whereor in laravel code example

Example 1: laravel orWhere

$camps = $field->camps()->where('status', 0)->where(function ($q) {
    $q->where('sex', Auth::user()->sex)->orWhere('sex', 0);
})->get();

Example 2: laravel where

$users = DB::table('users')
                ->whereMonth('created_at', '12')
                ->get();

Example 3: laravel where

$users = DB::table('users')
                ->whereDate('created_at', '2016-12-31')
                ->get();