向JSON的多个列表添加键

使用 Laravel5.1 ...

我正在尝试转换此JSON:

"[{"John Doe":"john.gmail.com"},{"Frank Smith":"frank@frank.com"},{"Jie Brent":"jie@gmail.com"},{"Jeffrey Manney":"jeff17@gmail.com"}]"

对此:

"[{"name":"John Doe", "email":"john.gmail.com"},{"name":"Frank Smith", "email":"frank@frank.com"},{"name":"Jie Brent", "email":"jie@gmail.com"},{"name":"Jeffrey Manney", "email":"jeff17@gmail.com"}]"

这是我的密码:

$users_storage = [];

foreach($rcf_and_rcfm_users as $key => $user){
   $users_storage[][$key] = $user;
}

$users = json_encode($users_storage);

dd($users);

这个 $rcf_and_rcfm_users