I have used Zend_Db and I found it very good, but why do some books and documentations advocate using Doctrine 2 over Zend_Db ? I am not an expert in ORM, but is there some functionality that Zend_Db can do and Doctrine ORM can't?
Which is more secure?
Experts who use both: which one do you advice me to use?
Is there any book for Doctrine 2?