2012-09-12 61 views
0

嗨我正在尝试获取具有特定内容或值的所有节点的计数。在这种情况下,我有一个XML像这样:在php和xml中获取包含特定值的xml节点的数量

<hotel> 
<city>Cancun</city> 
<postalCode>77500</postalCode> 
<countryCode>MX</countryCode> 
<airportCode>CUN</airportCode> 
<supplierType>E</supplierType> 
<propertyCategory>1</propertyCategory> 
<hotelRating>4.0</hotelRating> 
<confidenceRating>52</confidenceRating> 
</hotel> 

我需要找到与4的值的所有hotelRating并计算有多少在我的XML列表。我不知道如何用php做到这一点。如果有人能帮助我,我会非常感激!

顺便说一下,我已经连接了如下的XML文件,并能够获取数据和发送数据。

$post_string= 'type=xml&cid=222&minorRev=14&apiKey=222&locale='.$userLocale.'&currencyCode='.$userCurr.'&customerIpAddress='.$userIp.'&customerUserAgent='.$userAgent.'&xml=<HotelListRequest><destinationId>'.$destinationId.'</destinationId><arrivalDate>'.$arriving.'</arrivalDate><departureDate>'.$departing.'</departureDate><RoomGroup>'.$xmlQuery.'</RoomGroup><supplierCacheTolerance>MED_ENHANCED</supplierCacheTolerance></HotelListRequest> '; 
//Relative path to the file with $_POST parsing 
$path = "http://api.ean.com/ean-services/rs/hotel/v3/list"; 
$ch = curl_init($path); 
$fp = fopen('xml/data.xml','w'); 
//Send the data to the file 
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/xml')); 
curl_setopt($ch, CURLOPT_HEADER, 0); 
curl_setopt($ch, CURLOPT_FILE, $fp); 
$val = curl_exec($ch); 
curl_close($ch);//Close curl session 
fclose($fp); //Close file overwrite 
$data = simplexml_load_file('xml/data.xml'); 
} 

非常感谢您的帮助!

回答

0
foreach ($data->hotel as $hotel) 
{ 
    if ($hotel->hotelRating == '4.0') 
    { 
     // hotel with 4.0 rating found 
    } 
} 
0
$count = $data->xpath("count(\"//hotel[hotelRating= '4.0']\")"); 

会给你的酒店,其中hotelrating = 4.0的计数。