嗨,我有一个数组,其中键作为此格式的日期.
原文链接：https://www.f2er.com/php/138385.html$arr = array(
"20110805" => "2","20100703" => "5","20110413" => "3","20100805" => "4","20100728" => "6","20090416" => "7","20080424" => "8","20110819" => "1",);
我怎么能按键排序这个数组.谢谢.
