where like in eloquent laravel code example

Example 1: laravel where like

$users = DB::table('users')
                ->where('name', 'like', 'T%')
                ->get();

Example 2: laravel wherein like

$admin_permissions = Permission::all();
// Teacher Role
$teacher_permissions = $admin_permissions->filter(function ($permission) {
  return substr($permission->title, 0, 8) == 'teacher_';
});