A tried at 3v4l.org and the first version to have the ZLIB_ENCODING_* constants was 5.4.0.
Ces constantes sont définies par cette extension, et ne sont disponibles que si cette extension a été compilée avec PHP, ou bien chargée au moment de l'exécution.
FORCE_GZIP
(int)
FORCE_DEFLATE
(int)
ZLIB_ENCODING_RAW
(int)
ZLIB_ENCODING_DEFLATE
(int)
ZLIB_ENCODING_GZIP
(int)
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)
A tried at 3v4l.org and the first version to have the ZLIB_ENCODING_* constants was 5.4.0.
I'm noticing that all the ZLIB_ENCODING_* constants are documented to exist as of PHP 7.0, but I seem to be able to use them in PHP 5.5.9.
Could someone please confirm this documentation?