protected function _exportParamValue($value = null, $length = 0) {
		$truncateOpt = [
			'ellipsis' => '...',
			'exact' => false,
			'html' => false
		];

		$valueText = var_export($value, true);
		$valueType = Debugger::getType($value);
		switch ($valueType) {
			case 'string':
				if (ctype_digit($value)) {
					$valueText = (int)$value;
				}
				break;
			case 'resource':
			case 'unknown':
				$valueText = 'null';
				break;
		}
		if ($length > 0) {
			$valueText = CakeText::truncate($valueText, $length, $truncateOpt);
		}

		return $valueText;
	}