PHP Programming

Installing Memcache on MAMP

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 1: Install XCode

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

cd ~
tar -zxvf memcache-2.2.5.tgz
cd memcache-2.2.5

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/ /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.

By Jack Slingerland

Founder of Working and living in Raleigh, NC. I manage a team of software engineers and work in Python, Django, TypeScript, Node.js, React+Redux, Angular, and PHP. I enjoy hanging out with my wife and son, lifting weights, and advancing in my free time.

7 replies on “Installing Memcache on MAMP”

As an update to Jack’s great tutorial on installing memcache, when I followed his instructions, everything was compiling and configured successfully, but for the life of me, I could not get MAMP to see the module. I had a suspicion that the file was compiled for 32-bit or 64-bit and MAMP wasn’t loading the extension correctly.

if you run into this problem, in Step 5, replace the ./configure line with:

CFLAGS=’-O3 -fno-common -arch i386 -arch x86_64 -g -Os’ LDFLAGS=’-O3 -arch i386 -arch x86_64′ CXXFLAGS=’-O3 -fno-common -arch i386 -arch x86_64 -g -Os’ ./configure –disable-dependancy-tracking –disable-shared -enable-static

… Then continue on with the steps and memcache will install against MAMP Pro / PHP 5.3 successfully.


Thanks for the brilliant tut! I’ve followed it exactly but I get the following error when starting MAMP.

PHP Warning: PHP Startup: memcache: Unable to initialize module
Module compiled with module API=20100525
PHP compiled with module API=20121212
These options need to match
in Unknown on line 0

I am running MAMP Pro v3 with PHP 5.5.10. Any ideas?

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