laravel -查询近7月走势图案例

// 获取7月前的时间
$time = date('Y-m',strtotime("-0 year -7 month -0 day" ));
$where['created_at'] = ['>', $time];

// 统计近7月数据
$trend = DB::table('service_orders')
    ->select(DB::raw('CONCAT(YEAR(created_at),"-",MONTH(created_at)) as day'), DB::raw('sum(pay_price) as price'))
    ->wheres($where)
    ->groupBy('day')
    ->get()
    ->map(function ($value) {
        return (array)$value;
    })->toArray();

// 查询近7月的所有年月份
$day = 7 ;
for ($i = $day - 1; 0 <= $i; $i--) {
    $result[] = date('Y-n', strtotime('-' . $i . ' month'));
    $nums[] = 0;
}

// 匹配数据并返回
array_walk($trend, function ($value, $key) use ($result, &$nums) {
    $index = array_search($value['day'],$result);
    $nums[$index] = $value['price'];
});

$year = $result;
// 处理返回的时间格式
foreach ($year as &$v) {
    $v = date('n', strtotime($v)) . '月';
}

// 返回7月走势数据
$list['trend'] = [
    'month' => $year,
    'price' => $nums,
    'year' => $result,
];

// 返回数据
returnJson($list);

// 走势图