12

これが何度も尋ねられたことは知っていますが、自分の状況で機能するための提案を得ることができず、ウェブとここを検索し、すべてを試してみましたが、何も機能しませんでした. この XML を名前空間 cap: で解析するだけで済み、そこから 4 つのエントリが必要です。

<?xml version="1.0" encoding="UTF-8"?>
<entry>
    <id>http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFB832F0.SpecialWeatherStatement.124EFFB84164TX.LUBSPSLUB.ac20a1425c958f66dc159baea2f9e672</id>
    <updated>2013-05-06T20:08:00-05:00</updated>
    <published>2013-05-06T20:08:00-05:00</published>
    <author>
        <name>w-nws.webmaster@noaa.gov</name>
    </author>
    <title>Special Weather Statement issued May 06 at 8:08PM CDT by NWS</title>
    <link href="http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFB832F0.SpecialWeatherStatement.124EFFB84164TX.LUBSPSLUB.ac20a1425c958f66dc159baea2f9e672"/>
    <summary>...SIGNIFICANT WEATHER ADVISORY FOR COCHRAN AND BAILEY COUNTIES... AT 808 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 30 MILES NORTHWEST OF MORTON...MOVING SOUTHEAST AT 25 MPH. NICKEL SIZE HAIL...WINDS SPEEDS UP TO 40 MPH...CONTINUOUS CLOUD TO GROUND LIGHTNING...AND BRIEF MODERATE DOWNPOURS ARE POSSIBLE WITH</summary>
    <cap:event>Special Weather Statement</cap:event>
    <cap:effective>2013-05-06T20:08:00-05:00</cap:effective>
    <cap:expires>2013-05-06T20:45:00-05:00</cap:expires>
    <cap:status>Actual</cap:status>
    <cap:msgType>Alert</cap:msgType>
    <cap:category>Met</cap:category>

    <cap:urgency>Expected</cap:urgency>
    <cap:severity>Minor</cap:severity>
    <cap:certainty>Observed</cap:certainty>
    <cap:areaDesc>Bailey; Cochran</cap:areaDesc>
    <cap:polygon>34.19,-103.04 34.19,-103.03 33.98,-102.61 33.71,-102.61 33.63,-102.75 33.64,-103.05 34.19,-103.04</cap:polygon>
    <cap:geocode>
        <valueName>FIPS6</valueName>
        <value>048017 048079</value>
        <valueName>UGC</valueName>

        <value>TXZ027 TXZ033</value>
    </cap:geocode>
    <cap:parameter>
        <valueName>VTEC</valueName>
        <value>
        </value>
    </cap:parameter>
</entry>

私は simpleXML を使用しており、小さな単純なテスト スクリプトをセットアップしており、通常の要素の解析に最適です。名前空間を使用して要素を解析する方法を見つけたり、取得したりすることはできません。

これは、私が使用しているコードを含む小さなサンプル テスト スクリプトで、単純な要素の解析に最適です。これを使用して名前空間を解析するにはどうすればよいですか? 私が試したことはすべてうまくいきません。変数を作成してスタイルのために HTML に埋め込むことができるようにするために必要です。

<?php 

$html = "";  

// Get the XML Feed
$data = "http://alerts.weather.gov/cap/tx.php?x=1";


// load the xml into the object
$xml = simplexml_load_file($data);

for ($i = 0; $i < 10; $i++){
    $title = $xml->entry[$i]->title;
    $summary = $xml->entry[$i]->summary;

    $html .= "<p><strong>$title</strong></p><p>$summary</p><hr/>";

}

 echo $html; 
?> 

これは通常の要素の解析には問題なく機能しますが、エントリの親の下に cap: 名前空間があるものについてはどうでしょうか?

