discovered both:

error_log('check!');

I am positive that a part of the code within the plug is being executed. What offers? I am utilizing WP 3.6.1. Thanks.