yii\base\ErrorHandler::handleFatalError PHP Method

    public function handleFatalError()
    {
        unset($this->_memoryReserve);
        // load ErrorException manually here because autoloading them will not work
        // when error occurs while autoloading a class
        if (!class_exists('yii\\base\\ErrorException', false)) {
            require_once __DIR__ . '/ErrorException.php';
        }
        $error = error_get_last();
        if (ErrorException::isFatalError($error)) {
            if (!empty($this->_hhvmException)) {
                $exception = $this->_hhvmException;
            } else {
                $exception = new ErrorException($error['message'], $error['type'], $error['type'], $error['file'], $error['line']);
            }
            $this->exception = $exception;
            $this->logException($exception);
            if ($this->discardExistingOutput) {
                $this->clearOutput();
            }
            $this->renderException($exception);
            // need to explicitly flush logs because exit() next will terminate the app immediately
            Yii::getLogger()->flush(true);
            if (defined('HHVM_VERSION')) {
                flush();
            }
            exit(1);
        }
    }