/*年月+1算法 By Terry*/
function yearMonthAddOne($yearMonth){
$year = substr($yearMonth,0,4);
$month = substr($yearMonth,4);
if($month!=12){
$month = $month+1;
}else{
$year = $year+1;
$month = 1;
}
$month = $month<10?('0'.$month):$month;
return $year.$month;
}
if(!function_exists('get_year_months_by_time_period')){
function get_year_months_by_time_period($start_time,$end_time='',$sort='asc'){
$return = array();
$startYearMonth = date('Ym',strtotime($start_time));
$endYearMonth = $end_time?date('Ym',strtotime($end_time)):date('Ym');
$yearMonth = $startYearMonth;
$return[] = $yearMonth;
while ($yearMonth<$endYearMonth){
$yearMonth = yearMonthAddOne($yearMonth);
$return[] = $yearMonth;
}
if($sort=='desc'){
$return = array_reverse($return);
}
return $return;
}
}
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