$timeKey = array_column($term_date,'issue_timestamp');//取出數組中issue_timestamp的一列,返回一維數組
array_multisort($timeKey,SORT_DESC,$term_date);//排序,根據$timeKey 排序
$term_date_new = array_slice($term_date,0,8);//取值
$timeKey = array_column($term_date,'issue_timestamp');//取出數組中issue_timestamp的一列,返回一維數組
array_multisort($timeKey,SORT_DESC,$term_date);//排序,根據$timeKey 排序
$term_date_new = array_slice($term_date,0,8);//取值