//統計七天內注冊用戶數量按天進行分組
$user = DB::table('users')->whereBetween('created_at',['2018-01-01','2018-01-07'])
 ->selectRaw('date(created_at) as date,count(*) as value')
 ->groupBy('date')->get();

#獲取的用戶分組數據
{
 "date": "2018-01-01", #日期
 "value": 199  #數量
{
 "date": "2018-01-02",
 "value": 298
},
{
 "date": "2018-01-03",
 "value": 1000
}
 
#在進行圖表統計的時候直接從數據庫取得數據有些日期可能是沒有的,就需要我們手動進行補全一些日期
#計算日期內天數
$stimestamp = strtotime($start_time);
$etimestamp = strtotime($end_time);
#計算日期段內有多少天
$days = ($etimestamp - $stimestamp) / 86400;
#保存每天日期
$date = array();
for($i = 0;$i  $days;$i++){
 $date[] = date('Y-m-d', $stimestamp + (86400 * $i));
}
#循環補全日期
foreach ($date as $key => $val){
 $data[$key] = [
 'date' => $val,
 'value' => 0
 ];
 foreach ($user as $item => $value){
 if($val == $value['date']){
  $data[$key] = $value;
 }
 }
}
return $data;

#統計一年內注冊用戶數量按月份進行分組
$user = DB::table('users')->whereBetween('created_at',['2018-01-01','2018-12-31'])
 ->selectRaw('DATE_FORMAT(created_at,"%Y-%m") as date,COUNT(*) as value')
 ->groupBy('date')->get();
#獲取的用戶分組數據
{
 "date": "2018-01", #月份
 "value": 1497  #數量
},
{
 "date": "2018-02",
 "value": 2354
},
{
 "date": "2018-03",
 "value": 4560
} 
#在進行圖表統計的時候直接從數據庫取得的數據有的月份可能是沒有的,不過月份比較少可直接寫死,同樣也需要補全
$year = date('Y',time());
#一年的月份
$month = [
 0 => $year.'-01',
 1 => $year.'-02',
 2 => $year.'-03',
 3 => $year.'-04',
 4 => $year.'-05',
 5 => $year.'-06',
 6 => $year.'-07',
 7 => $year.'-08',
 8 => $year.'-09',
 9 => $year.'-10',
 10 => $year.'-11',
 11 => $year.'-12',
];
#循環補全月份
foreach ($month as $key => $val){
 $data[$key] = [
 'date' => $val,
 'value' => 0
 ];
 foreach ($user as $item => $value){
 if($val == $value['date']){
  $data[$key] = $value;
 }
 }
}
return $data;

use Carbon\Carbon;
 
public function getNumber()
{
  $data = [];

  #今天數據
  $data['customer_today'] = Customer::where('customer_type', 1)->where('created_at', Carbon::today())->count();
  #昨天數據
  $data['customer_yesterday'] = Customer::where('customer_type', 1)->where('created_at', Carbon::yesterday())->count();

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

  // 上周數據
  $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();

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

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

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

  
  return $data;
}