使用Foreach更改Rest Api的值

I'm using rottentomatoes API and Would like to change the title to uppercase but it works just a few Movies not for all,

foreach ($movies as $v) {

    $name = strtoupper($v->name);

}

the $movies has an json code like

   { 
  "id": 770672122, 
     "name": "Toy Story 3",
   }

I have a list of 43 items and just change the name for the first 5 items and not for all what happen with the rest? there a way to understand why thing is happend? How can I change the value for all data? Thanks