PHP版本是:PHP 5.3.15 with Suhosin-Patch (cli) (built: Aug 24 2012 17:45:44)
memcache版本:memcache-3.0.8,已经make install,产生的memcache.so在/usr/lib/php/extensions/no-debug-non-zts-20090626/里面

再php.ini中已经加入extension="/usr/lib/php/extensions/no-debug-non-zts-20090626/memcache.so"并重启Apache

phpinfo();里面没有memcache拓展,$mc = new Memcache;也提示
Fatal error: Class 'Memcache' not found in XXXX