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/**     * @param $month     * @return string     * 指定年月份获取月初月末的时间戳     */    public function getTime($month)    {        $month_start = strtotime($month);//指定年月份月初时间戳        $BeginDate = date('Y-m-01', strtotime($month));        $EndDate = date('Y-m-d', strtotime("$BeginDate +1 month -1 day"));        $month_end = strtotime("next day", strtotime($EndDate)) - 1;//指定年月份月末时间戳        $months = $month_start . ' and ' . $month_end;        return $months;    }

获取从2017-01到现在所有的月份

$start_time = "2017-01";        $strtotime_start_time = strtotime($start_time);        $lastMonth = strtotime(date("Y-m", time()));        $monthArr = [];        for ($i = 1; $lastMonth > $strtotime_start_time; $i++) {            $lastMonths =  strtotime(date('Y-m') . '-01 00:00:01');            $t = "-". $i ." month";            $lastMonths = date('Y-m', strtotime($t, $lastMonths));            var_dump(strtotime($lastMonths));            array_push($monthArr, $lastMonths);            $lastMonth = strtotime($lastMonths);        }

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