我似乎无法想出这个.我有以下
XML文件：
<?xml version="1.0" encoding="UTF-8"?>
<targets>
<showcases>
<building name="Big Blue" />
<building name="Shiny Red" />
<building name="Mellow Yellow" />
</showcases>
</targets>
我需要能够测试是否< building>节点以给定名称存在.我似乎在Google上找到的所有内容都告诉我要执行以下操作：
$xdoc->getElementsByTagName('building')->item(0)->getAttributeNode('name')
…但如果我理解正确,那不是只测试第一个< building>节点？项目(0)？我需要使用XQuery吗？
我很感激一些帮助！谢谢！
我建议如下(PHP使用ext / simplexml和XPath)：
$name = 'Shiny Red';
$xml = simplexml_load_string('<?xml version="1.0" encoding="UTF-8"?>
<targets>
<showcases>
<building name="Big Blue" />
<building name="Shiny Red" />
<building name="Mellow Yellow" />
</showcases>
</targets>');
$nodes = $xml->xpath(sprintf('/targets/showcases/building[@name="%s"]',$name);
if (!empty($nodes)) {
printf('At least one building named "%s" found',$name);
} else {
printf('No building named "%s" found',$name);
}
