小编fwh*_*who的帖子

数据:

<Relationships>
      <ns2:VariationChild>
        <Identifiers>
          <MarketplaceASIN>
            <MarketplaceId>ATVPDKIKX0DER</MarketplaceId>
            <ASIN>B002KT3XQC</ASIN>
          </MarketplaceASIN>
        </Identifiers>
        <ns2:Color>Black</ns2:Color>
        <ns2:Size>Small</ns2:Size>
      </ns2:VariationChild>
      <ns2:VariationChild>
        <Identifiers>
          <MarketplaceASIN>
            <MarketplaceId>ATVPDKIKX0DER</MarketplaceId>
            <ASIN>B002KT3XQW</ASIN>
          </MarketplaceASIN>
        </Identifiers>
        <ns2:Color>Black</ns2:Color>
        <ns2:Size>Medium</ns2:Size>
      </ns2:VariationChild>
</Relationships>

代码:

$data = simplexml_load_string($response);
foreach($data->GetMatchingProductResult AS $GetMatchingProductResult){
     $Product = $GetMatchingProductResult->Product;
     $Relationships = $Product->Relationships;

     foreach($Relationships->children('ns2', true)->VariationChild AS $VariationChild){

          $Identifiers = $VariationChild->Identifiers;
               $MarketplaceASIN = $Identifiers->MarketplaceASIN;
                    $MarketplaceId = $MarketplaceASIN->MarketplaceId;
                    $ASIN = $MarketplaceASIN->ASIN;

                    echo "$ASIN<br />";

     }
}

这回复了回归,但没有数据,所以它实际上循环遍历XML.但是,我尝试的任何内容都不会实际返回$ ASIN变量中的数据.这是因为命名空间还是simpleXML,还是我完全错过了其他东西？

编辑:尝试过其他方法

foreach($Relationships->children('http://mws.amazonservices.com/schema/Products/2011-10-01/default.xsd', true)->VariationChild AS $VariationChild){

     $Identifiers           = $VariationChild->Identifiers;
          $MarketplaceASIN  = $Identifiers->MarketplaceASIN;
               $MarketplaceId   = $MarketplaceASIN->MarketplaceId;
               $ASIN            = $MarketplaceASIN->ASIN;

               echo "[$ASIN]<br />";

} …

例如,如果我有一个名为sales的表,其值为:

??????????????????
?  ITEM  ? SALES ?
??????????????????
? record ?     4 ?
? cd     ?     2 ?
? cd     ?     5 ?
? record ?     1 ?
??????????????????

如何编写查询以按不同项的总和进行排序,以便我的输出为:

???????????????????????
?  ITEM  ? TOTALSALES ?
???????????????????????
? cd     ?          7 ?
? record ?          5 ?
???????????????????????