Turck MMCache is a opcode cache for PHP. 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 - 4.3.1 under Linux and Windows with Apache 1.3 and 2.0.
Disk caching for files those can't fit in shared memory was implemented. Bug with "include_dir" directive was fixed. Some new optimizations were implemented.