European charger Canadian iPhone & IPad

If the OP's charging in Europe then no, they won't need an adapter since a European charger would work in European sockets. . If they are charging in Canada with a European charger, then yes, they will need an adapter just to be able to plug it into the Canadian wall socket.

The Chargers can be used with any iPhone for any part of the world.

iOS devices charge by 5volt dc in all of the world, the AC chargers apple make that transfers 110 or 230 AC in all of the world are universal

I'm not completely sure because it depends on the prongs on the charger and I don't know what they are in Canada. This article may provide some light on the subject: About the Apple World Travel Adapter Kit - Apple Support

Rudegar wrote:

iOS devices charge by 5volt dc in all of the world, the AC chargers apple make that transfers 110 or 230 AC in all of the world are universal

Indeed but what about the prongs? Will the OP need the adapter mentioned above?