php，SimpleXML，while循環

我想從eBay api獲取一些信息並將其存儲在數據庫中。我用簡單的XML來提取信息，但我有一個小問題，因爲某些項目的信息不顯示。如果我打印到simple_xml，我可以很清楚地看到這些信息是由eBay api提供的。我php，SimpleXML，while循環

$items = "220617293997,250645537939,230485306218,110537213815,180519294810"; 
$number_of_items = count(explode(",", $items)); 
$xml = $baseClass->getContent("http://open.api.ebay.com/shopping?callname=GetMultipleItems&responseencoding=XML&appid=Morcovar-c74b-47c0-954f-463afb69a4b3&siteid=0&version=525&IncludeSelector=ItemSpecifics&ItemID=$items"); 
writeDoc($xml, "api.xml"); 
//echo $xml; 
$getvalues = simplexml_load_file('api.xml'); 
// print_r($getvalue); 
$number = "0"; 

while($number < 6) { 
    $item_number = $getvalues->Item[$number]->ItemID; 
    $location = $getvalues->Item[$number]->Location; 
    $title = $getvalues->Item[$number]->Title; 
    $price = $getvalues->Item[$number]->ConvertedCurrentPrice; 
    $manufacturer = $getvalues->Item[$number]->ItemSpecifics->NameValueList[3]->Value; 
    $model = $getvalues->Item[$number]->ItemSpecifics->NameValueList[4]->Value; 
    $mileage = $getvalues->Item[$number]->ItemSpecifics->NameValueList[5]->Value; 

    echo "item number = $item_number <br>localtion = $location<br>". 
     "title = $title<br>price = $price<br>manufacturer = $manufacturer". 
     "<br>model = $model<br>mileage = $mileage<br>"; 
    $number++; 

}

上面的代碼返回

 
item number = 
localtion = 
title = 
price = 
manufacturer = 
model = 
mileage = 
item number = 230485306218 
localtion = Coventry, Warwickshire 
title = 2001 LAND ROVER RANGE ROVER VOGUE AUTO GREEN 
price = 3635.07 
manufacturer = Land Rover 
model = Range Rover 
mileage = 76000 
item number = 220617293997 
localtion = Crawley, West Sussex 
title = 2004 CITROEN C5 HDI LX RED 
price = 3115.77 
manufacturer = Citroen 
model = C5 
mileage = 76000 
item number = 180519294810 
localtion = London, London 
title = 2000 VOLKSWAGEN POLO 1.4 SILVER 16V NEED GEAR BOX 
price = 905.06 
manufacturer = Right-hand drive 
model = 
mileage = Standard Car 
item number = 
localtion = 
title = 
price = 
manufacturer = 
model = 
mileage =

正如你所看到的信息是不是幾個項目檢索...如果我更換$號人工如「$ = ITEM_NUMBER $ getvalues->第[4] - >的ItemID;」適用於任何數量。

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2010-06-17 Michael

我認爲你的錯誤是將$number初始化爲一個字符串。通過$number = 0;替換$number = "0";以獲得第一項輸入。

至於最後一個 - 也許XML結果中只有5個條目？

來源

2010-06-17 23:03:39

非常感謝！我已將您的答案標記爲「已接受」。如果您不介意，請讓我知道一個「穩定」的解決方案來獲得製造商，型號和里程數？ ebay API在樹中顯示這些信息作爲名稱和值，但有時數組號會不同，因爲某些項具有更多「特定」。請看這裏的一個xml文檔的例子http://pastebin.com/NrvUdg8F 和簡單的XML的打印是http://pastebin.com/hY40YrWV – Michael 2010-06-17 23:28:57

@Michael你可能不得不通過使用' foreach'看看你正在尋找的財產是否在那裏。 – 2010-06-17 23:35:58

再次感謝Pekka！你讓我今天一整天都感覺很好！ – Michael 2010-06-17 23:40:38

嘗試迭代項目列表，而不是在while循環中對限制進行硬編碼。

$items = "220617293997,250645537939,230485306218,110537213815,180519294810"; 
$xml = file_get_contents("http://open.api.ebay.com/shopping?callname=GetMultipleItems&responseencoding=XML&appid=Morcovar-c74b-47c0-954f-463afb69a4b3&siteid=0&version=525&IncludeSelector=ItemSpecifics&ItemID=$items"); 
$sxml = simplexml_load_string($xml); 


foreach ($sxml->Item as $item) { 
    $out = array(); 
    $out[] = 'Item Number:'. $item->ItemID; 
    $out[] = 'Location: '. $item->Location; 
    $out[] = 'Title: '. $item->Title; 
    $out[] = 'Price: '. $item->ConvertedCurrentPrice; 
    $out[] = 'Manufacturer: '. $item->ItemSpecifics->NameValueList[3]->Value; 
    $out[] = 'Model: '. $item->ItemSpecifics->NameValueList[4]->Value; 
    $out[] = 'Mileage: '. $item->ItemSpecifics->NameValueList[5]->Value; 

    echo implode('<br />', $out) . '<hr>'; 
}

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2010-06-17 23:11:31 cam8001

php，SimpleXML，while循環

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