Heim > Artikel > Backend-Entwicklung > 多个foreach嵌套循环的问题
$xml = simplexml_load_file($xml_uri);$offer_url=array( "ItemCondition" =>"Qualifiers->ItemCondition", "ItemSubcondition" =>"Qualifiers->ItemSubcondition", "FulfillmentChannel" =>"Qualifiers->FulfillmentChannel", "ShipsDomestically" =>"Qualifiers->ShipsDomestically", "ShippingTime" =>"Qualifiers->ShippingTime->Max", "SellerPositiveFeedbackRating" =>"Qualifiers->SellerPositiveFeedbackRating", "NumberOfOfferListingsConsidered"=>"NumberOfOfferListingsConsidered", "SellerFeedbackCount" =>"SellerFeedbackCount", "LandedPrice" =>"Price->LandedPrice->Amount", "ListingPrice" =>"Price->ListingPrice->Amount", "Shipping" =>"Price->Shipping->Amount", "MultipleOffersAtLowestPrice" =>"MultipleOffersAtLowestPrice"); foreach($xml->GetLowestOfferListingsForASINResult->Product->LowestOfferListings->LowestOfferListing as $key){ foreach($offer_url as $name=>$value){ echo $name."->".$key->$value."--------"; } echo "<br>"; } } ?>
$key->$value没有结果,请问应该怎么写??
$name."->".$key->$value
这样组装的是串,不是语句,不能被执行
你需要适当的使用 eval 或 create_function 将其当做语句来执行
以下结果也是为空
echo eval("\$key->\$value;");
请问语法有问题吗?
echo eval("return \$key->$value;");