<?php
ini_set('display_errors','1');

$html = "";
$data = "http://alerts.weather.gov/cap/tx.php?x=1";
$entries = simplexml_load_file($data);
if(count($entries)):
    //Registering NameSpace
    $entries->registerXPathNamespace('prefix', 'http://www.w3.org/2005/Atom');
    $result = $entries->xpath("//prefix:entry");
    //echo count($asin);
    //echo "<pre>";print_r($asin);
    foreach ($result as $entry):
        $title = $entry->title;
        $summary = $entry->summary;

        $html .= "<p><strong>$title</strong></p><p>$summary</p>$event<hr/>";

    endforeach;
endif;

echo $html;

?>

どんな助けでも大歓迎です。

-ありがとう

4

2 に答える 2

20

私はここで同じタイプの答えを出しました - あなたの質問に対する解決策

Namespace を登録するだけで、 simplexml_load_file と XPath を正常に操作できます。

<?php
$data = "http://alerts.weather.gov/cap/tx.php?x=1";
$entries = file_get_contents($data);
$entries = new SimpleXmlElement($entries);
if(count($entries)):
    //echo "<pre>";print_r($entries);die;
    //alternate way other than registring NameSpace
    //$asin = $asins->xpath("//*[local-name() = 'ASIN']");

    $entries->registerXPathNamespace('prefix', 'http://www.w3.org/2005/Atom');
    $result = $entries->xpath("//prefix:entry");
    //echo count($asin);
    //echo "<pre>";print_r($result);die;
    foreach ($result as $entry):
        //echo "<pre>";print_r($entry);die;
        $dc = $entry->children('urn:oasis:names:tc:emergency:cap:1.1');
        echo $dc->event."<br/>";
        echo $dc->effective."<br/>";
        echo "<hr>";
    endforeach;
endif;

それでおしまい。

于 2013-05-07T05:57:21.843 に答える
5

別の解決策は次のとおりです。

<?php
$xml = <<<XML
<?xml version = '1.0' encoding = 'UTF-8' standalone = 'yes'?>
<?xml-stylesheet href='http://alerts.weather.gov/cap/capatom.xsl' type='text/xsl'?>

<!--
This atom/xml feed is an index to active advisories, watches and warnings 
issued by the National Weather Service.  This index file is not the complete 
Common Alerting Protocol (CAP) alert message.  To obtain the complete CAP 
alert, please follow the links for each entry in this index.  Also note the 
CAP message uses a style sheet to convey the information in a human readable 
format.  Please view the source of the CAP message to see the complete data 
set.  Not all information in the CAP message is contained in this index of 
active alerts.
-->

<feed
    xmlns = 'http://www.w3.org/2005/Atom'
    xmlns:cap = 'urn:oasis:names:tc:emergency:cap:1.1'
    xmlns:ha = 'http://www.alerting.net/namespace/index_1.0'
    >
<!-- http-date = Tue, 07 May 2013 04:14:00 GMT -->

<id>http://alerts.weather.gov/cap/tx.atom</id>
<logo>http://alerts.weather.gov/images/xml_logo.gif</logo>
<generator>NWS CAP Server</generator>
<updated>2013-05-06T23:14:00-05:00</updated>
<author>
    <name>w-nws.webmaster@noaa.gov</name>
</author>
<title>Current Watches, Warnings and Advisories for Texas Issued by the National Weather Service</title>
<link href='http://alerts.weather.gov/cap/tx.atom'/>

