eZ\Publish\Core\REST\Common\Input\Dispatcher::parseParameters PHP Method

    private function parseParameters($mediaTypePart)
    {
        $parameters = [];
        foreach (explode(';', $mediaTypePart) as $parameterString) {
            list($parameterName, $parameterValue) = explode('=', $parameterString);
            $parameters[trim($parameterName)] = trim($parameterValue);
        }
        return $parameters;
    }