Question

这是使用以下内容的ticketcity.xml文件的示例：

<Events Version="3.0" Method="GetEvents" StatusCode="0" StatusMsg="Success">
    −
    <Event ID="569402" Name="Hair" SeatingChart="http://www.ticketcity.com/images/seatingcharts/MARTINBECK_THEATRE_NYC.GIF" Page="http://www.ticketcity.com/theatre-tickets/broadway-tickets/hair-tickets/hair-tickets-al-hirschfeld-theatre-february-3-200pm.html" EventDateTime="02/03/2010 2:00PM">
    <Performer ID="463" Name="Hair" Primary="true"/>
    −
    <Venue ID="961" Name="Al Hirschfeld Theatre">
    <City ID="36469" Name="New York"/>
    <State ID="34" Abbr="NY" Name="New York"/>
    <Country ID="1" Abbr="US" Name="United States"/>
    </Venue>
    </Event>
    −
</Events>

和获取数据的php脚本：

$ticketcity = new DOMDocument();
$ticketcity->load("ticketcity.xml");
if (empty($ticketcity))
 echo "there was some kind of issue fetching the document";
else { 
echo "xml loaded, beginning update<br>\n";

$events = $ticketcity->getElementsByTagName("Event");

$i=0;
foreach ($events as $event){
 echo $i."<br>\n";
 $eventid = $event->getAttribute('ID');
 $eventname = $event->getAttribute('Name');
 $eventmap = $event->getAttribute('SeatingChart');
 $eventpage = $event->getAttribute('Page');
 echo "$eventid, $eventname, $eventmap, $eventpage<br>\n";
 $i++;
}

我有$ i只是为了调试，所以我有一些打印输出...问题是我什么都没有。除了“xml loaded，begin update
”

之外，我绝对没有任何打印输出

脚本不能更简单，它可以与另一个XML文件一起使用，这个和另一个xml文件的唯一区别是另一个文件的数据存储在节点值中，而不是属性......我我为此疯狂，我错过了什么？

Answer 1

我刚在本地机器上运行它，它运行正常：

<?
$xml = '<Events Version="3.0" Method="GetEvents" StatusCode="0" StatusMsg="Success">
    −
    <Event ID="569402" Name="Hair" SeatingChart="http://www.ticketcity.com/images/seatingcharts/MARTINBECK_THEATRE_NYC.GIF" Page="http://www.ticketcity.com/theatre-tickets/broadway-tickets/hair-tickets/hair-tickets-al-hirschfeld-theatre-february-3-200pm.html" EventDateTime="02/03/2010 2:00PM">
    <Performer ID="463" Name="Hair" Primary="true"/>
    −
    <Venue ID="961" Name="Al Hirschfeld Theatre">
    <City ID="36469" Name="New York"/>
    <State ID="34" Abbr="NY" Name="New York"/>
    <Country ID="1" Abbr="US" Name="United States"/>
    </Venue>
    </Event>
    −
</Events>
';

$ticketcity = new DOMDocument();
$ticketcity->loadXML($xml);
if (empty($ticketcity))
 echo "there was some kind of issue fetching the document";
else { 
    echo "xml loaded, beginning update<br>\n";
    $events = $ticketcity->getElementsByTagName("Event");

    $i=0;
    foreach ($events as $event){
     echo $i."<br>\n";
     $eventid = $event->getAttribute('ID');
     $eventname = $event->getAttribute('Name');
     $eventmap = $event->getAttribute('SeatingChart');
     $eventpage = $event->getAttribute('Page');
     echo "$eventid, $eventname, $eventmap, $eventpage<br>\n";
     $i++;
    }
}

我怀疑该文件丢失了，因为即使DOMDocument无法加载文档，它仍然会触及else子句。 $ ticketcity不会是空的！

Answer 2

你应该尝试这样做：

$ticketcity = new DOMDocument();
if (!$ticketcity->load("ticketcity.xml"))
   echo "there was some kind of issue fetching the document";
else { 
   // your code...
}

$ticketcity将始终包含类DOMDocument的对象，但load在失败时返回false：

成功时返回TRUE，失败时返回FALSE。如果静态调用，则返回DOMDocument并发出E_STRICT警告。

使用php中的dom对象从xml节点获取属性时无法获得任何结果或打印输出

2 个答案: