#static string http\Env::negotiateEncoding(array $supported[, array &$result])

Negotiate the client's preferred encoding.

NOTE:
The first element of $supported encodings serves as a default if no encoding matches.

Params:#

• array $supported#
  List of supported content encodings.
• Optional array &$result#
  Out parameter recording negotiation results.

Returns:#

• NULL, if negotiation fails.
• string, the negotiated encoding.