“Phineas and Ferb are gonna do it all” on the big screen in the Summer of 2013. Disney has just hired on screenwriter Michael Arndt of “Toy Story 3” fame. Apparently Arndt is going to take the work of show writers Swampy Marsh and Dan Povenmire and tweak it to make it work in a full length feature film. According to an exclusive in the L.A. Times, “Unlike “Toy Story”–and the cable series itself–the “Phineas and Ferb” movie will be a mix of live action and animation.” Mandeville Films, the same company behind “The Muppets” will produce. The Disney Channel hit will make its way into theaters on July 26, 2013.