For the better part of 2 hours I tried and failed to get the Memcache extension installed on MAMP. I tried following several guides, but everything fell flat on it’s face about 75% of the way through. I eventually figured it out, and I wanted to share it so that other people don’t have to go through the pain and suffering that I did. It turns out to be surprisingly easy, but YMMV.
Step 2: Make the MAMP PHP binary files executable
sudo chmod +xrw /Applications/MAMP/bin/php5.3/bin/p*
Step 3: Get the Memcache extension source
tar -zxvf memcache-2.2.5.tgz
Step 4: PHPize the Memcache extension files
Step 5: Compile the Memcache extension
Step 6: Add the extension to the PHP.ini file
Add the following to the end of your PHP 5.3 ini file via the MAMP file menu.
Step 7: Copy the memcache extension to the PHP extension folder
cp modules/memcache.so /Applications/MAMP/bin/php5.3/lib/php/extensions/no-debug-non-zts-[yourtimestamp]/
The “[yourtimestamp]” varies per installation, but you should just be able to tab complete that part.