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.
YAC_VERSION
(string)
YAC_MAX_KEY_LEN
(int)
YAC_MAX_VALUE_RAW_LEN
(int)
YAC_MAX_RAW_COMPRESSED_LEN
(int)
YAC_SERIALIZER_PHP
(int)
YAC_SERIALIZER_JSON
(int)
YAC_SERIALIZER_IGBINARY
(int)
YAC_SERIALIZER_MSGPACK
(int)
YAC_SERIALIZER
(string)