Turck MMCache is a PHP Accelerator, Optimizer, Encoder and Dynamic Content Cache. It increases performance of PHP scripts by caching them in compiled state, so that the overhead of compiling is almost completely eliminated. Also it uses some optimizations for speed up of PHP scripts execution. Turck MMCache typically reduces server load and increases the speed of your PHP code by 1-10 times. It has been tested with PHP 4.1.0 - 4.3.2 under Linux and Windows with Apache 1.3 and 2.0.
Optimization of $GLOBALS for ZE2 was implemented. Comparsion with zero optimization pattern was improved. "mmcache.shm_only" configuration directive was added to disable caching of scripts on disk. It has no effect on session and content caching. Bug with get_parent_class() and is_subclass_of() was fixed.