PHP Laravel 按周从数据库获取数据

Question

你好，我有这个代码

  // Get all the days date of past month for performance report
    $start_date = date("Y-m", strtotime("previous month")) ."-01";
    $start_time = strtotime($start_date);

    $end_time_1 = strtotime("+1 week", $start_time);

    for($i=$start_time; $i<$end_time_1; $i+=86400)
    {
    $list1[] = date('D, d F Y', $i);
    }

    $end_time_2 = strtotime("+1 week", $end_time_1);

    for($i=$end_time_1; $i<$end_time_2; $i+=86400)
    {
    $list2[] = date('D, d F Y', $i);
    }

    $end_time_3 = strtotime("+1 week", $end_time_2);

    for($i=$end_time_2; $i<$end_time_3; $i+=86400)
    {
    $list3[] = date('D, d F Y', $i);
    }

    $end_time_4 = strtotime("+1 week", $end_time_3);

    for($i=$end_time_3; $i<$end_time_4; $i+=86400)
    {
    $list4[] = date('D, d F Y', $i);
    }

    $performance_week_1 = \DB::table('accounts')
    ->whereBetween('created_at', [$start_date, $end_time_1]) // get week 1
    ->get();
    $performance_week_2 = \DB::table('accounts')
    ->whereBetween('created_at', [$end_time_1, $end_time_2]) // get week 2
    ->get();
    $performance_week_3 = \DB::table('accounts')
    ->whereBetween('created_at', [$end_time_2, $end_time_3]) // get week 3
    ->get();
    $performance_week_4 = \DB::table('accounts')
    ->whereBetween('created_at', [$end_time_3, $end_time_4]) // get week 4
    ->get();

它的作用是获取过去一个月的所有日期

问题是end_time_1返回

1549584000

我希望它返回 $start_time 返回的内容，但从本月开始+ 1 周

2019-02-08

这个想法是从上个月开始每周从数据库获取一些数据并将其发布到表中 非常感谢

Answer 1

您可以使用ADDDATE() mysql 函数，例如:

SELECT ADDDATE("2019-02-08", INTERVAL 7 DAY);

这将在日期上添加 7 天，这也可以是列的日期

PS。你应该使用 laravel 的 DB:raw() 函数来实现此目的