Question

How could PHP’s PDO feature and the DAO pattern be mixed? Should I have an abstract class that initializes a connection to the database? Can PDO be considered as equivalent to Java’s JDBC?

Answer 1

How could PHP’s PDO feature and the DAO pattern be mixed?

Just use pdo to make queries into your dao object.

class PersonDAO {

   function get($id) {
     //> EXECUTE HERE PDO
   }

}

Also PDO already abstracts the connection, so you don’t need an abstract class for connection.