MMCache is a good open source code, with a good cache effect, a good module for a high-quality website. Official website: http://sourceforge.net/projects/turck-mmcache
AdoDB is a very good multi-database connection class (Class) that supports a variety of popular databases (systems). Official website: http://adodb.sourceforge.net/. Plus its AdoDB Extension for PHP, get a quick access to the database.
After upgrading to PHP5, compile your own AdoDB, MMCache module, then restart the web server, you will find: First, memory overflow, apache2 error; second, running the PHP program containing the AdoDB call Access, memory or overflow, and cause Apache2 restart. Such a program has not been run at all.
Remove the MMCache module and everything is normal. This shows that the MMCache module and PHP5 have a big problem. In fact, you are using the PHP4 series, the latest version of MMCache has the same memory overflow problem, especially the first phenomenon mentioned above: Although it is "normal" to run, it is always an error.
Unfortunately, the MMCache module disappeared from my practical application. Mmcache developed very much DSTOGOV very much. He has went to work to PHP Zend, and SOAP in PHP5 is his masterpiece.