Adding this feature to other existing PDO classes

Hi, thanks for your project, it's nice and useful, I'm currently using this class for PDO:
phpclasses.org/package/6809-PHP-Acc ...

How Can I add your package feature and its functionality to this class for preventing any change in my codes?

Hi behnamy, just replace this string "new PDO" in pdo_database.class.php with "new CPDO".

Thanks again, useful advise.
One more question, I checked your class codes and saw that every cached data is saving in $__cache variable!
So as it is a variable, not being saved in DB or file, the cache terminates and removes at the end of the script every time that script runs and finishes its work! So there wouldn't be any cache for the next time that script runs again.
Isn't better to save the $__cache data in a temporary DB table with memory engine, or in a File?
in this way the cache would last longer!

Hi behnamy,
It depend what you need.
The objective of this class is have query faster and spend less resources.
If you retrieve data from file is slower than retrieve from database.
Another cons is if something is changed on database for example through phpmyadmin some data can be lost if you don't clear the cache.
Maybe i will implement a persistent cache but only if enabled by a flag because not all what a persistent cache of queries.
Thanks for your interest if you have others questions i'm available to respond you.

Is the cached data valid when the record of the DB is UPDATED/DELETED from another script with simultaneous runnig?