php模仿arsort方法

//定义数组$arr = array();$arr['a'] = '111111';$arr['e'] = '222222';$arr['c'] = '333333';$arry = exchange($arr);var_dump($arry);//数组倒序排列function exchange($arr){$arrn = array();$arrnk = array();$n = count($arr);foreach($arr as $k => $v){$arrn[] = $v;$arrnk[] = $k;}$arry = array();for($i = $n;$i>0;$i--){$arry[$arrnk[$i-1]] = $arrn[$i-1];}return $arry;}