suryee-stat/application/index/model/MonthPicker.php

<?php
namespace app\index\model;
/**
 * 获取请选择月份列表
 */
class MonthPicker
{
    public $init_month = "2020-01";

    public $cur_month;

    public $monarr = [];

    public function __construct()
    {
        $time1 = strtotime($this->init_month); // 自动为00:00:00 时分秒 两个时间之间的年和月份  
        $time2 = time(); // 当前时间
        $this->monarr[] = date('Y-m', $time1); // 当前月;
        while (($time1 = strtotime('+1 month', $time1)) <= $time2) {
            $this->monarr[] = date('Y-m', $time1); // 取得递增月;
        }
        $this->cur_month =  date('Y-m', strtotime('-1 month', $time2));
    }
}