Re. Installing the memcache extension:
I had all kinds of troubles getting it hooked up, because in all of the instructions I read I never got the last, most important step - you must have a php.ini and have in it "extension=memcache.so."
So, the steps:
First - ./configure with --enable-memcache. This should show in your phpinfo() at the top (even though nothing of the memcache extension works yet).
Second:
either pecl install memcache
OR
download the source
tar -xzvf [thesourcetarball]
phpize
./configure
make
make install
Finally: Add extension=memcache.so to your php.ini. (If you don't have one, it should go in the root of where php is called ie., /usr/local/lib)
Call phpinfo() and you should see a memcache section.
