Need to rebuild memcache module with same build number as php

Question

I'm running OSX 10.6 with php 5.2.13 and memcache 2.2.6. Build numbers as shown below. How do I get them to match though? Here's the error I get when php tries to load the memcache module:

$ php -m

PHP Warning: PHP Startup: memcache: Unable to initialize module

Module compiled with module API=20090626, debug=0, thread-safety=0

PHP compiled with module API=20060613, debug=0, thread-safety=0

These options need to match

Any ideas on how to have these match?