Get the timestamp of each time period, last month, current month, last week, current week, last day, today

/**
* Get the start and end timestamp of the time period
* @param string $timetype time type yesmonth-last month nowmonth-this month yesday-last day nowday-today yesweek-last week nowweek-last week
*/
function getFLtime($timetype){
   switch ($timetype){
       case 'yesmonth':
           //计算上一月
           $first = date('Y-m-d H:i:s', mktime(0, 0, 0, date('m') - 1, 1, date('Y')));
           $last = date('Y-m-d 23:59:59', strtotime("$first 1 month -1 day"));
           break;
       case 'nowmonth':
           $date = date("Y-m-d");
           // 本月第一天
           $first = date('Y-m-01 0:0:0', strtotime($date));
           // 本月最后一天
           $last = date('Y-m-d 23:59:59', strtotime("$first 1 month -1 day"));
           break;
       case 'yesday':
           $first = date('Y-m-d 0:0:0',time()-3600*24);
           $last = date('Y-m-d 23:59:59',strtotime($first));
           break;
       case 'nowday':
           $first = date('Y-m-d 0:0:0',time());
           $last = date('Y-m-d 23:59:59',strtotime($first));
           break;
       case 'yesweek':
           $timestamp = time();
           $first = date('Y-m-d H:i:s', strtotime("last week Monday", $timestamp));
           $last = date('Y-m-d H:i:s', (strtotime(date('Y-m-d', strtotime("last week Sunday", $timestamp))) 24 * 3600 - 1));
           break;
       case 'nowweek':
           $timestamp = time();
           $first = date('Y-m-d H:i:s', strtotime("this week Monday", $timestamp));
           $last = date('Y-m-d H:i:s', (strtotime(date('Y-m-d H:i:s', strtotime("this week Sunday", $timestamp))) 24 * 3600 - 1));
           break;
       default:
           return false;
           break;
   }
   return ['start'=>strtotime($first),'end'=>strtotime($last)];
}

?>

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