PHP生成当前月份包括最近12个月内的月份

1.倒序方法:

            $time=array();
            $currentTime = time();
            $cyear = floor(date("Y",$currentTime));
            $cMonth = floor(date("m",$currentTime));
            for($i=0;$i<12;$i++){
                $nMonth = $cMonth-$i;
                $cyear = $nMonth == 0 ? ($cyear-1) : $cyear;
                $nMonth = $nMonth <= 0 ? 12+$nMonth : $nMonth;
                $time[]['time']=$cyear.$nMonth;
            }

结果:

array(12) {
  [0] => array(1) {
    ["time"] => string(5) "20194"
  }
  [1] => array(1) {
    ["time"] => string(5) "20193"
  }
  [2] => array(1) {
    ["time"] => string(5) "20192"
  }
  [3] => array(1) {
    ["time"] => string(5) "20191"
  }
  [4] => array(1) {
    ["time"] => string(6) "201812"
  }
  [5] => array(1) {
    ["time"] => string(6) "201811"
  }
  [6] => array(1) {
    ["time"] => string(6) "201810"
  }
  [7] => array(1) {
    ["time"] => string(5) "20189"
  }
  [8] => array(1) {
    ["time"] => string(5) "20188"
  }
  [9] => array(1) {
    ["time"] => string(5) "20187"
  }
  [10] => array(1) {
    ["time"] => string(5) "20186"
  }
  [11] => array(1) {
    ["time"] => string(5) "20185"
  }
}

2.顺序方法

  $today = input('param.today') ? input('param.today') : date("Y-m-d");
        $arr = array();
        $old_time = strtotime('-5 month',strtotime($today));
        for($i = 0;$i < 6; ++$i){
            $t = strtotime("+$i month",$old_time);
            $arr[]=date('Y-m',$t);
        }

结果:

Array
(
    [0] => Array
        (
            [time] => 2020-04
        )

    [1] => Array
        (
            [time] => 2020-05
        )

    [2] => Array
        (
            [time] => 2020-06
        )

    [3] => Array
        (
            [time] => 2020-07
        )

    [4] => Array
        (
            [time] => 2020-08
        )

    [5] => Array
        (
            [time] => 2020-09
        )

)