我有一个如下的 XML 结构:
<Tickets>
<EventsPoints>
<Event ID="23">
<PerformanceName>U2</PerformanceName>
<EventDate>25/05/2012</EventDate>
<EventPrice>75.00</EventPrice>
</Event>
<Event ID="27">
<PerformanceName>Jedward</PerformanceName>
<EventDate>28/05/2012</EventDate>
<EventPrice>20.00</EventPrice>
</Event>
<Event ID="27">
<PerformanceName>Rolling Stones</PerformanceName>
<EventDate>03/12/2012</EventDate>
<EventPrice>80.00</EventPrice>
</Event>
</EventsPoints>
</Tickets>
基本上我想在这个 XML 中搜索某个表演名称,比如“U2”,然后返回整个 XML 块(即表演名称、事件日期和价格 - 全部采用格式化的 XML 并保存在单独的 xml 文件中)
这是我的 php 代码,但它似乎没有正确提取数据:
$srcDom = new DOMDocument;
$srcDom->load('/var/www/html/xml/searchfile.xml');
$xPath = new DOMXPath($srcDom);
foreach ($srcDom->getElementsByTagName('Event') as $event) {
$dstDom = new DOMDocument('1.0', 'utf-8');
$dstDom->appendChild($dstDom->createElement('EventsPricePoints'));
$dstDom->documentElement->appendChild($dstDom->importNode($event, true));
$allEventsForVenue = $xPath->query(
sprintf(
'/Tickets/EventsPoints/Event/PerformanceName[.="U2"]'
)
);
foreach ($allEventsForVenue as $event) {
$dstDom->documentElement->appendChild($dstDom->importNode($event, true));
}
$dstDom->formatOutput = true;
$dstDom->save(sprintf('/var/www/html/xml/searchresults1.xml'));
}