【问题标题】:Getting number of xml nodes containing certain value in php and xml在 php 和 xml 中获取包含特定值的 xml 节点数
【发布时间】:2012-09-04 23:35:24
【问题描述】:

您好,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:

<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>

我需要找到所有值为 4 的 hotelRating 并计算我的 xml 列表中有多少个。我不知道如何用 php 做到这一点。如果有人能帮我解决这个问题,我将不胜感激!

顺便说一下,我已经将xml文件连接如下,并且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');
}

提前感谢您的帮助!!!

【问题讨论】:

    标签: php xml count nodes


    【解决方案1】:
    foreach ($data->hotel as $hotel)
    {
        if ($hotel->hotelRating == '4.0')
        {
            //  hotel with 4.0 rating found
        }
    }
    

    【讨论】:

      【解决方案2】:
      $count = $data->xpath("count(\"//hotel[hotelRating= '4.0']\")");
      

      将为您提供hotelrating = 4.0 的酒店数量。

      【讨论】:

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