Using Codeigniter 2 with Doctrine ORM 2 < PHP v5.2

Sorry for my bad English..

I read that the use of Codeigniter 2 with Doctri开发者_StackOverflow社区ne 2 works only in PHP version => 5.3 because of namespaces.

Is there a possibility to operate at a lower version?

Thanks!

No, that is not possible. Doctrine2 has a minimum requirement of PHP 5.3. Porting it to PHP 5.2 would be insane. Also, PHP 5.3 is the only currently supported version of PHP, so I would highly suggest you upgrade.