Update memcached.ini or change default value for memcached.sess_prefix

[Yuxael]

Please update either memcached.ini or php_memcached.c

memcached.ini says:

; memcached session key prefix
; valid values are strings less than 219 bytes long
; the default value is "memc.sess.key."
memcached.sess_prefix = "memc.sess.key."

while in php_memcached.c there is:

MEMC_SESSION_INI_ENTRY("prefix", "memc.sess.", OnUpdateSessionPrefixString, prefix)

Personally I'd prefer if you updated the latter to:

MEMC_SESSION_INI_ENTRY("prefix", "memc.sess.key.", OnUpdateSessionPrefixString, prefix)

for compatibility reasons.

While this is not critical it can cause some headache in an environment with multiple PHP versions.

[sodabrew]

The default INI file explicitly sets the value to memc.sess.key but without a config file it's set to memc.sess., ouch. Someone without a config file will notice a change in hardcoded defaults 🎱 if I adjust the code to match the documentation.

[sodabrew]

Ping @remicollet this issue will be more apparent since I merged #330, and will need to be addressed before I can release.

[rlanvin]

While this is not critical it can cause some headache in an environment with multiple PHP versions.

I just encountered this bug (when working with a mix of PHP5 & PHP7), so yeah I can confirm this - while not critical, it definitely caused some confusion.

[remicollet]

@sodabrew I agree, memc.sess.key. everywhere seems better