Predefined Constants

The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

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 )

ZLIB_VERSION (string )

zlib version number as a string .

ZLIB_VERNUM (int )

zlib version number as an int .

ZLIB_OK (int )

No errors or additional status information.

ZLIB_STREAM_END (int )

Stream ended successfully.

ZLIB_NEED_DICT (int )

Preset dictionary is needed.

ZLIB_ERRNO (int )

File operation error.

ZLIB_STREAM_ERROR (int )

Stream state is inconsistent or a parameter is invalid.

ZLIB_DATA_ERROR (int )

Input data is corrupted.

ZLIB_MEM_ERROR (int )

Insufficient memory.

ZLIB_BUF_ERROR (int )

No progress is possible due to insufficient buffer space or unexpected ending of an input stream.

ZLIB_VERSION_ERROR (int )

zlib library version is incompatible with the version assumed by the caller.

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