In PHP 5.5.14 this function returns NULL (not TRUE or FALSE). I have no information about other PHP releases.(PECL memcache >= 0.2.0)
memcache_debug — デバッグ出力のオン/オフを切り替える
In PHP 5.5.14 this function returns NULL (not TRUE or FALSE). I have no information about other PHP releases.This method is deprecated in at least PHP 5.2.6
memcache_debug() [<a href="/?originalUrl=https%3A%2F%2Fwww.php.net%2Ffunction.memcache-debug">function.memcache-debug</a>]: memcache_debug() is deprecated, please use a debugger (like Eclipse + CDT)