public static function setParameter($namespace, $key, $value)
{
if (!is_string($namespace) && !is_null($namespace)) {
throw new InvalidArgumentException('`$namespace` must be a string');
}
if (!is_string($key)) {
throw new InvalidArgumentException('`$key` must be a string');
}
if (is_null($namespace)) {
if (is_null(self::$configuration)) {
self::$configuration = array();
}
self::$configuration[$key] = $value;
} else {
if (is_null(self::$configuration)) {
self::$configuration = array();
self::$configuration[$namespace] = array();
} else {
if (!array_key_exists($namespace, self::$configuration)) {
self::$configuration[$namespace] = array();
}
}
self::$configuration[$namespace][$key] = $value;
}
}
