PHPUNIT_RUNNING PHPUNIT_RUNNING You should set this to true when you run PHPUnit tests as it alters the base workflow of the framework
LOG_LEVEL LOG_LEVEL Defines the log level. Valid values are LOG_LEVEL_DEBUG, LOG_LEVEL_ERROR and LOG_LEVEL_NONE
LOG_INTENSE LOG_INTENSE If logging is set to intense, an entire debug backtrace will be appended to each row, otherwise it's just the last file and line number