(PECL memcache >= 0.2.0)
memcache_debug — Turn debug output on/off
memcache_debug() turns on debug output if parameter
on_off is equal to true and turns off if it's
false.
Note:
memcache_debug() is accessible only if PHP was built with --enable-debug option and always returns
truein this case. Otherwise, this function has no effect and always returnsfalse.