获取七天以前到现在的数据：

$days = Input::get('days', 7);

$range = \Carbon\Carbon::now()->subDays($days);

$stats = User::where('created_at', '>=', $range)
 ->groupBy('date')
 ->orderBy('date', 'DESC')
 ->get([
  DB::raw('Date(created_at) as date'),
  DB::raw('COUNT(*) as value')
 ]);

SELECT 
sum(case when `EmailSource`='FM' then 1 else 0 end) as FM_Statistic,
sum(case when `EmailSource`='UOC' then 1 else 0 end) as UOC_Statistic,
sum(case when `EmailSource`='OC' then 1 else 0 end) as OC_Statistic,
DATE_FORMAT(Date,'%Y-%m-%d') AS `DateTime` 
FROM `user_performance` 
WHERE Email != '' AND Email != 'TOTAL'
AND (DATE_FORMAT(Date,'%Y-%m-%d') >= DATE_FORMAT('2011-02-5','%Y-%m-%d')) 
AND (DATE_FORMAT(Date,'%Y-%m-%d') <= DATE_FORMAT('2011-03-07','%Y-%m-%d')) 
GROUP BY `Date`

 public function getNumber()
 {
  $data = [];
  $customers = Customer::all(['id', 'customer_type', 'created_at']);

  #今天数据
  $data['customer_today'] = Customer::where('customer_type', 1)->where('created_at', Carbon::today())->count();
  $data['teacher_today'] = Customer::where('customer_type', 2)->where('created_at', Carbon::today())->count();

  #昨天数据
  $data['customer_yesterday'] = Customer::where('customer_type', 1)->where('created_at', Carbon::yesterday())->count();
  $data['teacher_yesterday'] = Customer::where('customer_type', 2)->where('created_at', Carbon::yesterday())->count();

  $data['today'] = $data['customer_today'] + $data['teacher_today'];
  $data['yesterday'] = $data['customer_yesterday'] + $data['teacher_yesterday'];

  // 本周数据
  $this_week = [Carbon::now()->startOfWeek(), Carbon::now()->endOfWeek()];
  $data['customer_this_week'] = Customer::where('customer_type', 1)->whereBetween('created_at', $this_week)->count();

  $data['teacher_this_week'] = Customer::where('customer_type', 2)->whereBetween('created_at', $this_week)->count();

  // 上周数据
  $last_week = [Carbon::now()->startOfWeek()->subWeek(), Carbon::now()->endOfWeek()->subWeek()];
  $data['customer_last_week'] = Customer::where('customer_type', 1)->whereBetween('created_at', $last_week)->count();

  $data['teacher_last_week'] = Customer::where('customer_type', 2)->whereBetween('created_at', $last_week)->count();

  $data['this_week'] = $data['customer_this_week'] + $data['teacher_this_week'];
  $data['last_week'] = $data['customer_last_week'] + $data['teacher_last_week'];

  // 本月数据
  $data['customer_this_month'] = Customer::where('customer_type', 1)->whereMonth('created_at', Carbon::now()->month)->count();
  $data['teacher_this_month'] = Customer::where('customer_type', 2)->whereMonth('created_at', Carbon::now()->month)->count();

  // 上月数据
  $data['customer_last_month'] = Customer::where('customer_type', 1)->whereMonth('created_at', Carbon::now()->subMonth()->month)->count();
  $data['teacher_last_month'] = Customer::where('customer_type', 2)->whereMonth('created_at', Carbon::now()->subMonth()->month)->count();

  $data['this_month'] = $data['customer_this_month'] + $data['teacher_this_month'];
  $data['last_month'] = $data['customer_last_month'] + $data['teacher_last_month'];

  // 本年数据
  $data['customer_this_year'] = Customer::where('customer_type', 1)->whereYear('created_at', Carbon::now()->year)->count();
  $data['teacher_this_year'] = Customer::where('customer_type', 2)->whereYear('created_at', Carbon::now()->year)->count();

  $data['today_login_users'] = LoginLog::whereDate('created_at', '=', Carbon::today())
   ->groupBy('customer_id')
   ->orderBy('customer_id')
   ->count();

  $data['yesterday_login_users'] = LoginLog::whereDate('created_at', '=', Carbon::yesterday())
   ->groupBy('customer_id')
   ->orderBy('customer_id')
   ->count();

  $data['this_month_login_users'] = LoginLog::whereMonth('created_at', Carbon::now()->month)
   ->groupBy('customer_id')
   ->orderBy('customer_id')
   ->count();

  $data['last_month_login_users'] = LoginLog::whereMonth('created_at', Carbon::now()->subMonth()->month)
   ->groupBy('customer_id')
   ->orderBy('customer_id')
   ->count();

  return $data;
 }