Why CI doesn't use PDO as default?

[eluser]minttux[/eluser]
hi
my question is: if PDO is best (related to this link http://net.tutsplus.com/tutorials/php/pd...d-you-use/ )
why CI doesn't use it as default (Inside active record)?

[eluser]WanWizard[/eluser]
If you mean "inside the MySQL driver", the answer is simple.

CI has to support a large variety of platforms, and even more PHP versions. The PDO drivers have been total crap for a very long time, only since PHP 5.3 they have become usable, and then still only for a limited amount of DB platforms.