&reftitle.constants; &extension.constants;

`FORCE_GZIP` (`int`)

`FORCE_DEFLATE` (`int`)

`ZLIB_ENCODING_RAW` (`int`)

- DEFLATE algorithm as per RFC 1951.

`ZLIB_ENCODING_DEFLATE` (`int`)

- ZLIB compression algorithm as per RFC 1950.

`ZLIB_ENCODING_GZIP` (`int`)

- GZIP algorithm as per RFC 1952.

`ZLIB_FILTERED` (`int`)

`ZLIB_HUFFMAN_ONLY` (`int`)

`ZLIB_FIXED` (`int`)

`ZLIB_RLE` (`int`)

`ZLIB_DEFAULT_STRATEGY` (`int`)

`ZLIB_BLOCK` (`int`)

`ZLIB_NO_FLUSH` (`int`)

`ZLIB_PARTIAL_FLUSH` (`int`)

`ZLIB_SYNC_FLUSH` (`int`)

`ZLIB_FULL_FLUSH` (`int`)

`ZLIB_FINISH` (`int`)