How to get the last day of a month in php

This article mainly introduces the method of PHP to obtain the maximum number of days (last day) of a certain month, involving phpprocess control and related techniques of mathematical operations. It has certain reference value. Value, friends who need it can refer to

The example in this article describes the method of getting the maximum number of days (last day) of a certain month in PHP. Share it with everyone for your reference. The details are as follows:

//获取 某个月的最大天数（最后一天）
function getMonthLastDay($month, $year) {
 switch ($month) {
  case 4 :
  case 6 :
  case 9 :
  case 11 :
   $days = 30;
   break;
  case 2 :
   if ($year % 4 == 0) {
    if ($year % 100 == 0) {
     $days = $year % 400 == 0 ? 29 : 28;
    } else {
     $days = 29;
    }
   } else {
    $days = 28;
   }
   break;
  default :
   $days = 31;
   break;
 }
 return $days;
}

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