ZF-6592: Autoloader suppresses warnings by default
"By default, Zend_Loader_Autoloader does no error suppression when using its internal autoloader, which utilizes Zend_Loader::loadClass(). Most of the time, this is exactly what you want. However, there may be cases where you want to suppress them. You can do this using suppressNotFoundWarnings()"
/** * @var bool Whether or not to suppress file not found warnings */ protected $_suppressNotFoundWarnings = true;