PHP 返回近7天 本月 上月日期

 <?php

 /**

  * 返回近7天，本月，上月数据

  * 不计当天（展示后台数据专用）

  */

 function weekMonthLastMonth($search_date = 'week') {

     switch($search_date)

     {

         case 'week' : // 近7天

             $start_date = date ("Y-m-d", strtotime("-7 days"));

             $end_date = date ("Y-m-d", strtotime("-1 days"));

             break;

         case 'month' : // 本月

             $start_date = date ("Y-m-01", strtotime("-1 days"));

             $end_date = date ("Y-m-d", strtotime("-1 days"));

             break;

         case 'last_month' : // 上月

             $search_time = strtotime ("-1 month");

             $start_date = date ("Y-m-01", $search_time);

             $end_date = date ('Y-m-d', strtotime("$start_date +1 month -1 day"));

             break;

     }

     return array($start_date, $end_date);

 }

 echo print_r(weekMonthLastMonth('week'), true);

 echo print_r(weekMonthLastMonth('month'), true);

 echo print_r(weekMonthLastMonth('last_month'), true);