<entry>
    <id>http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFB8AA78.FireWeatherWatch.124EFFD70270TX.EPZRFWEPZ.1716207877d94d15d43d410892b9f175</id>
    <updated>2013-05-06T23:14:00-05:00</updated>
    <published>2013-05-06T23:14:00-05:00</published>
    <author>
        <name>w-nws.webmaster@noaa.gov</name>
    </author>
    <title>Fire Weather Watch issued May 06 at 11:14PM CDT until May 08 at 10:00PM CDT by NWS</title>
    <link href="http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFB8AA78.FireWeatherWatch.124EFFD70270TX.EPZRFWEPZ.1716207877d94d15d43d410892b9f175"/>
    <summary>...CRITICAL FIRE CONDITIONS EXPECTED WEDNESDAY ACROSS FAR WEST TEXAS AND THE SOUTHWEST NEW MEXICO LOWLANDS... .WINDS ALOFT WILL STRENGTHEN OVER THE REGION EARLY THIS WEEK...AHEAD OF AN UPPER LEVEL TROUGH FORECAST TO MOVE THROUGH NEW MEXICO AND TEXAS ON WEDNESDAY. SURFACE LOW PRESSURE WILL ALSO DEVELOP TO OUR EAST AS THE TROUGH APPROACHES. THIS COMBINATION WILL RESULT</summary>
    <cap:event>Fire Weather Watch</cap:event>
    <cap:effective>2013-05-06T23:14:00-05:00</cap:effective>
    <cap:expires>2013-05-08T22:00:00-05:00</cap:expires>
    <cap:status>Actual</cap:status>
    <cap:msgType>Alert</cap:msgType>
    <cap:category>Met</cap:category>
    <cap:urgency>Future</cap:urgency>
    <cap:severity>Moderate</cap:severity>
    <cap:certainty>Possible</cap:certainty>
    <cap:areaDesc>El Paso; Hudspeth</cap:areaDesc>
    <cap:polygon></cap:polygon>
    <cap:geocode>
        <valueName>FIPS6</valueName>
        <value>048141 048229</value>
        <valueName>UGC</valueName>
        <value>TXZ055 TXZ056</value>
    </cap:geocode>
    <cap:parameter>
        <valueName>VTEC</valueName>
        <value>/O.NEW.KEPZ.FW.A.0018.130508T1900Z-130509T0300Z/</value>
    </cap:parameter>
</entry>

<entry>
    <id>http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFABB2F0.AirQualityAlert.124EFFC750DCTX.HGXAQAHGX.7f2cf548a67d403f0541492b2804d621</id>
    <updated>2013-05-06T14:16:00-05:00</updated>
    <published>2013-05-06T14:16:00-05:00</published>
    <author>
        <name>w-nws.webmaster@noaa.gov</name>
    </author>
    <title>Air Quality Alert issued May 06 at 2:16PM CDT by NWS</title>
    <link href="http://alerts.weather.gov/cap/wwacapget.php?x=TX124EFFABB2F0.AirQualityAlert.124EFFC750DCTX.HGXAQAHGX.7f2cf548a67d403f0541492b2804d621"/>
    <summary>...OZONE ACTION DAY FOR TUESDAY... THE TEXAS COMMISSION ON ENVIRONMENTAL QUALITY (TCEQ)...HAS ISSUED AN OZONE ACTION DAY FOR THE HOUSTON...GALVESTON...AND BRAZORIA AREAS FOR TUESDAY...MAY 7 2013. ATMOSPHERIC CONDITIONS ARE EXPECTED TO BE FAVORABLE FOR PRODUCING HIGH LEVELS OF OZONE POLLUTION IN THE HOUSTON...GALVESTON AND</summary>
    <cap:event>Air Quality Alert</cap:event>
    <cap:effective>2013-05-06T14:16:00-05:00</cap:effective>
    <cap:expires>2013-05-07T19:15:00-05:00</cap:expires>
    <cap:status>Actual</cap:status>
    <cap:msgType>Alert</cap:msgType>
    <cap:category>Met</cap:category>
    <cap:urgency>Unknown</cap:urgency>
    <cap:severity>Unknown</cap:severity>
    <cap:certainty>Unknown</cap:certainty>
    <cap:areaDesc>Brazoria; Galveston; Harris</cap:areaDesc>
    <cap:polygon></cap:polygon>
    <cap:geocode>
        <valueName>FIPS6</valueName>
        <value>048039 048167 048201</value>
        <valueName>UGC</valueName>
        <value>TXZ213 TXZ237 TXZ238</value>
    </cap:geocode>
    <cap:parameter>
        <valueName>VTEC</valueName>
        <value></value>
    </cap:parameter>
</entry>
</feed>
XML;

$sxe       = new SimpleXMLElement($xml);
$capFields = $sxe->entry->children('cap', true);

echo "Event: " . (string) $capFields->event . "\n";
echo "Effective: " . (string) $capFields->effective . "\n";
echo "Expires: " . (string) $capFields->expires . "\n";
echo "Severity: " . (string) $capFields->severity . "\n";

出力:

Event: Fire Weather Watch
Effective: 2013-05-06T23:14:00-05:00
Expires: 2013-05-08T22:00:00-05:00
Severity: Moderate
于 2013-05-07T08:36:33.230 に答える