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FORCE_GZIP (integer)

FORCE_DEFLATE (integer)

ZLIB_ENCODING_RAW (integer)

DEFLATE algorithm as per RFC 1951. Available as of PHP 7.0.0.

ZLIB_ENCODING_DEFLATE (integer)

ZLIB compression algorithm as per RFC 1950. Available as of PHP 7.0.0.

ZLIB_ENCODING_GZIP (integer)

GZIP algorithm as per RFC 1952. Available as of PHP 7.0.0.

ZLIB_FILTERED (integer)

Available as of PHP 7.0.0.

ZLIB_HUFFMAN_ONLY (integer)

Available as of PHP 7.0.0.

ZLIB_FIXED (integer)

Available as of PHP 7.0.0.

ZLIB_RLE (integer)

Available as of PHP 7.0.0.

ZLIB_DEFAULT_STRATEGY (integer)

Available as of PHP 7.0.0.

ZLIB_BLOCK (integer)

Available as of PHP 7.0.0.

ZLIB_NO_FLUSH (integer)

Available as of PHP 7.0.0.

ZLIB_PARTIAL_FLUSH (integer)

Available as of PHP 7.0.0.

ZLIB_SYNC_FLUSH (integer)

Available as of PHP 7.0.0.

ZLIB_FULL_FLUSH (integer)

Available as of PHP 7.0.0.

ZLIB_FINISH (integer)

Available as of PHP 7.0.0.