php数组操作，内容相同，键值不同，互换

$title = array("A"=>"创建时间","C"=>"商品信息","D"=>"商品ID","F"=>"所属店铺","G"=>"商品数","I"=>"订单状态","J"=>"订单类型","M"=>"付款金额","S"=>"效果预估","Y"=>"订单编号","AD"=>"广告位名称");


$fild = array('creatTime'=>'创建时间','orderNumber'=>'订单编号','goodsTitle'=>'商品信息','shopName'=>'所属店铺','goodsNums'=>'商品数','paymentAmount'=>'付款金额','orderStatus'=>'订单状态','orderType'=>'订单类型','groupName'=>'广告位名称','commissionAmount'=>'佣金金额','goodsId'=>'商品ID');//数据库中对应的字段

        foreach ($title as $k=>$v)
        {
            if($key = array_search($v,$fild)){//要获取excel的列值
                $dataFild ["$key"]=$v;
            }
        }

        var_dump($dataFild);

//结果

array(10) {
  ["creatTime"]=>
  string(1) "A"
  ["goodsTitle"]=>
  string(1) "C"
  ["goodsId"]=>
  string(1) "D"
  ["shopName"]=>
  string(1) "F"
  ["goodsNums"]=>
  string(1) "G"
  ["orderStatus"]=>
  string(1) "I"
  ["orderType"]=>
  string(1) "J"
  ["paymentAmount"]=>
  string(1) "M"
  ["orderNumber"]=>
  string(1) "Y"
  ["groupName"]=>
  string(2) "AD"
}

//其实可以通过php内置函数来做,(下面两个函数搭配估计差不多)
//•array_combine — 创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值
//•array_flip — 交换数组中的键和值