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. Available as of PHP 7.0.0.
ZLIB_ENCODING_DEFLATE (int)
ZLIB compression algorithm as per RFC 1950. Available as of PHP 7.0.0.
ZLIB_ENCODING_GZIP (int)
GZIP algorithm as per RFC 1952. Available as of PHP 7.0.0.
ZLIB_FILTERED (int)
Available as of PHP 7.0.0.
ZLIB_HUFFMAN_ONLY (int)
Available as of PHP 7.0.0.
ZLIB_FIXED (int)
Available as of PHP 7.0.0.
ZLIB_RLE (int)
Available as of PHP 7.0.0.
ZLIB_DEFAULT_STRATEGY (int)
Available as of PHP 7.0.0.
ZLIB_BLOCK (int)
Available as of PHP 7.0.0.
ZLIB_NO_FLUSH (int)
Available as of PHP 7.0.0.
ZLIB_PARTIAL_FLUSH (int)
Available as of PHP 7.0.0.
ZLIB_SYNC_FLUSH (int)
Available as of PHP 7.0.0.
ZLIB_FULL_FLUSH (int)
Available as of PHP 7.0.0.
ZLIB_FINISH (int)
Available as of PHP 7.0.0.